Sample records for teaching image processing

  1. Image Processing for Teaching.

    ERIC Educational Resources Information Center

    Greenberg, R.; And Others

    1993-01-01

    The Image Processing for Teaching project provides a powerful medium to excite students about science and mathematics, especially children from minority groups and others whose needs have not been met by traditional teaching. Using professional-quality software on microcomputers, students explore a variety of scientific data sets, including…

  2. Teaching image processing and pattern recognition with the Intel OpenCV library

    Microsoft Academic Search

    Adam Kozlowski; Aleksandra Królak

    2009-01-01

    In this paper we present an approach to teaching image processing and pattern recognition with the use of the OpenCV library. Image processing, pattern recognition and computer vision are important branches of science and apply to tasks ranging from critical, involving medical diagnostics, to everyday tasks including art and entertainment purposes. It is therefore crucial to provide students of image

  3. Enhancing the Teaching of Digital Processing of Remote Sensing Image Course through Geospatial Web Processing Services

    NASA Astrophysics Data System (ADS)

    di, L.; Deng, M.

    2010-12-01

    Remote sensing (RS) is an essential method to collect data for Earth science research. Huge amount of remote sensing data, most of them in the image form, have been acquired. Almost all geography departments in the world offer courses in digital processing of remote sensing images. Such courses place emphasis on how to digitally process large amount of multi-source images for solving real world problems. However, due to the diversity and complexity of RS images and the shortcomings of current data and processing infrastructure, obstacles for effectively teaching such courses still remain. The major obstacles include 1) difficulties in finding, accessing, integrating and using massive RS images by students and educators, and 2) inadequate processing functions and computing facilities for students to freely explore the massive data. Recent development in geospatial Web processing service systems, which make massive data, computing powers, and processing capabilities to average Internet users anywhere in the world, promises the removal of the obstacles. The GeoBrain system developed by CSISS is an example of such systems. All functions available in GRASS Open Source GIS have been implemented as Web services in GeoBrain. Petabytes of remote sensing images in NASA data centers, the USGS Landsat data archive, and NOAA CLASS are accessible transparently and processable through GeoBrain. The GeoBrain system is operated on a high performance cluster server with large disk storage and fast Internet connection. All GeoBrain capabilities can be accessed by any Internet-connected Web browser. Dozens of universities have used GeoBrain as an ideal platform to support data-intensive remote sensing education. This presentation gives a specific example of using GeoBrain geoprocessing services to enhance the teaching of GGS 588, Digital Remote Sensing taught at the Department of Geography and Geoinformation Science, George Mason University. The course uses the textbook "Introductory Digital Image Processing, A Remote Sensing Perspective" authored by John Jensen. The textbook is widely adopted in the geography departments around the world for training students on digital processing of remote sensing images. In the traditional teaching setting for the course, the instructor prepares a set of sample remote sensing images to be used for the course. Commercial desktop remote sensing software, such as ERDAS, is used for students to do the lab exercises. The students have to do the excurses in the lab and can only use the simple images. For this specific course at GMU, we developed GeoBrain-based lab excurses for the course. With GeoBrain, students now can explore petabytes of remote sensing images in the NASA, NOAA, and USGS data archives instead of dealing only with sample images. Students have a much more powerful computing facility available for their lab excurses. They can explore the data and do the excurses any time at any place they want as long as they can access the Internet through the Web Browser. The feedbacks from students are all very positive about the learning experience on the digital image processing with the help of GeoBrain web processing services. The teaching/lab materials and GeoBrain services are freely available to anyone at http://www.laits.gmu.edu.

  4. The teaching of computer programming and digital image processing in radiography.

    PubMed

    Allan, G L; Zylinski, J

    1998-06-01

    The increased use of digital processing techniques in Medical Radiations imaging modalities, along with the rapid advance in information technology has resulted in a significant change in the delivery of radiographic teaching programs. This paper details a methodology used to concurrently educate radiographers in both computer programming and image processing. The students learn to program in visual basic applications (VBA), and the programming skills are contextualised by requiring the students to write a digital subtraction angiography (DSA) package. Program code generation and image presentation interface is undertaken by the spreadsheet Microsoft Excel. The user-friendly nature of this common interface enables all students to readily begin program creation. The teaching of programming and image processing skills by this method may be readily generalised to other vocational fields where digital image manipulation is a professional requirement. PMID:9726504

  5. A Visualization Toolkit for Teaching, Learning and Experimentation in Image Processing

    Microsoft Academic Search

    Eugene Ageenko; Gaetano La Russa

    2005-01-01

    Due to their intrinsic and abstract difficulties, image processing (IP) courses are in general of graduate and postgraduate level. For efficient IP teaching, a special focus needs be set on students' experimental works. The scope is to allow students to concretize and try out the studied technology. Visualization tools for IP's basic aspects are also needed by teachers that desire

  6. Teaching image processing and pattern recognition with the Intel OpenCV library

    NASA Astrophysics Data System (ADS)

    Koz?owski, Adam; Królak, Aleksandra

    2009-06-01

    In this paper we present an approach to teaching image processing and pattern recognition with the use of the OpenCV library. Image processing, pattern recognition and computer vision are important branches of science and apply to tasks ranging from critical, involving medical diagnostics, to everyday tasks including art and entertainment purposes. It is therefore crucial to provide students of image processing and pattern recognition with the most up-to-date solutions available. In the Institute of Electronics at the Technical University of Lodz we facilitate the teaching process in this subject with the OpenCV library, which is an open-source set of classes, functions and procedures that can be used in programming efficient and innovative algorithms for various purposes. The topics of student projects completed with the help of the OpenCV library range from automatic correction of image quality parameters or creation of panoramic images from video to pedestrian tracking in surveillance camera video sequences or head-movement-based mouse cursor control for the motorically impaired.

  7. Enhancing the Teaching of Digital Processing of Remote Sensing Image Course through Geospatial Web Processing Services

    Microsoft Academic Search

    L. di; M. Deng

    2010-01-01

    Remote sensing (RS) is an essential method to collect data for Earth science research. Huge amount of remote sensing data, most of them in the image form, have been acquired. Almost all geography departments in the world offer courses in digital processing of remote sensing images. Such courses place emphasis on how to digitally process large amount of multi-source images

  8. Signals and Images Image processing

    E-print Network

    Lakey, Joseph D.

    Signals and Images Wavelets Image processing Models and Approximations Data driven approximations;Signals and Images Wavelets Image processing Models and Approximations Data driven approximations or transcendental: Joe Lakey Wavelets Minimize Max #12;Signals and Images Wavelets Image processing Models

  9. Images of Teaching.

    ERIC Educational Resources Information Center

    Hargrove, Kathy

    2003-01-01

    This article explores different teaching styles, including instructional managers (who focus on orchestrating sets of activities for groups and individuals), caring persons (who are more deeply concerned about how the work of the classroom contributes to the students' growth as individuals), or generous experts (who act as mentors). (Contains 1…

  10. Image Processing

    NASA Technical Reports Server (NTRS)

    1993-01-01

    Electronic Imagery, Inc.'s ImageScale Plus software, developed through a Small Business Innovation Research (SBIR) contract with Kennedy Space Flight Center for use on space shuttle Orbiter in 1991, enables astronauts to conduct image processing, prepare electronic still camera images in orbit, display them and downlink images to ground based scientists for evaluation. Electronic Imagery, Inc.'s ImageCount, a spin-off product of ImageScale Plus, is used to count trees in Florida orange groves. Other applications include x-ray and MRI imagery, textile designs and special effects for movies. As of 1/28/98, company could not be located, therefore contact/product information is no longer valid.

  11. Teaching image-processing concepts in junior high school: boys’ and girls’ achievements and attitudes towards technology

    Microsoft Academic Search

    Moshe Barak; Khaled Asad

    2012-01-01

    Background: This research focused on the development, implementation and evaluation of a course on image-processing principles aimed at middle-school students.Purpose: The overarching purpose of the study was that of integrating the learning of subjects in science, technology, engineering and mathematics (STEM), and linking the learning of these subjects to the children’s world and to the digital culture characterizing society today.Sample:

  12. Image Visualization Medical Image Processing

    E-print Network

    Wu, Xiaolin

    Image Visualization ENG4BF3 Medical Image Processing #12;2 Visualization Methods · Visualization of medical images is for the determination of the quantitative information about the properties of anatomic types) #12;3 Two-dimensional Image Generation and Visualization · The utility of 2D images depends

  13. Image Processing Applications: An Overview

    PubMed Central

    Greberman, Melvyn

    1984-01-01

    Improved methods of image display, transmission, enhancement, and archiving are of increasing importance to medical scientists and practitioners. The dynamic range of computed tomographic imaging fostered widespread interest among radiologists with respect to the clinical contributions of other digital imaging modalities. The application of digital imaging techniques in pathology also promises to show continued growth because of the high image content of that specialty. Newer methods of image display offer improved three dimensional visualization of anatomic structures; such techniques will find increasing use in teaching anatomy and in surgical planning. The papers at this session will present new applications of image processing techniques. The similarity of issues in image processing across medical specialty boundaries is stressed.

  14. Digital Imaging and Image Processing

    NSDL National Science Digital Library

    Leske, Cavin.

    2002-01-01

    The first site is an excellent introduction to digital imaging from the Eastman Kodak Company (1). There are five lessons with review questions and competency exams, covering fundamentals, image capture, and processing. A more technical introduction is found at the Digital Imaging Glossary (2). This educational resource has several short articles about compression algorithms and specific imaging techniques. The Hypermedia Image Processing Reference (3) goes into the theory of image processing. It describes operations involving image arithmetic, blending multiple images, and feature detectors, to name a few; and several of the sections have illustrative Java applets. The Center for Imaging Science at John Hopkins University (4) offers two chapters from a book on "metric pattern theory." A brief overview of the material is provided on the main page, and the chapters can be viewed on or offline with special plug-ins given on the Web site. The Journal of Electronic Imaging (5) is a quarterly publication with many papers on current research. The final issue of 2002 has a special section on Internet imaging that is quite interesting. A research project at the University of Washington (6) focuses on the role of mathematics in image processing. Besides a thorough description of the project, there is free software and documentation given on the Web site. Philips Research (7) is working on a product that seems like something from a science fiction movie. Three dimensional television and the technologies that make it possible are described on the site. Related to this is a November 2002 news article discussing holograms and 3-D video displays (8). The devices are being studied by the Spatial Imaging Group at the Massachusetts Institute of Technology Media Lab.

  15. Multispectral imaging and image processing

    NASA Astrophysics Data System (ADS)

    Klein, Julie

    2014-02-01

    The color accuracy of conventional RGB cameras is not sufficient for many color-critical applications. One of these applications, namely the measurement of color defects in yarns, is why Prof. Til Aach and the Institute of Image Processing and Computer Vision (RWTH Aachen University, Germany) started off with multispectral imaging. The first acquisition device was a camera using a monochrome sensor and seven bandpass color filters positioned sequentially in front of it. The camera allowed sampling the visible wavelength range more accurately and reconstructing the spectra for each acquired image position. An overview will be given over several optical and imaging aspects of the multispectral camera that have been investigated. For instance, optical aberrations caused by filters and camera lens deteriorate the quality of captured multispectral images. The different aberrations were analyzed thoroughly and compensated based on models for the optical elements and the imaging chain by utilizing image processing. With this compensation, geometrical distortions disappear and sharpness is enhanced, without reducing the color accuracy of multispectral images. Strong foundations in multispectral imaging were laid and a fruitful cooperation was initiated with Prof. Bernhard Hill. Current research topics like stereo multispectral imaging and goniometric multispectral measure- ments that are further explored with his expertise will also be presented in this work.

  16. Virtual Image Processing

    NASA Astrophysics Data System (ADS)

    Mulgaonkar, Ranjit

    1988-12-01

    Many imaging applications require high speed acquisition, storage, processing and display of large size images (over 10k X 10k pixels). Such applications include remote sensing, medical imaging, electron microscopy, publishing and document/photograph processing. Most existing image processors and special purpose acquisition devices have limitations on the image size being acquired (usually 4096 X 4096 pixels). Storage of these large images, sometimes with multiple bands takes a lot of storage space. The available storage devices that have large storage capacity cannot keep up with the transfer speed requirements. The ideal storage device should provide both high storage capacity and high transfer speeds. Processing these large images requires a large amount of Random Access Memory (RAM), and the image has to be broken into smaller sections (sub-images). The processed image is usually rebuilt from the subimages, resulting in visible boundaries between the subimages. Even though devices that display images of up to 2048 X 2048 in size are available today, they still display only a small portion of a large image at a time. In order to display the entire image, the display window has to be roamed in the image data base. In this paper we will discuss a system architecture suitable for processing such large images. This system performs acquisition, storage, display and processing of large image databases.

  17. Art Images for College Teaching (AICT)

    NSDL National Science Digital Library

    Allan T. Kohl of the Minneapolis College of Art and Design presents Art Images for College Teaching (AICT), "a royalty-free image exchange resource for the educational community." AICT images may be downloaded, and making derivative copies is permitted, as long as the images will be used for educational or personal purposes, not commercial. AICT on the Web consists of selections from a more extensive image collection on CD, arranged in five broad chronological sections: Ancient, Medieval Era, Renaissance & Baroque, 18th - 20th Century, and Non-Western cultures. AICT is still in development; for example, the 18th - 20th Century section currently contains several messages informing users "there is nothing here." Educational institutions and individuals who find this too limiting can rent entire image CDs. Already, AICT includes a great many of the images necessary for teaching art history courses. One helpful feature is a concordance to about a dozen standard art history textbooks, allowing users to cross-reference AICT images to these books.

  18. Hyperspectral image processing

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Hyperspectral image processing refers to the use of computer algorithms to extract, store and manipulate both spatial and spectral information contained in hyperspectral images across the visible and near-infrared portion of the electromagnetic spectrum. A typical hyperspectral image processing work...

  19. Retinex Image Processing

    NSDL National Science Digital Library

    Retinex Image Processing technology, developed by NASA, is used to compensate for the effect of poor lighting in recorded images. Shadows, changes in the color of illumination, and several other factors can cause image quality to be highly variable. Using an advanced system that sharpens images and efficiently renders colors, a much more constant image quality can be achieved regardless of the lighting. Retinex technology is described in several online publications that can be downloaded from this Web site. Additionally, some example pictures of scenes taken with and without the image processing are shown.

  20. Image processing mini manual

    NASA Technical Reports Server (NTRS)

    Matthews, Christine G.; Posenau, Mary-Anne; Leonard, Desiree M.; Avis, Elizabeth L.; Debure, Kelly R.; Stacy, Kathryn; Vonofenheim, Bill

    1992-01-01

    The intent is to provide an introduction to the image processing capabilities available at the Langley Research Center (LaRC) Central Scientific Computing Complex (CSCC). Various image processing software components are described. Information is given concerning the use of these components in the Data Visualization and Animation Laboratory at LaRC.

  1. Apple Image Processing Educator

    NASA Technical Reports Server (NTRS)

    Gunther, F. J.

    1981-01-01

    A software system design is proposed and demonstrated with pilot-project software. The system permits the Apple II microcomputer to be used for personalized computer-assisted instruction in the digital image processing of LANDSAT images. The programs provide data input, menu selection, graphic and hard-copy displays, and both general and detailed instructions. The pilot-project results are considered to be successful indicators of the capabilities and limits of microcomputers for digital image processing education.

  2. 2.4. IMAGE PROCESSING Umesh Rajashekar & Alan C. Bovik

    E-print Network

    Rajashekar, Umesh

    2.4. IMAGE PROCESSING EDUCATION Umesh Rajashekar & Alan C. Bovik The University of Texas at Austin, The Netherlands 1 #12;Contents 1 Introduction 1 2 IP-LAB: A tool for teaching image-processing programming in Java), Switzerland 2 2.1 Digital Image Processing Education (SMT, SIN, EDNE) at the Swiss Federal Institute

  3. Teaching evolutionary processes to skeptical students

    NASA Astrophysics Data System (ADS)

    Bobrowsky, Matthew

    2000-12-01

    This article draws on current information from scientific and educational sources to provide an extremely useful summary of problems and solutions when teaching about evolutionary processes in physics and astronomy. The article addresses the process of science as described in position statements from professional organizations and actual experiences of instructors in the classroom as described at an AAS panel discussion.

  4. Teaching, Communication, and Book Choice Processes

    ERIC Educational Resources Information Center

    Ryan, Dana Marie

    2013-01-01

    Allowing students to select their own books for independent reading has been linked to increased reading engagement, heightened motivation to read, and greater independence and efficacy in reading. However, there has been little exploration of the processes surrounding book choice in elementary classrooms, particularly teaching practices that…

  5. Teaching and Learning: A Collaborative Process.

    ERIC Educational Resources Information Center

    Goldberg, Merryl R.

    1990-01-01

    Explains the teaching-research method of instruction that employs the teacher and students as collaborative partners in the learning process. States that students attain knowledge through assimilating experiences in ways that are most meaningful for them. Case studies are included. (GG)

  6. Teaching Academic Essay Writing: Accelerating the Process.

    ERIC Educational Resources Information Center

    Medina, Suzanne L.

    This paper describes a simple instructional approach which social science professors can use to teach the fundamentals of academic essay writing to their students. The paper discusses the evolution of this alternative writing approach--the instructional problems leading to its development as well as the process by which a solution was identified.…

  7. BAOlab: Image processing program

    NASA Astrophysics Data System (ADS)

    Larsen, Søren S.

    2014-03-01

    BAOlab is an image processing package written in C that should run on nearly any UNIX system with just the standard C libraries. It reads and writes images in standard FITS format; 16- and 32-bit integer as well as 32-bit floating-point formats are supported. Multi-extension FITS files are currently not supported. Among its tools are ishape for size measurements of compact sources, mksynth for generating synthetic images consisting of a background signal including Poisson noise and a number of pointlike sources, imconvol for convolving two images (a “source” and a “kernel”) with each other using fast fourier transforms (FFTs) and storing the output as a new image, and kfit2d for fitting a two-dimensional King model to an image.

  8. Image processing benchmark study

    NASA Astrophysics Data System (ADS)

    Miller, John W. V.; Eddy, C.; Waltz, Frederick M.; Hack, Ralf; Wood, James; Stokes, D.

    1998-10-01

    This paper describes the benchmarking of image processing algorithms using high-performance workstations and personal desktop computers. For the various platforms evaluated which included machines from Sun, SGI, Apple, and Gateway, compiler options were varied to obtain the fastest execution times. Algorithms evaluated included typical image processing operations such as derivatives, logical operations, morphology, subtraction, median filter, and the new SKIPSM approach. Data were collected using the different platforms and are presented here in tabular form. The results indicate that the latest generation of personal computers have processing capabilities that are similar to UNIX-based work stations.

  9. Discrete Wavelets and Image Processing Discrete Wavelets and Image Processing

    E-print Network

    Knaust, Helmut

    Discrete Wavelets and Image Processing Discrete Wavelets and Image Processing Helmut Knaust@utep.edu October 16, 2009 #12;Discrete Wavelets and Image Processing Math 5311: Applied Mathematics Course and Image Processing Math 5311: Applied Mathematics Prerequisites Prerequisites: A thorough understanding

  10. Processing Of Binary Images

    NASA Astrophysics Data System (ADS)

    Hou, H. S.

    1985-07-01

    An overview of the recent progress in the area of digital processing of binary images in the context of document processing is presented here. The topics covered include input scan, adaptive thresholding, halftoning, scaling and resolution conversion, data compression, character recognition, electronic mail, digital typography, and output scan. Emphasis has been placed on illustrating the basic principles rather than descriptions of a particular system. Recent technology advances and research in this field are also mentioned.

  11. Image-Processing Program

    NASA Technical Reports Server (NTRS)

    Roth, D. J.; Hull, D. R.

    1994-01-01

    IMAGEP manipulates digital image data to effect various processing, analysis, and enhancement functions. It is keyboard-driven program organized into nine subroutines. Within subroutines are sub-subroutines also selected via keyboard. Algorithm has possible scientific, industrial, and biomedical applications in study of flows in materials, analysis of steels and ores, and pathology, respectively.

  12. Image processing and reconstruction

    SciTech Connect

    Chartrand, Rick [Los Alamos National Laboratory

    2012-06-15

    This talk will examine some mathematical methods for image processing and the solution of underdetermined, linear inverse problems. The talk will have a tutorial flavor, mostly accessible to undergraduates, while still presenting research results. The primary approach is the use of optimization problems. We will find that relaxing the usual assumption of convexity will give us much better results.

  13. Design of smart imagers with image processing

    Microsoft Academic Search

    Evgeniya N. Serova; Yury A. Shiryaev; Anton O. Udovichenko

    2005-01-01

    This paper is devoted to creation of novel CMOS APS imagers with focal plane parallel image preprocessing for smart technical vision and electro-optical systems based on neural implementation. Using analysis of main biological vision features, the desired artificial vision characteristics are defined. Image processing tasks can be implemented by smart focal plane preprocessing CMOS imagers with neural networks are determined.

  14. The Process of Innovation in University Teaching.

    ERIC Educational Resources Information Center

    Brew, Angela

    1982-01-01

    Argues that teaching innovation in the university is influenced by teacher attitudes and the existence of satisfactory teaching materials. Teaching packages from the Open University in England are described. (JJD)

  15. Introduction to computer image processing

    NASA Technical Reports Server (NTRS)

    Moik, J. G.

    1973-01-01

    Theoretical backgrounds and digital techniques for a class of image processing problems are presented. Image formation in the context of linear system theory, image evaluation, noise characteristics, mathematical operations on image and their implementation are discussed. Various techniques for image restoration and image enhancement are presented. Methods for object extraction and the problem of pictorial pattern recognition and classification are discussed.

  16. scikit-image: image processing in Python

    PubMed Central

    Schönberger, Johannes L.; Nunez-Iglesias, Juan; Boulogne, François; Warner, Joshua D.; Yager, Neil; Gouillart, Emmanuelle; Yu, Tony

    2014-01-01

    scikit-image is an image processing library that implements algorithms and utilities for use in research, education and industry applications. It is released under the liberal Modified BSD open source license, provides a well-documented API in the Python programming language, and is developed by an active, international team of collaborators. In this paper we highlight the advantages of open source to achieve the goals of the scikit-image library, and we showcase several real-world image processing applications that use scikit-image. More information can be found on the project homepage, http://scikit-image.org. PMID:25024921

  17. Computer image processing and recognition

    NASA Technical Reports Server (NTRS)

    Hall, E. L.

    1979-01-01

    A systematic introduction to the concepts and techniques of computer image processing and recognition is presented. Consideration is given to such topics as image formation and perception; computer representation of images; image enhancement and restoration; reconstruction from projections; digital television, encoding, and data compression; scene understanding; scene matching and recognition; and processing techniques for linear systems.

  18. Session 0575 Suggestions for Teaching the Engineering Research Process

    E-print Network

    Minnesota, University of

    Session 0575 Suggestions for Teaching the Engineering Research Process David J. Lilja University, engineering degree programs should make a concerted effort to teach students how to become good researchers with several specific techniques to help teach the basic skills necessary for performing good engineering

  19. Image processing in precision agriculture

    Microsoft Academic Search

    Dragoljub Pokrajac; A. Lazarevic; S. Vucetic; T. Fiez; Z. Obradovic

    1999-01-01

    A brief review of our signal and image processing application in precision agriculture is presented. A method for determining sampling frequency for agriculture data is proposed, and some initial results based on data simulation and image processing are reported

  20. Polynomial Image Algebra Approach For Image Processing

    NASA Astrophysics Data System (ADS)

    Bhattacharya, Prabir; Qian, Kai

    1989-11-01

    This paper describes a polynomial approach to the representation of binary and gray images for machine vision. We show that most of the stan-dard image processing can be done by the template polynomial operations. Further, we also develop some operators which rely on the instrinsic properties of polynomials and can be done at a considerable advantage using the polynomial representation of images.

  1. Image processing and recognition for biological images

    PubMed Central

    Uchida, Seiichi

    2013-01-01

    This paper reviews image processing and pattern recognition techniques, which will be useful to analyze bioimages. Although this paper does not provide their technical details, it will be possible to grasp their main tasks and typical tools to handle the tasks. Image processing is a large research area to improve the visibility of an input image and acquire some valuable information from it. As the main tasks of image processing, this paper introduces gray-level transformation, binarization, image filtering, image segmentation, visual object tracking, optical flow and image registration. Image pattern recognition is the technique to classify an input image into one of the predefined classes and also has a large research area. This paper overviews its two main modules, that is, feature extraction module and classification module. Throughout the paper, it will be emphasized that bioimage is a very difficult target for even state-of-the-art image processing and pattern recognition techniques due to noises, deformations, etc. This paper is expected to be one tutorial guide to bridge biology and image processing researchers for their further collaboration to tackle such a difficult target. PMID:23560739

  2. Teaching People and Machines to Enhance Images

    NASA Astrophysics Data System (ADS)

    Berthouzoz, Floraine Sara Martianne

    Procedural tasks such as following a recipe or editing an image are very common. They require a person to execute a sequence of operations (e.g. chop onions, or sharpen the image) in order to achieve the goal of the task. People commonly use step-by-step tutorials to learn these tasks. We focus on software tutorials, more specifically photo manipulation tutorials, and present a set of tools and techniques to help people learn, compare and automate photo manipulation procedures. We describe three different systems that are each designed to help with a different stage in acquiring procedural knowledge. Today, people primarily rely on hand-crafted tutorials in books and on websites to learn photo manipulation procedures. However, putting together a high quality step-by-step tutorial is a time-consuming process. As a consequence, many online tutorials are poorly designed which can lead to confusion and slow down the learning process. We present a demonstration-based system for automatically generating succinct step-by-step visual tutorials of photo manipulations. An author first demonstrates the manipulation using an instrumented version of GIMP (GNU Image Manipulation Program) that records all changes in interface and application state. From the example recording, our system automatically generates tutorials that illustrate the manipulation using images, text, and annotations. It leverages automated image labeling (recognition of facial features and outdoor scene structures in our implementation) to generate more precise text descriptions of many of the steps in the tutorials. A user study finds that our tutorials are effective for learning the steps of a procedure; users are 20-44% faster and make 60-95% fewer errors when using our tutorials than when using screencapture video tutorials or hand-designed tutorials. We also demonstrate a new interface that allows learners to navigate, explore and compare large collections (i.e. thousands) of photo manipulation tutorials based on their command-level structure. Sites such as tutorialized.com or good-tutorials.com collect tens of thousands of photo manipulation tutorials. These collections typically contain many different tutorials for the same task. For example, there are many different tutorials that describe how to recolor the hair of a person in an image. Learners often want to compare these tutorials to understand the different ways a task can be done. They may also want to identify common strategies that are used across tutorials for a variety of tasks. However, the large number of tutorials in these collections and their inconsistent formats can make it difficult for users to systematically explore and compare them. Current tutorial collections do not exploit the underlying command-level structure of tutorials, and to explore the collection users have to either page through long lists of tutorial titles or perform keyword searches on the natural language tutorial text. We present a new browsing interface to help learners navigate, explore and compare collections of photo manipulation tutorials based on their command-level structure. Our browser indexes tutorials by their commands, identifies common strategies within the tutorial collection, and highlights the similarities and differences between sets of tutorials that execute the same task. User feedback suggests that our interface is easy to understand and use, and that users find command-level browsing to be useful for exploring large tutorial collections. They strongly preferred to explore tutorial collections with our browser over keyword search. Finally, we present a framework for generating content-adaptive macros (programs) that can transfer complex photo manipulation procedures to new target images. After learners master a photo manipulation procedure, they often repeatedly apply it to multiple images. For example, they might routinely apply the same vignetting effect to all their photographs. This process can be very tedious especially for procedures that involve many steps. While image manipulation programs pro

  3. Guest Editorial Color image processing

    E-print Network

    Plataniotis, Konstantinos N.

    Guest Editorial Color image processing 1. Background and motivation The perception of color and recognize objects of interest, and convey information. Color image processing and anal- ysis deal with the manipulation of digital color images through the utilization of signal processing techniques. Like most

  4. Image Processing Diagnostics: Emphysema

    NASA Astrophysics Data System (ADS)

    McKenzie, Alex

    2009-10-01

    Currently the computerized tomography (CT) scan can detect emphysema sooner than traditional x-rays, but other tests are required to measure more accurately the amount of affected lung. CT scan images show clearly if a patient has emphysema, but is unable by visual scan alone, to quantify the degree of the disease, as it appears merely as subtle, barely distinct, dark spots on the lung. Our goal is to create a software plug-in to interface with existing open source medical imaging software, to automate the process of accurately diagnosing and determining emphysema severity levels in patients. This will be accomplished by performing a number of statistical calculations using data taken from CT scan images of several patients representing a wide range of severity of the disease. These analyses include an examination of the deviation from a normal distribution curve to determine skewness, a commonly used statistical parameter. Our preliminary results show that this method of assessment appears to be more accurate and robust than currently utilized methods which involve looking at percentages of radiodensities in air passages of the lung.

  5. Process-Product Research on Teaching: Ten Years Later.

    ERIC Educational Resources Information Center

    Garrison, James W.; Macmillan, C. J. B.

    1994-01-01

    The essay discusses Nathaniel Gage's research on teaching and looks at Gage and Needels' (1989) response to critics of process-product research on teaching. A review of three related issues examines the inability of process-product research to deal with intentionality, the atheoretical posture of process-product research, and normative issues. (SM)

  6. Teaching Image Computation: From Computer Graphics to Computer Vision

    E-print Network

    Draper, Bruce A.

    Teaching Image Computation: From Computer Graphics to Computer Vision Bruce A. Draper and J. Ross@cs.colostate.edu ross@cs.colostate.edu Keywords: Computer Vision, Computer Graphics, Education, Course Design Abbreviated Title: From Graphics to Vision Abstract This paper describes a course in image computation

  7. Fundamentals of Image Processing

    E-print Network

    Erdem, Erkut

    A and phase f of the corresponding sine · How can F hold both? Complex number trick! )()()( iIRF += 22 · Method 0: filter the image with eye patch Input Filtered Image ],[],[],[ , lnkmflkgnmh lk ++= What in image · Method 1: filter the image with zero-mean eye Input Filtered Image (scaled) Thresholded

  8. Fundamentals of! Image Processing!

    E-print Network

    Erdem, Erkut

    can F hold both? Complex number trick! )()()( iIRF += 22 )()( IRA +±= )( )( tan 1 R I- = We can Correlation! Slide: Hoiem! Matching with filters" · Goal: find in image! · Method 0: filter the image with eye: find in image! · Method 1: filter the image with zero-mean eye! ! Input! Filtered Image (scaled

  9. Fundamentals of Image Processing

    E-print Network

    Erdem, Erkut

    can F hold both? Complex number trick! )()()( iIRF += 22 )()( IRA +±= )( )( tan 1 R I- = We can Slide: Hoiem #12;Matching with filters · Goal: find in image · Method 0: filter the image with eye: find in image · Method 1: filter the image with zero-mean eye Input Filtered Image (scaled

  10. Smart Image Enhancement Process

    NASA Technical Reports Server (NTRS)

    Jobson, Daniel J. (Inventor); Rahman, Zia-ur (Inventor); Woodell, Glenn A. (Inventor)

    2012-01-01

    Contrast and lightness measures are used to first classify the image as being one of non-turbid and turbid. If turbid, the original image is enhanced to generate a first enhanced image. If non-turbid, the original image is classified in terms of a merged contrast/lightness score based on the contrast and lightness measures. The non-turbid image is enhanced to generate a second enhanced image when a poor contrast/lightness score is associated therewith. When the second enhanced image has a poor contrast/lightness score associated therewith, this image is enhanced to generate a third enhanced image. A sharpness measure is computed for one image that is selected from (i) the non-turbid image, (ii) the first enhanced image, (iii) the second enhanced image when a good contrast/lightness score is associated therewith, and (iv) the third enhanced image. If the selected image is not-sharp, it is sharpened to generate a sharpened image. The final image is selected from the selected image and the sharpened image.

  11. FORTRAN Algorithm for Image Processing

    NASA Technical Reports Server (NTRS)

    Roth, Don J.; Hull, David R.

    1987-01-01

    FORTRAN computer algorithm containing various image-processing analysis and enhancement functions developed. Algorithm developed specifically to process images of developmental heat-engine materials obtained with sophisticated nondestructive evaluation instruments. Applications of program include scientific, industrial, and biomedical imaging for studies of flaws in materials, analyses of steel and ores, and pathology.

  12. Digital Image Processing Instructor: Namrata Vaswani

    E-print Network

    Vaswani, Namrata

    Digital Image Processing Instructor: Namrata Vaswani http://www.ece.iastate.edu/~namrata #12 requirements, delay sensitive, tolerates errors · Image Processing: image acquisition (to retain "most" information) & processing to improve image quality · Tomographic reconstruction · Image Analysis: Estimate

  13. Processes and priorities in planning mathematics teaching

    NASA Astrophysics Data System (ADS)

    Sullivan, Peter; Clarke, David J.; Clarke, Doug M.; Farrell, Lesley; Gerrard, Jessica

    2013-12-01

    Insights into teachers' planning of mathematics reported here were gathered as part of a broader project examining aspects of the implementation of the Australian curriculum in mathematics (and English). In particular, the responses of primary and secondary teachers to a survey of various aspects of decisions that inform their use of curriculum documents and assessment processes to plan their teaching are discussed. Teachers appear to have a clear idea of the overall topic as the focus of their planning, but they are less clear when asked to articulate the important ideas in that topic. While there is considerable diversity in the processes that teachers use for planning and in the ways that assessment information informs that planning, a consistent theme was that teachers make active decisions at all stages in the planning process. Teachers use a variety of assessment data in various ways, but these are not typically data extracted from external assessments. This research has important implications for those responsible for supporting teachers in the transition to the Australian Curriculum: Mathematics.

  14. What Does Teaching Writing as a Process Really Mean?

    Microsoft Academic Search

    Antonia Chandrasegaran

    For most teachers, teaching writing as a process consists of having students write a draft and requiring them to re-write it after peer editing. This write-rewrite process may benefit students who are already familiar with the rhetorical structure and linguistic characteristics of the expected text. But for students who are not, more systematic teaching of specific composing skills seems to

  15. Chemistry Graduate Teaching Assistants' Experiences in Academic Laboratories and Development of a Teaching Self-image

    NASA Astrophysics Data System (ADS)

    Gatlin, Todd Adam

    Graduate teaching assistants (GTAs) play a prominent role in chemistry laboratory instruction at research based universities. They teach almost all undergraduate chemistry laboratory courses. However, their role in laboratory instruction has often been overlooked in educational research. Interest in chemistry GTAs has been placed on training and their perceived expectations, but less attention has been paid to their experiences or their potential benefits from teaching. This work was designed to investigate GTAs' experiences in and benefits from laboratory instructional environments. This dissertation includes three related studies on GTAs' experiences teaching in general chemistry laboratories. Qualitative methods were used for each study. First, phenomenological analysis was used to explore GTAs' experiences in an expository laboratory program. Post-teaching interviews were the primary data source. GTAs experiences were described in three dimensions: doing, knowing, and transferring. Gains available to GTAs revolved around general teaching skills. However, no gains specifically related to scientific development were found in this laboratory format. Case-study methods were used to explore and illustrate ways GTAs develop a GTA self-image---the way they see themselves as instructors. Two general chemistry laboratory programs that represent two very different instructional frameworks were chosen for the context of this study. The first program used a cooperative project-based approach. The second program used weekly, verification-type activities. End of the semester interviews were collected and served as the primary data source. A follow-up case study of a new cohort of GTAs in the cooperative problem-based laboratory was undertaken to investigate changes in GTAs' self-images over the course of one semester. Pre-semester and post-semester interviews served as the primary data source. Findings suggest that GTAs' construction of their self-image is shaped through the interaction of 1) prior experiences, 2) training, 3) beliefs about the nature of knowledge, 4) beliefs about the nature of laboratory work, and 5) involvement in the laboratory setting. Further GTAs' self-images are malleable and susceptible to change through their laboratory teaching experiences. Overall, this dissertation contributes to chemistry education by providing a model useful for exploring GTAs' development of a self-image in laboratory teaching. This work may assist laboratory instructors and coordinators in reconsidering, when applicable, GTA training and support. This work also holds considerable implications for how teaching experiences are conceptualized as part of the chemistry graduate education experience. Findings suggest that appropriate teaching experiences may contribute towards better preparing graduate students for their journey in becoming scientists.

  16. Medical Image Processing

    Microsoft Academic Search

    Raj Shekhar; Vivek Walimbe; William Plishker

    \\u000a Of many types of images around us, medical images are a ubiquitous type since xrays were first discovered in 1985. The recent\\u000a years, especially after the introduction of computed tomography (CT) in 1972, have witnessed an explosion in the use of medical\\u000a imaging and, consequently, the volume of medical image data being produced. It is estimated that 40,000 terabytes of

  17. Voyager image processing at the Image Processing Laboratory

    NASA Technical Reports Server (NTRS)

    Jepsen, P. L.; Mosher, J. A.; Yagi, G. M.; Avis, C. C.; Lorre, J. J.; Garneau, G. W.

    1980-01-01

    This paper discusses new digital processing techniques as applied to the Voyager Imaging Subsystem and devised to explore atmospheric dynamics, spectral variations, and the morphology of Jupiter, Saturn and their satellites. Radiometric and geometric decalibration processes, the modulation transfer function, and processes to determine and remove photometric properties of the atmosphere and surface of Jupiter and its satellites are examined. It is exhibited that selected images can be processed into 'approach at constant longitude' time lapse movies which are useful in observing atmospheric changes of Jupiter. Photographs are included to illustrate various image processing techniques.

  18. Humanistic Teaching: A Process for Training Teachers.

    ERIC Educational Resources Information Center

    London, Robert

    This paper outlines an approach to training teachers in a repertoire of behaviors thought essential to humanistic teaching. Exercises necessary to give students a reasonable mastery of desired teaching behaviors are provided. The outline contains the following tasks: community-building exercises; definitions of nonjudgemental, acceptant,…

  19. A Case Study of How Teaching Practice Process Takes Place

    ERIC Educational Resources Information Center

    Yalin Ucar, Meltem

    2012-01-01

    The process of "learning" carries an important role in the teaching practice which provides teacher candidates with professional development. Being responsible for the learning experiences in that level, cooperating teacher, teacher candidate, mentor and practice school are the important variables which determine the quality of the teaching

  20. Data and image processing for abdominal imaging

    Microsoft Academic Search

    L. Bidaut

    2000-01-01

    Modern imaging techniques allow information from within the human body to be obtained by using noninvasive or minimally invasive\\u000a means. This article is intended as a summary of the tools used for processing and displaying such datasets, with a focus on\\u000a abdominal imaging. Although these tools and their applications are permanently evolving, their use for clinic and research\\u000a is already

  1. SWNT Imaging Using Multispectral Image Processing

    NASA Astrophysics Data System (ADS)

    Blades, Michael; Pirbhai, Massooma; Rotkin, Slava V.

    2012-02-01

    A flexible optical system was developed to image carbon single-wall nanotube (SWNT) photoluminescence using the multispectral capabilities of a typical CCD camcorder. The built in Bayer filter of the CCD camera was utilized, using OpenCV C++ libraries for image processing, to decompose the image generated in a high magnification epifluorescence microscope setup into three pseudo-color channels. By carefully calibrating the filter beforehand, it was possible to extract spectral data from these channels, and effectively isolate the SWNT signals from the background.

  2. Using Goldenrod Galls to Teach Science Process Skills.

    ERIC Educational Resources Information Center

    Peard, Terry L.

    1994-01-01

    Emphasizes the importance of using examples from the student's environment to aid in teaching science process skills. The author uses diagrams to aid in discussing the various uses of goldenrod (Solidago sp) galls in the classroom. (ZWH)

  3. Astronomical Image Processing with Hadoop

    NASA Astrophysics Data System (ADS)

    Wiley, K.; Connolly, A.; Krughoff, S.; Gardner, J.; Balazinska, M.; Howe, B.; Kwon, Y.; Bu, Y.

    2011-07-01

    In the coming decade astronomical surveys of the sky will generate tens of terabytes of images and detect hundreds of millions of sources every night. With a requirement that these images be analyzed in real time to identify moving sources such as potentially hazardous asteroids or transient objects such as supernovae, these data streams present many computational challenges. In the commercial world, new techniques that utilize cloud computing have been developed to handle massive data streams. In this paper we describe how cloud computing, and in particular the map-reduce paradigm, can be used in astronomical data processing. We will focus on our experience implementing a scalable image-processing pipeline for the SDSS database using Hadoop (http://hadoop.apache.org). This multi-terabyte imaging dataset approximates future surveys such as those which will be conducted with the LSST. Our pipeline performs image coaddition in which multiple partially overlapping images are registered, integrated and stitched into a single overarching image. We will first present our initial implementation, then describe several critical optimizations that have enabled us to achieve high performance, and finally describe how we are incorporating a large in-house existing image processing library into our Hadoop system. The optimizations involve prefiltering of the input to remove irrelevant images from consideration, grouping individual FITS files into larger, more efficient indexed files, and a hybrid system in which a relational database is used to determine the input images relevant to the task. The incorporation of an existing image processing library, written in C++, presented difficult challenges since Hadoop is programmed primarily in Java. We will describe how we achieved this integration and the sophisticated image processing routines that were made feasible as a result. We will end by briefly describing the longer term goals of our work, namely detection and classification of transient objects and automated object classification.

  4. Teaching electron diffraction and imaging of macromolecules

    Microsoft Academic Search

    Wah Chiu; Michad F. Schmid; B. V. Venkataram Prasad

    1993-01-01

    Electron microscopic analysis can be used to determine the three-dimensional strutures of macromolecules at resolutions ranging between 3 and 30 Å. It differs from nuclear magnetic resonance spectroscopy or x-ray crystallography in that it allows an object's Coulomb potential functions to be determined directly from images and can be used to study relatively complex macromolecular assemblies in a crystalline or

  5. Natural Language Processing by Computer and Language Teaching.

    ERIC Educational Resources Information Center

    Cook, V. J.; Fass, D.

    1986-01-01

    Outlines some applications of Natural Language Processing, the capacity of computers to process human language, to language teaching. The role of syntactic parsing (the assigning of grammatical structure to sentences by computer) and semantically based processing is examined. (Author/SED)

  6. Ethical implications of digital images for teaching and learning purposes: an integrative review

    PubMed Central

    Kornhaber, Rachel; Betihavas, Vasiliki; Baber, Rodney J

    2015-01-01

    Background Digital photography has simplified the process of capturing and utilizing medical images. The process of taking high-quality digital photographs has been recognized as efficient, timely, and cost-effective. In particular, the evolution of smartphone and comparable technologies has become a vital component in teaching and learning of health care professionals. However, ethical standards in relation to digital photography for teaching and learning have not always been of the highest standard. The inappropriate utilization of digital images within the health care setting has the capacity to compromise patient confidentiality and increase the risk of litigation. Therefore, the aim of this review was to investigate the literature concerning the ethical implications for health professionals utilizing digital photography for teaching and learning. Methods A literature search was conducted utilizing five electronic databases, PubMed, Embase (Excerpta Medica Database), Cumulative Index to Nursing and Allied Health Literature, Educational Resources Information Center, and Scopus, limited to English language. Studies that endeavored to evaluate the ethical implications of digital photography for teaching and learning purposes in the health care setting were included. Results The search strategy identified 514 papers of which nine were retrieved for full review. Four papers were excluded based on the inclusion criteria, leaving five papers for final analysis. Three key themes were developed: knowledge deficit, consent and beyond, and standards driving scope of practice. Conclusion The assimilation of evidence in this review suggests that there is value for health professionals utilizing digital photography for teaching purposes in health education. However, there is limited understanding of the process of obtaining and storage and use of such mediums for teaching purposes. Disparity was also highlighted related to policy and guideline identification and development in clinical practice. Therefore, the implementation of policy to guide practice requires further research.

  7. Fundamentals of Image Processing Ian T. Young

    E-print Network

    van Vliet, Lucas J.

    Fundamentals of Image Processing Ian T. Young Jan J. Gerbrands Lucas J. van Vliet #12;CIP OF IMAGE PROCESSING ISBN 90­75691­01­7 NUGI 841 Subject headings: Digital Image Processing / Digital Image of Technology. #12;Fundamentals of Image Processing 1. Introduction

  8. Validation in Medical Image Processing 1 Introduction

    E-print Network

    Boyer, Edmond

    Validation in Medical Image Processing 1 Introduction The increasingly important role of image processing in medicine Medical imaging is one of our most powerful tools for gaining insight into normal). The importance of validation in medical image processing Validation of medical image processing methods

  9. Pedagogical issues for effective teaching of biosignal processing and analysis.

    PubMed

    Sandham, William A; Hamilton, David J

    2010-01-01

    Biosignal processing and analysis is generally perceived by many students to be a challenging topic to understand, and to become adept with the necessary analytical skills. This is a direct consequence of the high mathematical content involved, and the many abstract features of the topic. The MATLAB and Mathcad software packages offer an excellent algorithm development environment for teaching biosignal processing and analysis modules, and can also be used effectively in many biosignal, and indeed bioengineering, research areas. In this paper, traditional introductory and advanced biosignal processing (and analysis) syllabi are reviewed, and the use of MATLAB and Mathcad for teaching and research is illustrated with a number of examples. PMID:21095992

  10. Polar Caps: Image Processing Tutorial

    NSDL National Science Digital Library

    George Tuthill

    This lesson plan is part of the Center for Educational Resources (CERES), a series of web-based astronomy lessons created by a team of master teachers, university faculty, and NASA researchers. In this tutorial, students learn to use computer image processing techniques to measure the size of Earth's polar ice caps and analyze various phenomena visible on planetary images. This lesson contains expected outcomes for students, materials, background information, follow-up questions, and assessment strategies.

  11. Image processing of galaxy photographs

    NASA Technical Reports Server (NTRS)

    Arp, H.; Lorre, J.

    1976-01-01

    New computer techniques for analyzing and processing photographic images of galaxies are presented, with interesting scientific findings gleaned from the processed photographic data. Discovery and enhancement of very faint and low-contrast nebulous features, improved resolution of near-limit detail in nebulous and stellar images, and relative colors of a group of nebulosities in the field are attained by the methods. Digital algorithms, nonlinear pattern-recognition filters, linear convolution filters, plate averaging and contrast enhancement techniques, and an atmospheric deconvolution technique are described. New detail is revealed in images of NGC 7331, Stephan's Quintet, Seyfert's Sextet, and the jet in M87, via processes of addition of plates, star removal, contrast enhancement, standard deviation filtering, and computer ratioing to bring out qualitative color differences.

  12. Geosciences 466/566 Digital Image Processing

    E-print Network

    Wright, Dawn Jeannine

    Geosciences 466/566 Digital Image Processing Winter 2007 Instructor Dr. Anne Nolin Wilkinson 120 This course focuses on the digital image processing of satellite image data. Topics include: data types, image://my.oregonstate.edu Textbook Jensen, J. R., Digital Image Processing: A Remote Sensing Perspective, 3rd Edition, Prentice Hall

  13. How to formulate image processing applications ?

    E-print Network

    Paris-Sud XI, Université de

    How to formulate image processing applications ? Arnaud Renouf, R´egis Clouard, and Marinette In the last fifty years, a lot of image processing applications have been developed in many fields (medicine in image processing terms has been little studied. Image processing specialists develop their applications

  14. Videos and images from 25 years of teaching compressible flow

    NASA Astrophysics Data System (ADS)

    Settles, Gary

    2008-11-01

    Compressible flow is a very visual topic due to refractive optical flow visualization and the public fascination with high-speed flight. Films, video clips, and many images are available to convey this in the classroom. An overview of this material is given and selected examples are shown, drawn from educational films, the movies, television, etc., and accumulated over 25 years of teaching basic and advanced compressible-flow courses. The impact of copyright protection and the doctrine of fair use is also discussed.

  15. [Perceptions of dentistry teachers in the teaching and learning process].

    PubMed

    Lazzarin, Helen Cristina; Nakama, Luiza; Cordoni Júnior, Luiz

    2010-06-01

    The didactic-pedagogical training of the university professor and of the quality of higher education must be revised due to the demands of the dynamic society and to the implementation of national curricular guidelines. Within this context, it was analyzed the perceptions of dentistry undergraduate of Universidade Estadual de Londrina teachers about the role of the teacher in the teaching and learning process. A qualitative research was carried out and data were collected through semi-structured interviews. Results showed that the teacher plays an essential role in the teaching and learning process, being the sole provider of knowledge. Teaching and learning strategies are based on oral transmission. Most part of the teachers got their didactic-pedagogical education from postgraduate Courses (Master's and/or PhD), that do not qualify teachers adequately for their teaching career. The teachers are not formally prepared for their teaching careers. In conclusion, findings from this study must be revised both regarding the training and the didactic-pedagogical upgrading in search of a general, humanist, critical and reflexive formation of the student. PMID:20640342

  16. Teaching Peer Review and the Process of Scientific Writing

    NSDL National Science Digital Library

    Dr. William H. Guilford (University of Virginia Department of Biomedical Engineering)

    2002-01-25

    Many undergraduate and graduate students understand neither the process of scientific writing nor the significance of peer review. In response, some instructors have created writing assignments that teach or mimic parts of the scientific publishing process. However, none fully reproduced peer review and revision of papers together with the writing and publishing process from research to final, accepted draft. In addition, most have been instituted at the graduate rather than undergraduate level. We present a detailed method for teaching undergraduate students the full scientific publishing process, including anonymous peer review, during the process of writing a "term paper." The result is a review article in the format for submission to a major scientific journal. This method has been implemented in the course Cell and Molecular Biology for Engineers at the University of Virginia. Use of this method resulted in improved grades, much higher quality in the final manuscript, greater objectivity in grading, and improved understanding of the importance of peer review.

  17. Using the Results of Teaching Evaluations to Improve Teaching: A Case Study of a New Systematic Process

    ERIC Educational Resources Information Center

    Malouff, John M.; Reid, Jackie; Wilkes, Janelle; Emmerton, Ashley J.

    2015-01-01

    This article describes a new 14-step process for using student evaluations of teaching to improve teaching. The new process includes examination of student evaluations in the context of instructor goals, student evaluations of the same course completed in prior terms, and evaluations of similar courses taught by other instructors. The process has…

  18. Digital Image Processing: A 1996 Review

    Microsoft Academic Search

    Jens Damgaard Andersen

    1996-01-01

    Digital image processing is a fast developing field rapidly gaining importance through spreading of picture-oriented electronic media and the merging of computer and television technology. Digital image processing is used in image analysis, image transmission and image storage and retrieval. Typical application areas are telecommunication, medicine, remote sensing, and the natural sciences and agriculture.

  19. Yes! The Business Department Teaches Data Processing

    ERIC Educational Resources Information Center

    Nord, Daryl; Seymour, Tom

    1978-01-01

    After a brief discussion of the history and current status of business data processing versus computer science, this article focuses on the characteristics of a business data processing curriculum as compared to a computer science curriculum, including distinctions between the FORTRAN and COBOL programming languages. (SH)

  20. Learning Processes and Teaching Strategies in Economics Education.

    ERIC Educational Resources Information Center

    Whitehead, David J.

    1983-01-01

    Why traditional teaching in economics education persists despite knowledge of learning processes and better approaches is discussed. Other approaches which permit the development of emotional and personal qualities as well as enrich the cognitive dimension are covered. These include brainstorming, role-playing games, and programed and…

  1. Direct Influence of English Teachers in the Teaching Learning Process

    ERIC Educational Resources Information Center

    Inamullah, Hafiz Muhammad; Hussain, Ishtiaq; Ud Din, M. Naseer

    2008-01-01

    Teachers play a vital role in the classroom environment. Interaction between teacher and students is an essential part of the teaching/learning process. An educator, Flanders originally developed an instrument called Flanders Interaction Analysis (FIA). The FIA system was designed to categorize the types, quantity of verbal interaction and direct…

  2. Introduction to Teaching Adults. Module 10: Understanding the Learning Process.

    ERIC Educational Resources Information Center

    Little, David

    This module on the learning process is the tenth of 11 modules in the set, Introduction to Teaching Adults. Designed to meet the learning needs of part-time continuing education instructors, these modules can be used as resource materials for local workshops or study-discussion groups, as self-instruction (each module takes approximately two…

  3. Student Evaluation of Teaching: An Instrument and a Development Process

    ERIC Educational Resources Information Center

    Alok, Kumar

    2011-01-01

    This article describes the process of faculty-led development of a student evaluation of teaching instrument at Centurion School of Rural Enterprise Management, a management institute in India. The instrument was to focus on teacher behaviors that students get an opportunity to observe. Teachers and students jointly contributed a number of…

  4. Using multimedia effectively in the teaching-learning process.

    PubMed

    DiGiacinto, Dora

    2007-01-01

    This report presents current learning theories that relate to multimedia use. It is important to understand how these learning theories apply to the instructional environment that faculty find themselves teaching in today's classroom. Textual information is often presented concurrently with visual information, but the way they are presented can improve or hinder the learning process of novice students. PMID:17941412

  5. Teaching Generalized Problem Solving and Science as a Process.

    ERIC Educational Resources Information Center

    Self, Charles C.

    Two instructors at Bunker Hill Community College in Massachusetts have developed a unit of study designed to teach biology as a process, improve students' critical thinking and reasoning skills, and provide students with the opportunity to express these skills in writing. The instructional strategies employed in the unit are superimposed on a…

  6. Experience Report: Teaching and Using the Personal Software Process (PSP)

    E-print Network

    Prechelt, Lutz

    Experience Report: Teaching and Using the Personal Software Process (PSP) Lutz Prechelt (prechelt evaluation. Abstract PSP is a methodology for an individual soft­ ware engineer's continuous self­improvement. Currently, few PSP experience reports are available from non­US sources, and hardly any from people other

  7. Experience Report: Teaching and Using the Personal Software Process PSP

    E-print Network

    Prechelt, Lutz

    Experience Report: Teaching and Using the Personal Software Process PSP Lutz Prechelt prechelt evaluation. Abstract PSP is a methodology for an individual soft- ware engineer's continuous self-improvement. Currently, few PSP experience reports are available from non-US sources, and hardly any from people other

  8. Researching Teaching and Learning: Roles, Identities and Interview Processes

    ERIC Educational Resources Information Center

    Conteh, Jean; Toyoshima, Saeko

    2005-01-01

    Socio-cultural models offer great scope for scope for theorising the complex processes involved in teaching and learning, and of capturing the nature of the co-constructions, which are important factors in success for both teachers and learners. But the implications of this theoretical stance are perhaps, not fully recognised in the attendant…

  9. Mathematics Teacher Research: Process, Practice and the Development of Teaching

    Microsoft Academic Search

    Barbara Jaworski

    1998-01-01

    This paper discusses a study of teacher researchers undertaking research into self-chosen aspects of their own mathematics teaching at the secondary level. The study used qualitative methods to explore the processes and practices of this research and the issues which it raised. Emergent theory of teachers' research activity fitted strongly with a view of action research relating to critical reflective

  10. Pedagogical issues for effective teaching of biosignal processing and analysis

    Microsoft Academic Search

    William A. Sandham; David J. Hamilton

    2010-01-01

    Biosignal processing and analysis is generally perceived by many students to be a challenging topic to understand, and to become adept with the necessary analytical skills. This is a direct consequence of the high mathematical content involved, and the many abstract features of the topic. The MATLAB® and Mathcad® software packages offer an excellent algorithm development environment for teaching biosignal

  11. The Teaching of L2 Pronunciation through Processing Instruction

    ERIC Educational Resources Information Center

    Gonzales-Bueno, Manuela; Quintana-Lara, Marcela

    2011-01-01

    The goal of this study is to pilot test whether the instructional approach known as Processing Instruction could be adapted to the teaching of second language (L2) pronunciation. The target sounds selected were the Spanish tap and trill. Three groups of high school students of Spanish as a foreign language participated in the study. One group…

  12. A Plan for Teaching Data Processing to Library Science Students.

    ERIC Educational Resources Information Center

    Losee, Robert M., Jr.

    An outline is proposed for a library school course in data processing for libraries that is different from other such courses in that it emphasizes the operations of the computer itself over the study of library computer systems. The course begins with a study of computer hardware then moves to the teaching of assembly language using the MIX…

  13. Optical processing for 3D digital imaging

    Microsoft Academic Search

    D. J. Brady

    2000-01-01

    Conventional optical imaging systems perform both information sensing and image formation functions. The optical system is generally designed to implement processing for image formation with a goal of optimizing analog image quality measures. Digital image involves a fundamental paradigm shift in which the “image” is no longer synonymous with the focal plane field distribution. A digital system may be designed

  14. Introduction to Image Processing Prof. George Wolberg

    E-print Network

    Wolberg, George

    1 Introduction to Image Processing Prof. George Wolberg Dept. of Computer Science City College of New York 2Wolberg: Image Processing Course Notes Course Description ·Intense introduction to image processing. ·Intended for advanced undergraduate and graduate students. ·Topics include: - Image enhancement

  15. Chemical Process Design: An Integrated Teaching Approach.

    ERIC Educational Resources Information Center

    Debelak, Kenneth A.; Roth, John A.

    1982-01-01

    Reviews a one-semester senior plant design/laboratory course, focusing on course structure, student projects, laboratory assignments, and course evaluation. Includes discussion of laboratory exercises related to process waste water and sludge. (SK)

  16. A Reconfigurable Image Capture and Image Processing System

    E-print Network

    Clausen, Michael

    at a local museum[1], the cameras were used only to relay images of the robot's environment to humanA Reconfigurable Image Capture and Image Processing System for Autonomous Robots --- A Proposal. These visual capabilities impose particular requirements on a robot's image processing system. The system has

  17. Image Resolution Enhancement and its applications to Medical Image Processing

    E-print Network

    Soatto, Stefano

    Image Resolution Enhancement and its applications to Medical Image Processing Shantanu H. Joshi1, University of California, Los Angeles, CA 90095, USA Abstract. This paper focuses on a new image resolution of image resolution enhancement concerns with the improvement of image resolution based on the fusion

  18. Teaching Word Processing in the Library.

    ERIC Educational Resources Information Center

    Teo, Elizabeth A.; Jenkins, Sylvia M.

    A description is provided of a program developed at Moraine Valley Community College (MVCC), in Illinois, for providing word processing instruction in the library, including recommendations for program development based on MVCC experience and results from a survey of program participants. The first part of the paper discusses a model development…

  19. SIP : a smart digital image processing library

    E-print Network

    Zhou, Mengyao

    2005-01-01

    The Smart Image Processing (SIP) library was developed to provide automated real-time digital image processing functions on camera phones with integer microprocessors. Many of the functions are not available on commercial ...

  20. ECE 468 Digital Image Processing Catalog Description: Introduction to digital image processing including fundamental concepts

    E-print Network

    ECE 468 ­ Digital Image Processing Catalog Description: Introduction to digital image processing processing. Implementation of algorithms using Matlab Image Processing Toolbox. Credits: 3 Terms Offered Histogram processing Image enhancement, both in the spatial domain and in the frequency domain (through 2D

  1. Biomedical signal and image processing.

    PubMed

    Cerutti, Sergio; Baselli, Giuseppe; Bianchi, Anna; Caiani, Enrico; Contini, Davide; Cubeddu, Rinaldo; Dercole, Fabio; Rienzo, Luca; Liberati, Diego; Mainardi, Luca; Ravazzani, Paolo; Rinaldi, Sergio; Signorini, Maria; Torricelli, Alessandro

    2011-01-01

    Generally, physiological modeling and biomedical signal processing constitute two important paradigms of biomedical engineering (BME): their fundamental concepts are taught starting from undergraduate studies and are more completely dealt with in the last years of graduate curricula, as well as in Ph.D. courses. Traditionally, these two cultural aspects were separated, with the first one more oriented to physiological issues and how to model them and the second one more dedicated to the development of processing tools or algorithms to enhance useful information from clinical data. A practical consequence was that those who did models did not do signal processing and vice versa. However, in recent years,the need for closer integration between signal processing and modeling of the relevant biological systems emerged very clearly [1], [2]. This is not only true for training purposes(i.e., to properly prepare the new professional members of BME) but also for the development of newly conceived research projects in which the integration between biomedical signal and image processing (BSIP) and modeling plays a crucial role. Just to give simple examples, topics such as brain–computer machine or interfaces,neuroengineering, nonlinear dynamical analysis of the cardiovascular (CV) system,integration of sensory-motor characteristics aimed at the building of advanced prostheses and rehabilitation tools, and wearable devices for vital sign monitoring and others do require an intelligent fusion of modeling and signal processing competences that are certainly peculiar of our discipline of BME. PMID:21642032

  2. Gradient-Domain Processing of Large Images

    E-print Network

    Kazhdan, Michael

    Gradient-Domain Processing of Large Images Misha Kazhdan and Hugues Hoppe Johns Hopkins University to represent images, it is not how our eyes process visual information. 1 1 #12;Motivation We tend to think way to represent images, it is not how our eyes process visual information. So it might

  3. COMPUTER ENG 4TN4 Image Processing

    E-print Network

    Haykin, Simon

    COMPUTER ENG 4TN4 Image Processing Academic year 2010-2011, term 2 Instructor: Xiaolin Wu, ITB-A315 for developing applications and for research in the field of image processing. · Provide training for the design and implementation of practical algorithms for image processing. Outline of Topics: · Introduction o Applications

  4. Gradient-Domain Processing of Large Images

    E-print Network

    Kazhdan, Michael

    Gradient-Domain Processing of Large Images Misha Kazhdan and Hugues Hoppe Johns Hopkins University to represent images, it is not how our eyes process visual information. 1 W 1 H #12;Motivation We tend to think way to represent images, it is not how our eyes process visual information. So it might

  5. Review of Biomedical Image Processing

    PubMed Central

    2011-01-01

    This article is a review of the book: 'Biomedical Image Processing', by Thomas M. Deserno, which is published by Springer-Verlag. Salient information that will be useful to decide whether the book is relevant to topics of interest to the reader, and whether it might be suitable as a course textbook, are presented in the review. This includes information about the book details, a summary, the suitability of the text in course and research work, the framework of the book, its specific content, and conclusions.

  6. Multispectral Image Processing for Plants

    NASA Technical Reports Server (NTRS)

    Miles, Gaines E.

    1991-01-01

    The development of a machine vision system to monitor plant growth and health is one of three essential steps towards establishing an intelligent system capable of accurately assessing the state of a controlled ecological life support system for long-term space travel. Besides a network of sensors, simulators are needed to predict plant features, and artificial intelligence algorithms are needed to determine the state of a plant based life support system. Multispectral machine vision and image processing can be used to sense plant features, including health and nutritional status.

  7. TRAINING PERIOD 2013 Image processing for space applications

    E-print Network

    Dobigeon, Nicolas

    TRAINING PERIOD 2013 Image processing for space applications Image Processing: Operational Processor Adaptation. Field: Development and Studies Speciality: Image processing Subject Image production subsystems require light and fast image processing modules. Astrium Satellites has developed a family

  8. Signal processing in medical imaging and image-guided intervention

    Microsoft Academic Search

    Milan Sonka

    2011-01-01

    Thisis an introductionto a specialsession ofICASSP devoted to signalprocessing techniquesin medicalimagingand image analysis that consists of this introduction and 5 research presentations, each addressingone aspect of the medicalimaging field in which signal processing plays an irreplaceable role. The topics cover a broad spectrum of medical imaging problems from image acquisition to image analysis to populationbased anatomical modeling. The focus is

  9. The hybrid image processing\\/expert image analysis system

    Microsoft Academic Search

    Jung H. Kim; E. H. Park; C. Ntuen; K. H. Sohn; W. Alexander

    1990-01-01

    The main purpose of this work is to analyze and interpret the X-ray image by using some knowledge base that relates objects within a scene to one another and to the scene background. Knowledge-based Image Analysis System (KIAS) is a prototype environment for image analysis and interpretation, KIAS consists of an image processing system and an expert system. It oversees

  10. An image processing technique for fire detection in video images

    Microsoft Academic Search

    Giuseppe Marbach; Markus Loepfe; Thomas Brupbacher

    2006-01-01

    This paper presents an image processing technique for automatic real time fire detection in video images. The underlying algorithm is based on the temporal variation of fire intensity captured by a visual image sensor. The full image sequences are analyzed to select a candidate flame region. Characteristic fire features are extracted from the candidate region and combined to determine the

  11. Concurrent Image Processing Executive (CIPE)

    NASA Technical Reports Server (NTRS)

    Lee, Meemong; Cooper, Gregory T.; Groom, Steven L.; Mazer, Alan S.; Williams, Winifred I.

    1988-01-01

    The design and implementation of a Concurrent Image Processing Executive (CIPE), which is intended to become the support system software for a prototype high performance science analysis workstation are discussed. The target machine for this software is a JPL/Caltech Mark IIIfp Hypercube hosted by either a MASSCOMP 5600 or a Sun-3, Sun-4 workstation; however, the design will accommodate other concurrent machines of similar architecture, i.e., local memory, multiple-instruction-multiple-data (MIMD) machines. The CIPE system provides both a multimode user interface and an applications programmer interface, and has been designed around four loosely coupled modules; (1) user interface, (2) host-resident executive, (3) hypercube-resident executive, and (4) application functions. The loose coupling between modules allows modification of a particular module without significantly affecting the other modules in the system. In order to enhance hypercube memory utilization and to allow expansion of image processing capabilities, a specialized program management method, incremental loading, was devised. To minimize data transfer between host and hypercube a data management method which distributes, redistributes, and tracks data set information was implemented.

  12. Image Processing Apr. 16, 2012

    E-print Network

    Erdem, Erkut

    the amplitude A and phase f of the corresponding sine · How can F hold both? Complex number trick! )()()( i · Goal: find in image · Method 0: filter the image with eye patch Input Filtered Image with zero-mean eye Input Filtered Image (scaled) Thresholded Image )],[()],[(],[ , lnkmgflkfnmh lk

  13. Imagetool: Image processing on the Sun workstation

    SciTech Connect

    Zander, M.E.

    1991-01-01

    This paper describes an environment that builds on UNIX for image processing on Sun workstations. It includes discussions on writing image analysis functions using a command line interface and on the manipulation of images from within an imaging program. It then describes the program imagetool, which displays images in a window environment and supplies a menu interface to the image-analysis functions, driven by the command line. 2 refs., 2 figs.

  14. Wavelet Based Methods inWavelet Based Methods in Image ProcessingImage Processing

    E-print Network

    Broughton, S. Allen

    1 Wavelet Based Methods inWavelet Based Methods in Image ProcessingImage Processing Applied 1997 · image processing course co-taught with Ed Doering Fall 1997 · attempt to make graduate level of TalksOutline of Talks · Lecture 1- Introduction to Image Processing, restoration, denoising, edge

  15. IEEE TRANSACTIONS ON IMAGE PROCESSING, VOL. 6, NO. 7, JULY 1997 933 Color Image Processing Using

    E-print Network

    Plataniotis, Konstantinos N.

    IEEE TRANSACTIONS ON IMAGE PROCESSING, VOL. 6, NO. 7, JULY 1997 933 Color Image Processing Using filters for color image processing are introduced and analyzed in this paper. The proposed adaptive of extensive research during the last ten years, primarily due to its importance to color image processing

  16. Theoretical Description of Teaching-Learning Processes: A Multidisciplinary Approach

    NASA Astrophysics Data System (ADS)

    Bordogna, Clelia M.; Albano, Ezequiel V.

    2001-09-01

    A multidisciplinary approach based on concepts from sociology, educational psychology, statistical physics, and computational science is developed for the theoretical description of teaching-learning processes that take place in the classroom. The emerging model is consistent with well-established empirical results, such as the higher achievements reached working in collaborative groups and the influence of the structure of the group on the achievements of the individuals. Furthermore, another social learning process that takes place in massive interactions among individuals via the Internet is also investigated.

  17. Theoretical description of teaching-learning processes: a multidisciplinary approach.

    PubMed

    Bordogna, C M; Albano, E V

    2001-09-10

    A multidisciplinary approach based on concepts from sociology, educational psychology, statistical physics, and computational science is developed for the theoretical description of teaching-learning processes that take place in the classroom. The emerging model is consistent with well-established empirical results, such as the higher achievements reached working in collaborative groups and the influence of the structure of the group on the achievements of the individuals. Furthermore, another social learning process that takes place in massive interactions among individuals via the Internet is also investigated. PMID:11531550

  18. Teaching Anatomy and Physiology Using Computer-Based, Stereoscopic Images

    NSDL National Science Digital Library

    David Kuehn

    2007-01-01

    Learning real three-dimensional (3D) anatomy for the first time can be challenging. Two dimensional drawings and plastic models tend to over-simplify the complexity of anatomy. The approach described uses stereoscopy to create 3D images of the process of cadaver dissection and to demonstrate the underlying anatomy related to the speech mechanisms.

  19. Parallel Array Processors for Digital Image Processing

    Microsoft Academic Search

    M. Tasto

    1977-01-01

    A major drawback of digital computer image processing is the large computation time required. On the other hand, its flexibility, programmability and computational accuracy make it desirable to use digital processing. Advances in technology of LSI circuitry have now made it possible to increase strongly the computational power of image processing systems by combining many ‘micro computers’ or processing elements

  20. Teaching the NIATx Model of Process Improvement as an Evidence-Based Process

    Microsoft Academic Search

    Alyson C. Evans; Traci Rieckmann; Maureen M. Fitzgerald; David H. Gustafson

    2007-01-01

    Process Improvement (PI) is an approach for helping or- ganizations to identify and resolve inefficient and ineffective processes through problem solving and pilot testing change. Use of PI in improv- ing client access, retention and outcomes in addiction treatment is on the rise through the teaching of the Network for the Improvement of Addic- tion Treatment's (NIATx) Model for Improvement.

  1. Teaching the NIATx Model of Process Improvement as an Evidence-Based Process

    ERIC Educational Resources Information Center

    Evans, Alyson C.; Rieckmann, Traci; Fitzgerald, Maureen M.; Gustafson, David H.

    2007-01-01

    Process Improvement (PI) is an approach for helping organizations to identify and resolve inefficient and ineffective processes through problem solving and pilot testing change. Use of PI in improving client access, retention and outcomes in addiction treatment is on the rise through the teaching of the Network for the Improvement of Addiction…

  2. Topics in genomic image processing 

    E-print Network

    Hua, Jianping

    2006-04-12

    : : : : : : : : : : : : : : : : : 10 A. Wavelet-based Medical Image Coding Schemes and M- FISH Image Compression . . . . . . . . . . . . . . . . . . . 10 B. Embedded M-FISH Image Coding (EMIC) . . . . . . . . . 12 1. Segmentation and Shape Coding . . . . . . . . . . . . 13 2. Integer... by losslessly compressing each channel using techniques such as Lempel-Ziv-Welch (LZW) coding [8, 9]. However, M-FISH image has an important characteristic that is distinct from many other types of medical images: it has a foreground which includes infor- mation...

  3. Student Evaluation of Teaching Effectiveness of a Nationwide Innovative Education Program on Image Display Technology

    ERIC Educational Resources Information Center

    Yueh, Hsiu-Ping; Chen, Tzy-Ling; Chiu, Li-An; Lee, San-Liang; Wang, An-Bang

    2012-01-01

    The study presented here explored a student evaluation of the teaching effectiveness of a nationwide innovative education program on image display technology in Taiwan. Using survey data collected through an online questionnaire system, covering 165 classes across 30 colleges and universities in Taiwan, the study aimed to understand the teaching

  4. A content-based medical teaching file assistant for CT lung image retrieval

    Microsoft Academic Search

    Chii Tung Liu; Pol Lin Tai; A. Y.-J. Chen; Chen-Hsiang Peng; Jia Shung Wang

    2000-01-01

    In this paper, a content-based scheme for assisting the construction of a teaching file system to retrieve lung Computed Tomographic (CT) images is presented. The system uses visual-based user interface to allow the user to enter or query an image by selecting the region of interest (ROI); and uses neural network to classify the relationship between the images stored in

  5. Color image processing for date quality evaluation

    Microsoft Academic Search

    Dah Jye Lee; James K. Archibald

    2010-01-01

    Many agricultural non-contact visual inspection applications use color image processing techniques because color is often a good indicator of product quality. Color evaluation is an essential step in the processing and inventory control of fruits and vegetables that directly affects profitability. Most color spaces such as RGB and HSV represent colors with three-dimensional data, which makes using color image processing

  6. Survey: Interpolation Methods in Medical Image Processing

    Microsoft Academic Search

    Thomas Martin Lehmann; Claudia Gönner; Klaus Spitzer

    1999-01-01

    Image interpolation techniques often are required in medical imaging for image generation (e.g., discrete back projection for inverse Radon transform) and processing such as compression or resampling. Since the ideal interpolation function spatially is unlimited, several interpolation kernels of finite size have been introduced. This paper compares 1) truncated and win- dowed sinc; 2) nearest neighbor; 3) linear; 4) quadratic;

  7. Digital image processing of metric camera imagery

    Microsoft Academic Search

    P. Lohmann

    1985-01-01

    The use of digitized Spacelab metric camera imagery for map updating is demonstrated for an area of Germany featuring agricultural and industrial areas, and a region of the White Nile. LANDSAT and Spacelab images were combined, and digital image processing techniques used for image enhancement. Updating was achieved by semiautomatic techniques, but for many applications manual editing may be feasible.

  8. Programmable remapper for image processing

    NASA Technical Reports Server (NTRS)

    Juday, Richard D. (inventor); Sampsell, Jeffrey B. (inventor)

    1991-01-01

    A video-rate coordinate remapper includes a memory for storing a plurality of transformations on look-up tables for remapping input images from one coordinate system to another. Such transformations are operator selectable. The remapper includes a collective processor by which certain input pixels of an input image are transformed to a portion of the output image in a many-to-one relationship. The remapper includes an interpolative processor by which the remaining input pixels of the input image are transformed to another portion of the output image in a one-to-many relationship. The invention includes certain specific transforms for creating output images useful for certain defects of visually impaired people. The invention also includes means for shifting input pixels and means for scrolling the output matrix.

  9. Recent developments in digital image processing at the image processing laboratory at the jet propulsion laboratory

    Microsoft Academic Search

    DOUGLAS A. O'HANDLEY; WILLIAM B. GREEN

    1972-01-01

    Image processing of spacecraft images has been carried on at the Jet Propulsion Laboratory since 1964. The most recent advances in removal of geometric distortion and residual image effects along with various types of mapping projections are covered. The recent applications of image processing to the areas of bio-medicine, forensic sciences, and astronomy are discussed. These treatments are of a

  10. Using Photographic Images as an Interactive Online Teaching Strategy

    ERIC Educational Resources Information Center

    Perry, Beth

    2006-01-01

    Teaching via distance requires inventive instructional strategies to facilitate an optimum learning experience. This qualitative research study evaluated the effect of one unique online teaching strategy called "photovoice" [Wang, C., & Burris, M. (1997). "Photovoice: Concept, methodology, and use for participatory needs assessment." "Health…

  11. Matching rendered and real world images by digital image processing

    NASA Astrophysics Data System (ADS)

    Mitjà, Carles; Bover, Toni; Bigas, Miquel; Escofet, Jaume

    2010-05-01

    Recent advances in computer-generated images (CGI) have been used in commercial and industrial photography providing a broad scope in product advertising. Mixing real world images with those rendered from virtual space software shows a more or less visible mismatching between corresponding image quality performance. Rendered images are produced by software which quality performance is only limited by the resolution output. Real world images are taken with cameras with some amount of image degradation factors as lens residual aberrations, diffraction, sensor low pass anti aliasing filters, color pattern demosaicing, etc. The effect of all those image quality degradation factors can be characterized by the system Point Spread Function (PSF). Because the image is the convolution of the object by the system PSF, its characterization shows the amount of image degradation added to any taken picture. This work explores the use of image processing to degrade the rendered images following the parameters indicated by the real system PSF, attempting to match both virtual and real world image qualities. The system MTF is determined by the slanted edge method both in laboratory conditions and in the real picture environment in order to compare the influence of the working conditions on the device performance; an approximation to the system PSF is derived from the two measurements. The rendered images are filtered through a Gaussian filter obtained from the taking system PSF. Results with and without filtering are shown and compared measuring the contrast achieved in different final image regions.

  12. Utilizing image processing techniques to compute herbivory.

    PubMed

    Olson, T E; Barlow, V M

    2001-01-01

    Leafy spurge (Euphorbia esula L. sensu lato) is a perennial weed species common to the north-central United States and southern Canada. The plant is a foreign species toxic to cattle. Spurge infestation can reduce cattle carrying capacity by 50 to 75 percent [1]. University of Wyoming Entomology doctoral candidate Vonny Barlow is conducting research in the area of biological control of leafy spurge via the Aphthona nigriscutis Foudras flea beetle. He is addressing the question of variability within leafy spurge and its potential impact on flea beetle herbivory. One component of Barlow's research consists of measuring the herbivory of leafy spurge plant specimens after introducing adult beetles. Herbivory is the degree of consumption of the plant's leaves and was measured in two different manners. First, Barlow assigned each consumed plant specimen a visual rank from 1 to 5. Second, image processing techniques were applied to "before" and "after" images of each plant specimen in an attempt to more accurately quantify herbivory. Standardized techniques were used to acquire images before and after beetles were allowed to feed on plants for a period of 12 days. Matlab was used as the image processing tool. The image processing algorithm allowed the user to crop the portion of the "before" image containing only plant foliage. Then Matlab cropped the "after" image with the same dimensions, converted the images from RGB to grayscale. The grayscale image was converted to binary based on a user defined threshold value. Finally, herbivory was computed based on the number of black pixels in the "before" and "after" images. The image processing results were mixed. Although, this image processing technique depends on user input and non-ideal images, the data is useful to Barlow's research and offers insight into better imaging systems and processing algorithms. PMID:11347423

  13. Planar subarray processing for SAR imaging

    Microsoft Academic Search

    R. P. Perry; R. C. DiPietro; B. L. Johnson; A. Kozma; J. J. Vaccaro

    1995-01-01

    A new multiresolution SAR image formation algorithm called planar subarray processing, PSAP, is presented. The PSAP provides the capability to perform intermediate decisions using lower resolution image data to redirect the remaining processing functions. These intermediate decisions can include, target detection, change detection, super resolution, and moving target parameter estimation. The PSAP algorithm has a tree like flow structure using

  14. Grain Counting Method Based On Image Processing

    Microsoft Academic Search

    Zhao Ping; Li Yongkui

    2009-01-01

    Grain counting is very important for breeding and quality inspection. In order to improve the efficiency and precision of grain counting, a novel method based on MATLAB image processing technology and mechanical vibration technology was proposed. It can effectively resolve the overlaps and conglutinations among grains by mechanical vibration and image erosion processing respectively. Experiment results show that this method

  15. Teaching Learning Collaborative: A Process for Supporting Professional Learning Communities

    NSDL National Science Digital Library

    Jo Topps

    2009-04-02

    The teaching learning collaborative (TLC) is a unique professional development strategy that engages groups of teachers in collaborative planning and teaching of a science lesson, coaching and mentoring, and examining student work. In this chapter, the au

  16. Biomedical image analysis and processing in clouds

    NASA Astrophysics Data System (ADS)

    Bednarz, Tomasz; Szul, Piotr; Arzhaeva, Yulia; Wang, Dadong; Burdett, Neil; Khassapov, Alex; Chen, Shiping; Vallotton, Pascal; Lagerstrom, Ryan; Gureyev, Tim; Taylor, John

    2013-10-01

    Cloud-based Image Analysis and Processing Toolbox project runs on the Australian National eResearch Collaboration Tools and Resources (NeCTAR) cloud infrastructure and allows access to biomedical image processing and analysis services to researchers via remotely accessible user interfaces. By providing user-friendly access to cloud computing resources and new workflow-based interfaces, our solution enables researchers to carry out various challenging image analysis and reconstruction tasks. Several case studies will be presented during the conference.

  17. Introduction to Image Processing I-Liang Chern

    E-print Network

    of images · Daily-life images · Astro images · Medical images #12;Standard images #12;Hubble site #12;3D Ø Image Compression Book: Rafael C. Gonzalez and Richard E. Woods, Digital Image Processing are Digital Images? 1. What is a digital image? A digital image Is an array, or a matrix , of square pixels

  18. Digital image processing and analysis

    E-print Network

    van Vliet, Lucas J.

    Geometry (projection) Photon noise Resolution (defocusing) Lens properties (M, NA, , fluor) Non(x,y) Projection of a 3-D scene onto a 2-D sensor 3-D images: f(x,y,z) CT: Computerized tomography MRI: Magnetic

  19. Hyperspectral imaging for food processing automation

    NASA Astrophysics Data System (ADS)

    Park, Bosoon; Lawrence, Kurt C.; Windham, William R.; Smith, Doug P.; Feldner, Peggy W.

    2002-11-01

    This paper presents the research results that demonstrates hyperspectral imaging could be used effectively for detecting feces (from duodenum, ceca, and colon) and ingesta on the surface of poultry carcasses, and potential application for real-time, on-line processing of poultry for automatic safety inspection. The hyperspectral imaging system included a line scan camera with prism-grating-prism spectrograph, fiber optic line lighting, motorized lens control, and hyperspectral image processing software. Hyperspectral image processing algorithms, specifically band ratio of dual-wavelength (565/517) images and thresholding were effective on the identification of fecal and ingesta contamination of poultry carcasses. A multispectral imaging system including a common aperture camera with three optical trim filters (515.4 nm with 8.6- nm FWHM), 566.4 nm with 8.8-nm FWHM, and 631 nm with 10.2-nm FWHM), which were selected and validated by a hyperspectral imaging system, was developed for a real-time, on-line application. A total image processing time required to perform the current multispectral images captured by a common aperture camera was approximately 251 msec or 3.99 frames/sec. A preliminary test shows that the accuracy of real-time multispectral imaging system to detect feces and ingesta on corn/soybean fed poultry carcasses was 96%. However, many false positive spots that cause system errors were also detected.

  20. Image processing: mathematics, engineering, or art

    SciTech Connect

    Hanson, K.M.

    1985-01-01

    From the strict mathematical viewpoint, it is impossible to fully achieve the goal of digital image processing, which is to determine an unknown function of two dimensions from a finite number of discrete measurements linearly related to it. However, the necessity to display image data in a form that is visually useful to an observer supersedes such mathematically correct admonitions. Engineering defines the technological limits of what kind of image processing can be done and how the resulting image can be displayed. The appeal and usefulness of the final image to the human eye pertains to aesthetics. Effective image processing necessitates unification of mathematical theory, practical implementation, and artistic display. 59 references, 6 figures.

  1. Enriching student concept images: Teaching and learning fractions through a multiple-embodiment approach

    NASA Astrophysics Data System (ADS)

    Zhang, Xiaofen; Clements, M. A. (Ken); Ellerton, Nerida F.

    2015-06-01

    This study investigated how fifth-grade children's concept images of the unit fractions represented by the symbols , , and changed as a result of their participation in an instructional intervention based on multiple embodiments of fraction concepts. The participants' concept images were examined through pre- and post-teaching written questions and pre- and post-teaching one-to-one verbal interview questions. Results showed that at the pre-teaching stage, the student concept images of unit fractions were very narrow and mainly linked to area models. However, after the instructional intervention, the fifth graders were able to select and apply a variety of models in response to unit fraction tasks, and their concept images of unit fractions were enriched and linked to capacity, perimeter, linear and discrete models, as well as to area models. Their performances on tests had improved, and their conceptual understandings of unit fractions had developed.

  2. Image processing for cameras with fiber bundle image relay.

    PubMed

    Olivas, Stephen J; Arianpour, Ashkan; Stamenov, Igor; Morrison, Rick; Stack, Ron A; Johnson, Adam R; Agurok, Ilya P; Ford, Joseph E

    2015-02-10

    Some high-performance imaging systems generate a curved focal surface and so are incompatible with focal plane arrays fabricated by conventional silicon processing. One example is a monocentric lens, which forms a wide field-of-view high-resolution spherical image with a radius equal to the focal length. Optical fiber bundles have been used to couple between this focal surface and planar image sensors. However, such fiber-coupled imaging systems suffer from artifacts due to image sampling and incoherent light transfer by the fiber bundle as well as resampling by the focal plane, resulting in a fixed obscuration pattern. Here, we describe digital image processing techniques to improve image quality in a compact 126° field-of-view, 30 megapixel panoramic imager, where a 12 mm focal length F/1.35 lens made of concentric glass surfaces forms a spherical image surface, which is fiber-coupled to six discrete CMOS focal planes. We characterize the locally space-variant system impulse response at various stages: monocentric lens image formation onto the 2.5 ?m pitch fiber bundle, image transfer by the fiber bundle, and sensing by a 1.75 ?m pitch backside illuminated color focal plane. We demonstrate methods to mitigate moiré artifacts and local obscuration, correct for sphere to plane mapping distortion and vignetting, and stitch together the image data from discrete sensors into a single panorama. We compare processed images from the prototype to those taken with a 10× larger commercial camera with comparable field-of-view and light collection. PMID:25968031

  3. Dual Image Processing For Stereoscopic Display

    NASA Astrophysics Data System (ADS)

    Balasubramonian, K.; Gunasekaran, S.; Nithiyanandam, N.; Rajappan, K. P...

    1983-10-01

    For an in-depth study of features of the celestial surface, stereoscopic imaging technique serves as a powerful and efficient tool as it brings in depth information onto the images displayed. A system registering the stereo pair of satallite images, processing the dual images for enhancement and restoration and displaying them in twin picture tubes for stereo visualization is described. As an example, edge enhancement, median filtering and histogram equalization techniques are applied to the experimental stereo pair of images to show a considerable improvement in the quality of the 3D image visualized. Bicircularly polarized viewing system is used in the stereoscopic display system enabling the display for mass viewing. A method of generating the range image and stereoscopic image pair is also indicated.

  4. On some applications of diffusion processes for image processing

    NASA Astrophysics Data System (ADS)

    Morfu, S.

    2009-06-01

    We propose a new algorithm inspired by the properties of diffusion processes for image filtering. We show that purely nonlinear diffusion processes ruled by Fisher equation allows contrast enhancement and noise filtering, but involves a blurry image. By contrast, anisotropic diffusion, described by Perona and Malik algorithm, allows noise filtering and preserves the edges. We show that combining the properties of anisotropic diffusion with those of nonlinear diffusion provides a better processing tool which enables noise filtering, contrast enhancement and edge preserving.

  5. Improvement of hospital processes through business process management in Qaem Teaching Hospital: A work in progress

    PubMed Central

    Yarmohammadian, Mohammad H.; Ebrahimipour, Hossein; Doosty, Farzaneh

    2014-01-01

    In a world of continuously changing business environments, organizations have no option; however, to deal with such a big level of transformation in order to adjust the consequential demands. Therefore, many companies need to continually improve and review their processes to maintain their competitive advantages in an uncertain environment. Meeting these challenges requires implementing the most efficient possible business processes, geared to the needs of the industry and market segments that the organization serves globally. In the last 10 years, total quality management, business process reengineering, and business process management (BPM) have been some of the management tools applied by organizations to increase business competiveness. This paper is an original article that presents implementation of “BPM” approach in the healthcare domain that allows an organization to improve and review its critical business processes. This project was performed in “Qaem Teaching Hospital” in Mashhad city, Iran and consists of four distinct steps; (1) identify business processes, (2) document the process, (3) analyze and measure the process, and (4) improve the process. Implementing BPM in Qaem Teaching Hospital changed the nature of management by allowing the organization to avoid the complexity of disparate, soloed systems. BPM instead enabled the organization to focus on business processes at a higher level. PMID:25540784

  6. Improvement of hospital processes through business process management in Qaem Teaching Hospital: A work in progress.

    PubMed

    Yarmohammadian, Mohammad H; Ebrahimipour, Hossein; Doosty, Farzaneh

    2014-01-01

    In a world of continuously changing business environments, organizations have no option; however, to deal with such a big level of transformation in order to adjust the consequential demands. Therefore, many companies need to continually improve and review their processes to maintain their competitive advantages in an uncertain environment. Meeting these challenges requires implementing the most efficient possible business processes, geared to the needs of the industry and market segments that the organization serves globally. In the last 10 years, total quality management, business process reengineering, and business process management (BPM) have been some of the management tools applied by organizations to increase business competiveness. This paper is an original article that presents implementation of "BPM" approach in the healthcare domain that allows an organization to improve and review its critical business processes. This project was performed in "Qaem Teaching Hospital" in Mashhad city, Iran and consists of four distinct steps; (1) identify business processes, (2) document the process, (3) analyze and measure the process, and (4) improve the process. Implementing BPM in Qaem Teaching Hospital changed the nature of management by allowing the organization to avoid the complexity of disparate, soloed systems. BPM instead enabled the organization to focus on business processes at a higher level. PMID:25540784

  7. Process perspective on image quality evaluation

    NASA Astrophysics Data System (ADS)

    Leisti, Tuomas; Halonen, Raisa; Kokkonen, Anna; Weckman, Hanna; Mettänen, Marja; Lensu, Lasse; Ritala, Risto; Oittinen, Pirkko; Nyman, Göte

    2008-01-01

    The psychological complexity of multivariate image quality evaluation makes it difficult to develop general image quality metrics. Quality evaluation includes several mental processes and ignoring these processes and the use of a few test images can lead to biased results. By using a qualitative/quantitative (Interpretation Based Quality, IBQ) methodology, we examined the process of pair-wise comparison in a setting, where the quality of the images printed by laser printer on different paper grades was evaluated. Test image consisted of a picture of a table covered with several objects. Three other images were also used, photographs of a woman, cityscape and countryside. In addition to the pair-wise comparisons, observers (N=10) were interviewed about the subjective quality attributes they used in making their quality decisions. An examination of the individual pair-wise comparisons revealed serious inconsistencies in observers' evaluations on the test image content, but not on other contexts. The qualitative analysis showed that this inconsistency was due to the observers' focus of attention. The lack of easily recognizable context in the test image may have contributed to this inconsistency. To obtain reliable knowledge of the effect of image context or attention on subjective image quality, a qualitative methodology is needed.

  8. Teaching and Learning Information Technology Process: From a 25 Year Perspective--Math Regents

    ERIC Educational Resources Information Center

    Lewis Sanchez, Louise

    2007-01-01

    This paper will describe the Teaching and Learning Informational Technology Process (TLITP). Before present day strategies, teaching and learning relied on transformations based on quantification to measure performance. The process will be a non-linear three construct of teacher, student and community. Emphasizing old practices now is the…

  9. Teaching Is . . .

    ERIC Educational Resources Information Center

    Harmin, Merrill; Gregory, Tom

    This book is an orientation to teaching designed to help establish a comfortable self-image and to develop appropriate skills. Readings and experiences are presented in the five-part text to aid in this orientation process. Part 1 discusses forming a group that functions as a support system, a human experience resource, and a source of feedback…

  10. Image-plane processing of visual information

    NASA Technical Reports Server (NTRS)

    Huck, F. O.; Fales, C. L.; Park, S. K.; Samms, R. W.

    1984-01-01

    Shannon's theory of information is used to optimize the optical design of sensor-array imaging systems which use neighborhood image-plane signal processing for enhancing edges and compressing dynamic range during image formation. The resultant edge-enhancement, or band-pass-filter, response is found to be very similar to that of human vision. Comparisons of traits in human vision with results from information theory suggest that: (1) Image-plane processing, like preprocessing in human vision, can improve visual information acquisition for pattern recognition when resolving power, sensitivity, and dynamic range are constrained. Improvements include reduced sensitivity to changes in lighter levels, reduced signal dynamic range, reduced data transmission and processing, and reduced aliasing and photosensor noise degradation. (2) Information content can be an appropriate figure of merit for optimizing the optical design of imaging systems when visual information is acquired for pattern recognition. The design trade-offs involve spatial response, sensitivity, and sampling interval.

  11. Processing Welding Images For Robot Control

    NASA Technical Reports Server (NTRS)

    Richardson, Richard W.

    1988-01-01

    Image data from two distinct windows used to locate weld features. Analyzer part of vision system described in companion article, "Image Control in Automatic Welding Vision System" (MFS-26035). Horizontal video lines define windows for viewing unwelded joint and weld pool. Data from picture elements outside windows not processed. Widely-separated local features carry no significance, but closely spaced features indicate welding feature. Image processor assigns confidence level to group of local features according to spacing and pattern.

  12. Grading meat quality by image processing

    Microsoft Academic Search

    Kazuhiko Shiranita; Kenichiro Hayashi; Akifumi Otsubo; Tsuneharu Miyajima; Ryuzo Takiyama

    2000-01-01

    We study the implementation of a meat-quality grading system, using the concept of the “marbling score”, as well as image processing, neural network techniques and multiple regression analysis. The marbling score is a measure of the distribution density of fat in the rib-eye region. We identify five features used for grading meat images. For the evaluation of the five features,

  13. Order statistics in digital image processing

    Microsoft Academic Search

    IOANNIS PITAS; ANASTASIOS N. VENETSANOPOULOS

    1992-01-01

    A family of nonlinear filters based on order statistics is presented. A mathematical tool derived through robust estimation theory, order statistics has allowed engineers to develop nonlinear filters with excellent robustness properties. These filters are well suited to digital image processing because they preserve the edges and the fine details of an image much better than conventional linear filters. The

  14. ENVIRONMENTALLYORIENTED PROCESSING OF MULTISPECTRAL SATELLITE IMAGES

    E-print Network

    Kreinovich, Vladik

    ENVIRONMENTALLY­ORIENTED PROCESSING OF MULTI­SPECTRAL SATELLITE IMAGES: NEW CHALLENGES FOR BAYESIAN METHODS S.A. STARKS AND V. KREINOVICH NASA Pan American Center for Earth and Environmental Studies University of Texas at El Paso El Paso, TX 79968, USA y Abstract. Remotely sensed images from new generation

  15. Medical image processing with optical Fourier techniques

    Microsoft Academic Search

    Pengfei Wu

    2003-01-01

    Medical image processing is demonstrated by using Fourier techniques. Two optical Fourier systems are designed: the first one is a real-time optical processor with spatial filters and the second one is a self-adaptive optical processor with nonlinear optical films of the biomaterial Bacteriorhodopsin. Medical images including mammograms and Pap smears are investigated by using our optical systems. The desired components

  16. ISAR echoes coherent processing and imaging

    Microsoft Academic Search

    Xing Mengdao; Lan Jinqiao; Bao Zheng; Liao Guisheng

    2004-01-01

    The general approach to ISAR imaging is range-Doppler (RD) imaging approach. For this approach, the translational motion compensation (TMC) is firstly obtained by envelope alignment and autofocus, so the target can be treated as a rotating target for the next processing. But in this method, scatterers' migration through resolution cells (MTRC) caused by rotational motion is neglected. However in practice,

  17. Digital Image Processing in Private Industry.

    ERIC Educational Resources Information Center

    Moore, Connie

    1986-01-01

    Examines various types of private industry optical disk installations in terms of business requirements for digital image systems in five areas: records management; transaction processing; engineering/manufacturing; information distribution; and office automation. Approaches for implementing image systems are addressed as well as key success…

  18. Overview on pyramid machines for image processing

    SciTech Connect

    Di Gesu, V.

    1986-08-01

    This paper is intended to review the existing hierarchical multiprocessor machines dedicated to Image Processing (IP). Some general design concepts are given and compared in terms of hardware and software complexity. 33 refs., 9 figs., 3 tabs.

  19. Command Line Image Processing System (CLIPS)

    NASA Astrophysics Data System (ADS)

    Fleagle, S. R.; Meyers, G. L.; Kulinski, R. G.

    1985-06-01

    An interactive image processing language (CLIPS) has been developed for use in an image processing environment. CLIPS uses a simple syntax with extensive on-line help to allow even the most naive user perform complex image processing tasks. In addition, CLIPS functions as an interpretive language complete with data structures and program control statements. CLIPS statements fall into one of three categories: command, control,and utility statements. Command statements are expressions comprised of intrinsic functions and/or arithmetic operators which act directly on image or user defined data. Some examples of CLIPS intrinsic functions are ROTATE, FILTER AND EXPONENT. Control statements allow a structured programming style through the use of statements such as DO WHILE and IF-THEN - ELSE. Utility statements such as DEFINE, READ, and WRITE, support I/O and user defined data structures. Since CLIPS uses a table driven parser, it is easily adapted to any environment. New commands may be added to CLIPS by writing the procedure in a high level language such as Pascal or FORTRAN and inserting the syntax for that command into the table. However, CLIPS was designed by incorporating most imaging operations into the language as intrinsic functions. CLIPS allows the user to generate new procedures easily with these powerful functions in an interactive or off line fashion using a text editor. The fact that CLIPS can be used to generate complex procedures quickly or perform basic image processing functions interactively makes it a valuable tool in any image processing environment.

  20. Position invariant linear operations in image processing

    E-print Network

    Dillon, Terrence Lee

    1972-01-01

    POSITION INVARIANT LINEAR OPERATIONS IN IMAGE PROCESSING A Thesis by TERRENCE LEE DILLON Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirement for the degree of MASTER OF SCIENCE May 1972 Major... Subject: Mathematics POSITION INVARIANT LINEAR OPERATIONS IN IMAGE PROCESSING A Thesis by TERRENCE LEE DILLON Approved as to style and content by: (Chairman of Committee) (Head of Department) (Ij gQ' /g~gu (Member (Member) May l972 ABSTRACT...

  1. Digital image processing of coal stream combustion 

    E-print Network

    Gopalakrishnan, Chengappalli Periyasamy

    1994-01-01

    DIGITAL IMAGE PROCESSING OF COAL STREAM COMBUSTION A Thesis by CHENGAPPALLI PERIYASAMY GOPALAKRISHNAN Submitted to Texas A k M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE Approved as to style... and content by: a yan Annama at (Chair of Committee) en (Member) Norman C. Gris old (Member) George Peterson (Head of Department) May 1994 Major Subject: Mechanical Engineering ABSTRACT Digital Image Processing of Coal Stream Combustion. (May 1994...

  2. Color image processing for date quality evaluation

    NASA Astrophysics Data System (ADS)

    Lee, Dah Jye; Archibald, James K.

    2010-01-01

    Many agricultural non-contact visual inspection applications use color image processing techniques because color is often a good indicator of product quality. Color evaluation is an essential step in the processing and inventory control of fruits and vegetables that directly affects profitability. Most color spaces such as RGB and HSV represent colors with three-dimensional data, which makes using color image processing a challenging task. Since most agricultural applications only require analysis on a predefined set or range of colors, mapping these relevant colors to a small number of indexes allows simple and efficient color image processing for quality evaluation. This paper presents a simple but efficient color mapping and image processing technique that is designed specifically for real-time quality evaluation of Medjool dates. In contrast with more complex color image processing techniques, the proposed color mapping method makes it easy for a human operator to specify and adjust color-preference settings for different color groups representing distinct quality levels. Using this color mapping technique, the color image is first converted to a color map that has one color index represents a color value for each pixel. Fruit maturity level is evaluated based on these color indices. A skin lamination threshold is then determined based on the fruit surface characteristics. This adaptive threshold is used to detect delaminated fruit skin and hence determine the fruit quality. The performance of this robust color grading technique has been used for real-time Medjool date grading.

  3. Evaluation of the Teaching-Learning Process with Fuzzy Cognitive Maps

    Microsoft Academic Search

    Ana Lilia Laureano-cruces; Javier Ramírez-rodríguez; Amador Terán-gilmore

    2004-01-01

    \\u000a The evaluation of the teaching-learning process is a conduct that poses great challenges from a modeling perspective. Tutor\\u000a modules form part of intelligent systems that are applied to education, and should assess: when to interrupt, how to teach\\u000a a given topic, and what to teach in a given moment. By considering the different types of errors, a good evaluation of

  4. A residual hybrid encoder for image processing

    E-print Network

    Beck, John Andrew

    1980-01-01

    A RESIDUAL HYBRID ENCODER FOR IMAGE PROCESSING A Thesis by JOHN ANDREW BECK Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirement for the degree of MASTER OF SCIENCE August 1980 Major Subject...: Electrical Engineering A RESIDUAL HYBRID ENCODI'. R FOR IMAGE PROCESSING A Thesis by JOIE ANDREW BECK Approued as to style andI content by: (I'lember) (IIember) (I ad of Depar . nt) August 1980 ABSTRACT A Residual Hybrid Encoder for Image...

  5. Mobile Phone Images and Video in Science Teaching and Learning

    ERIC Educational Resources Information Center

    Ekanayake, Sakunthala Yatigammana; Wishart, Jocelyn

    2014-01-01

    This article reports a study into how mobile phones could be used to enhance teaching and learning in secondary school science. It describes four lessons devised by groups of Sri Lankan teachers all of which centred on the use of the mobile phone cameras rather than their communication functions. A qualitative methodological approach was used to…

  6. A VIRTUAL REALITY ELECTROCARDIOGRAPHY TEACHING TOOL Image Synthesis Group

    E-print Network

    O'Sullivan, Carol

    present a novel approach to producing a tool for use in the teaching of electrocardiography. A volumetric of the electrical depolarisation and repolarisation cycles of the heart on both the 3D cardiac model and 2D ECG, Virtual Reality, ECG simulation, cardiac modelling, texture-based volume Introduction With the advent of 3

  7. Snapping Sharks, Maddening Mindreaders, and Interactive Images: Teaching Correlation.

    ERIC Educational Resources Information Center

    Mitchell, Mark L.

    Understanding correlation coefficients is difficult for students. A free computer program that helps introductory psychology students distinguish between positive and negative correlation, and which also teaches them to understand the differences between correlation coefficients of different size is described in this paper. The program is…

  8. Image processing system for magnetic domain observation

    NASA Astrophysics Data System (ADS)

    Okuno, H.; Murai, H.; Sakaki, Y.

    1988-11-01

    This research presents the design and results of an image processing system for static and dynamic observation of magnetic domains. The technique is based on the use of a polarizing microscope, a CCD camera, a frame memory, and a personal computer. Because it is not necessary to use the processed data for real time control, a system was designed in which the data processing was performed after the acquisition of all data. The static image is obtained by a combination of averaging, subtraction of background noise, and median filtering methods. A dynamic image with 85(V)×96(H) pixels/field is acquired at the sampling rate of 30 fields/s. Using this system, static and dynamic domain images of Supermalloy multilayered core and amorphous ribbon were obtained.

  9. Teaching Secondary School Geography with a Focus upon National Images.

    ERIC Educational Resources Information Center

    Allen, Rodney F.

    The world is made up of over 185 nation-states. This paper offers advice for geography teachers and students on how to focus their study of some nations in terms of their national images. The goals for studying national images are (1) to understand how national images are constructed and influence thought and behavior; (2) to test the linkage…

  10. Edge Detection in Digital Image Processing Debosmit Ray

    E-print Network

    Morrow, James A.

    Edge Detection in Digital Image Processing Debosmit Ray Thursday, June 06, 2013. 1. Introduction In this paper, I discuss the mathematical theorems and algorithms used in image processing. Digital Image Processing is the use of com- puter algorithms to perform image processing on digital images. Since the use

  11. Image Processing on Encoded Video Sequences

    Microsoft Academic Search

    Farshid Arman; Arding Hsu; Ming-yee Chiu

    1994-01-01

    This paper presents a novel approach to processing encoded video sequences prior to com- plete decoding. Scene changes are easily detected using DCT coefficients in JPEG and MPEG encoded video sequences. In addition, by analyzing the DCT coefficients, regions of interest may be isolated prior to decompression, increasing efficiency of any subsequent image processing steps, such as edge detection. The

  12. Automated fruit grading system using image processing

    Microsoft Academic Search

    John B. Njoroge; Kazunori Ninomiya; Naoshi Kondo; H. Toita

    2002-01-01

    This paper describes the operations and performance of an automated quality verification system for agricultural products and its main features. The system utilizes improved engineering designs and image-processing techniques to convey and grade products. Basically two inspection stages of the system can be identified: external fruit inspection and internal fruit inspection. Surface inspection is accomplished through processing of color CCD

  13. Hardware architecture for advanced image processing

    Microsoft Academic Search

    Kamil Grabowski; Andrzej Napieralski

    2010-01-01

    The computation speed offered by nowadays embed­ded systems allows combining advanced signal processing and data acquisition in dedicated architectures optimized for given applications. Such architectures can be used for 2D\\/3D signal analysis and reconstruction in such broad areas as: medical signal processing — tomography object reconstruction (USG, PET, CT, OCT, etc.), biomedical image analysis — automated object segmentation and diagnostic

  14. Automated Fish Counting Using Image Processing

    Microsoft Academic Search

    Y. H. Toh; T. M. Ng; B. K. Liew

    2009-01-01

    This paper presents a simple method of counting feeder fish automatically using image processing techniques. A video of a school of fish is taken and every frame is processed singly and independently. The first step is to obtain blobs marking the positions of the fish. Several ways of accomplishing this task are discussed. Noise and background objects are filtered from

  15. Hyperemittance measurement with an image processing system

    Microsoft Academic Search

    Y. L. Pan; X. Z. Shi; X. F. Guan; Gao Q. Sun; Z. Y. Yang; J. Y. Chen

    A method, by adopting the pattern recognition technique with an image processing system, is proposed to realize the measurement of the hyperemittance from a pepper-pot method. An example of employing this method is given to analyze an electron beam and it is demonstrated that it can complete the data taking and processing in no more than 2 minutes.

  16. Image processing system for magnetic domain observation

    Microsoft Academic Search

    H. Okuno; H. Murai; Y. Sakaki

    1988-01-01

    This research presents the design and results of an image processing system for static and dynamic observation of magnetic domains. The technique is based on the use of a polarizing microscope, a CCD camera, a frame memory, and a personal computer. Because it is not necessary to use the processed data for real time control, a system was designed in

  17. Bistatic SAR: Signal Processing and Image Formation.

    SciTech Connect

    Wahl, Daniel E.; Yocky, David A.

    2014-10-01

    This report describes the significant processing steps that were used to take the raw recorded digitized signals from the bistatic synthetic aperture RADAR (SAR) hardware built for the NCNS Bistatic SAR project to a final bistatic SAR image. In general, the process steps herein are applicable to bistatic SAR signals that include the direct-path signal and the reflected signal. The steps include preprocessing steps, data extraction to for a phase history, and finally, image format. Various plots and values will be shown at most steps to illustrate the processing for a bistatic COSMO SkyMed collection gathered on June 10, 2013 on Kirtland Air Force Base, New Mexico.

  18. Teaching and Learning Processes in Physical Activity: The Central Problem of Sport Pedagogy.

    ERIC Educational Resources Information Center

    Locke, Lawrence F.

    The use of an established research method, Research on Teacher Effectiveness (RTE), is considered as it may be applied to examine successful teaching methods in physical activities and sports. The basic process of RTE is observing teachers at work with students in the classroom or gymnasium. Research on the relationship between teaching behaviors…

  19. Scaling-up Process-Oriented Guided Inquiry Learning Techniques for Teaching Large Information Systems Courses

    ERIC Educational Resources Information Center

    Trevathan, Jarrod; Myers, Trina; Gray, Heather

    2014-01-01

    Promoting engagement during lectures becomes significantly more challenging as class sizes increase. Therefore, lecturers need to experiment with new teaching methodologies to embolden deep learning outcomes and to develop interpersonal skills amongst students. Process Oriented Guided Inquiry Learning is a teaching approach that uses highly…

  20. The Process of Physics Teaching Assistants' Pedagogical Content Knowledge Development

    ERIC Educational Resources Information Center

    Seung, Eulsun

    2013-01-01

    This study explored the process of physics teaching assistants' (TAs) PCK development in the context of teaching a new undergraduate introductory physics course. "Matter and Interactions" (M&I) has recently adopted a new introductory physics course that focuses on the application of a small number of fundamental physical…

  1. Twitter for Teaching: Can Social Media Be Used to Enhance the Process of Learning?

    ERIC Educational Resources Information Center

    Evans, Chris

    2014-01-01

    Can social media be used to enhance the process of learning by students in higher education? Social media have become widely adopted by students in their personal lives. However, the application of social media to teaching and learning remains to be fully explored. In this study, the use of the social media tool Twitter for teaching was…

  2. Cosmic movement detection using image processing

    NASA Astrophysics Data System (ADS)

    Dhage, Sudhir N.; Mishra, Akassh A.; Patil, Rajesh

    2011-10-01

    Cosmic Movement Detection is concerned with the difficult task of taking the images of sky through high powered telescope or satellite transmitted images and performing image processing in order to discover new galaxies, stars and other cosmic objects or to describe already known galaxies, stars and other cosmic objects. Description meant to describe the type of cosmic object under consideration, whether it's already been recognized previously or not, whether it's moving close to Earth or moving away from Earth. It has several applications astrophysics, astronomy and astroscience. Automating this process to a computer requires the use of various image processing techniques. The method which the present paper describes is based on Doppler Effect of light i.e. red and blue shifting property. Several factors like poor illumination, noise disturbance, viewpoint-dependence, Climate factors, Transmission and Imaging conditions can affect the algorithm working. This paper reports an algorithm for Cosmic Movement Detection using image processing and Doppler Effect of light. The present paper suggests Cosmic Movement can be detected checking the color of the galaxy and it can help in determining whether it's moving towards Earth or its moving away.

  3. A client server model to facilitate creation of a medical image teaching library

    Microsoft Academic Search

    William J. Hornof; Dennis W. Ballance; Paul R. Brenston; James A. Self

    1999-01-01

    A simple and convenient system for indexing and archiving medical images used in teaching was developed. The approach was\\u000a to combine a smart client-side graphical user interface that controlled image size, file format, and keyword structure, and\\u000a communicated with the hospital information system via hypertext markup language, to populate the interface with user selectable\\u000a pull-down menus. The result is a

  4. Fundamental concepts of digital image processing

    SciTech Connect

    Twogood, R.E.

    1983-03-01

    The field of a digital-image processing has experienced dramatic growth and increasingly widespread applicability in recent years. Fortunately, advances in computer technology have kept pace with the rapid growth in volume of image data in these and other applications. Digital image processing has become economical in many fields of research and in industrial and military applications. While each application has requirements unique from the others, all are concerned with faster, cheaper, more accurate, and more extensive computation. The trend is toward real-time and interactive operations, where the user of the system obtains preliminary results within a short enough time that the next decision can be made by the human processor without loss of concentration on the task at hand. An example of this is the obtaining of two-dimensional (2-D) computer-aided tomography (CAT) images. A medical decision might be made while the patient is still under observation rather than days later.

  5. Radiographic image processing for industrial applications

    NASA Astrophysics Data System (ADS)

    Dowling, Martin J.; Kinsella, Timothy E.; Bartels, Keith A.; Light, Glenn M.

    1998-03-01

    One advantage of working with digital images is the opportunity for enhancement. While it is important to preserve the original image, variations can be generated that yield greater understanding of object properties. It is often possible to effectively increase dynamic range, improve contrast in regions of interest, emphasize subtle features, reduce background noise, and provide more robust detection of faults. This paper describes and illustrates some of these processes using real world examples.

  6. Parallel Implementation of Hyperspectral Image Processing Algorithms

    Microsoft Academic Search

    Antonio Plaza; David Valencia; Javier Plaza; Juan S ´ anchez-Testal; Sergio Mu; Soraya Bl

    2006-01-01

    High computing performance of algorithm analysis is essential in many hyperspectral imaging applications, including automatic target recognition for homeland defense and security, risk\\/hazard prevention and monitoring, wild-land fire tracking and biological threat detection. Despite the growing interest in hyperspectral imaging research, only a few efforts devoted to designing and implementing well-conformed parallel processing solutions currently exist in the open literature.

  7. A 3D image processing method for manufacturing process automation

    Microsoft Academic Search

    Dongming Zhao; Songtao Li

    2005-01-01

    Three-dimensional (3D) image processing provides a useful tool for machine vision applications. Typically a 3D vision system is divided into data acquisition, low-level processing, object representation and matching. In this paper, a 3D object pose estimation method is developed for an automated manufacturing assembly process. The experimental results show that the 3D pose estimation method produces accurate geometrical information for

  8. Image gathering and processing - Information and fidelity

    NASA Technical Reports Server (NTRS)

    Huck, F. O.; Fales, C. L.; Halyo, N.; Samms, R. W.; Stacy, K.

    1985-01-01

    In this paper we formulate and use information and fidelity criteria to assess image gathering and processing, combining optical design with image-forming and edge-detection algorithms. The optical design of the image-gathering system revolves around the relationship among sampling passband, spatial response, and signal-to-noise ratio (SNR). Our formulations of information, fidelity, and optimal (Wiener) restoration account for the insufficient sampling (i.e., aliasing) common in image gathering as well as for the blurring and noise that conventional formulations account for. Performance analyses and simulations for ordinary optical-design constraints and random scences indicate that (1) different image-forming algorithms prefer different optical designs; (2) informationally optimized designs maximize the robustness of optimal image restorations and lead to the highest-spatial-frequency channel (relative to the sampling passband) for which edge detection is reliable (if the SNR is sufficiently high); and (3) combining the informationally optimized design with a 3 by 3 lateral-inhibitory image-plane-processing algorithm leads to a spatial-response shape that approximates the optimal edge-detection response of (Marr's model of) human vision and thus reduces the data preprocessing and transmission required for machine vision.

  9. IEEE TRANSACTIONS ON IMAGE PROCESSING 1 The Finite Ridgelet Transform

    E-print Network

    Do, Minh N.

    that the FRIT is more effective than the wavelet transform in approximating and denoising images with straight-linear approximation, image representation, image denoising. I. Introduction Many image processing tasks take advantageIEEE TRANSACTIONS ON IMAGE PROCESSING 1 The Finite Ridgelet Transform for Image Representation Minh

  10. IEEE TRANSACTIONS ON IMAGE PROCESSING 1 The Finite Ridgelet Transform

    E-print Network

    Do, Minh N.

    that the FRIT is more e#ective than the wavelet transform in approximating and denoising images with straight­linear approximation, image representation, image denoising. I. Introduction Many image processing tasks take advantageIEEE TRANSACTIONS ON IMAGE PROCESSING 1 The Finite Ridgelet Transform for Image Representation Minh

  11. Industrial Holography Combined With Image Processing

    NASA Astrophysics Data System (ADS)

    Schorner, J.; Rottenkolber, H.; Roid, W.; Hinsch, K.

    1988-01-01

    Holographic test methods have gained to become a valuable tool for the engineer in research and development. But also in the field of non-destructive quality control holographic test equipment is now accepted for tests within the production line. The producer of aircraft tyres e. g. are using holographic tests to prove the guarantee of their tyres. Together with image processing the whole test cycle is automatisized. The defects within the tyre are found automatically and are listed on an outprint. The power engine industry is using holographic vibration tests for the optimization of their constructions. In the plastics industry tanks, wheels, seats and fans are tested holographically to find the optimum of shape. The automotive industry makes holography a tool for noise reduction. Instant holography and image processing techniques for quantitative analysis have led to an economic application of holographic test methods. New developments of holographic units in combination with image processing are presented.

  12. Image Modeling with Parametric Texture Sources for Design and Analysis of Image Processing Algorithms

    E-print Network

    Girod, Bernd

    Image Modeling with Parametric Texture Sources for Design and Analysis of Image Processing statistical image model is proposed to facilitate the design and analysis of image processing algorithms of the algorithm. For the design and analysis of image processing algorithms, two classic statistical image models

  13. Digital Image Processing The mathematics behind the pretty pictures

    E-print Network

    Breuer, Florian

    Digital Image Processing The mathematics behind the pretty pictures Unlike many other branches endeavor. ­ George Wolberg in a quote equally applicable to computer vision and digital image processing;Image formation / acquisition Image pre-processing Feature extraction Image analysis Computer Vision

  14. Automatic image processing system for beautifying human faces

    Microsoft Academic Search

    Kevin I. Ho; Tung-Shou Chen; Hsing-Yi Su

    2002-01-01

    In this paper, we propose an automatic image processing system to beautify human faces in frontal-parallel color images. Although most of image processing packages provide functions to beautify color images, a few of them, at least based on our knowledge, are specific for beautifying human faces. By using these functions, the processed face images become unreal. For example, they will

  15. Prospective faculty developing understanding of teaching and learning processes in science

    NASA Astrophysics Data System (ADS)

    Pareja, Jose I.

    Historically, teaching has been considered a burden by many academics at institutions of higher education, particularly research scientists. Furthermore, university faculty and prospective faculty often have limited exposure to issues associated with effective teaching and learning. As a result, a series of ineffective teaching and learning strategies are pervasive in university classrooms. This exploratory case study focuses on four biology graduate teaching fellows (BGF) who participated in a National Science Foundation (NSF) GK-12 Program. Such programs were introduced by NSF to enhance the preparation of prospective faculty for their future professional responsibilities. In this particular program, BGF were paired with high school biology teachers (pedagogical mentors) for at least one year. During this yearlong partnership, BGF were involved in a series of activities related to teaching and learning ranging from classroom teaching, tutoring, lesson planning, grading, to participating in professional development conferences and reflecting upon their practices. The purpose of this study was to examine the changes in BGF understanding of teaching and learning processes in science as a function of their pedagogical content knowledge (PCK). In addition, the potential transfer of this knowledge between high school and higher education contexts was investigated. The findings of this study suggest that understanding of teaching and learning processes in science by the BGF changed. Specific aspects of the BGF involvement in the program (such as classroom observations, practice teaching, communicating with mentors, and reflecting upon one's practice) contributed to PCK development. In fact, there is evidence to suggest that constant reflection is critical in the process of change. Concurrently, BGFs enhanced understanding of science teaching and learning processes may be transferable from the high school context to the university context. Future research studies should be designed to explore explicitly this transfer phenomenon.

  16. Teaching the Writing Process through Digital Storytelling in Pre-service Education 

    E-print Network

    Green, Martha Robison

    2012-07-16

    This study used a mixed-methods design to determine instructional strategies that best enhance pre-service teachers’ valuing of digital storytelling as a method to teach the narrative writing process; to consider how digital storytelling increases...

  17. Application of a Conceptual Hydrologic Model in Teaching Hydrologic Processes

    E-print Network

    Aghakouchak, Amir; Habib, Emad

    2010-01-01

    Teaching Hydrologic Processes* AMIR AGHAKOUCHAK, EMAD HABIB Department of Civil Engineering,engineering students who are better inspired by hands-on teachingteaching tools that can serve two main purposes: (1) aid engineering

  18. VIPS: an image processing system for large images

    NASA Astrophysics Data System (ADS)

    Cupitt, John; Martinez, Kirk

    1996-02-01

    This paper describes VIPS (VASARI Image Processing System), an image processing system developed by the authors in the course of the EU-funded projects VASARI (1989-1992) and MARC (1992-1995). VIPS implements a fully demand-driven dataflow image IO (input- output) system. Evaluation of library functions is delayed for as long as possible. When evaluation does occur, all delayed operations evaluate together in a pipeline, requiring no space for storing intermediate images and no unnecessary disc IO. If more than one CPU is available, then VIPS operations will automatically evaluate in parallel, giving an approximately linear speed-up. The evaluation system can be controlled by the application programmer. We have implemented a user-interface for the VIPS library which uses expose events in an X window rather than disc output to drive evaluation. This makes it possible, for example, for the user to rotate an 800 MByte image by 12 degrees and immediately scroll around the result.

  19. Characterization Of A Submicron Image Reversal Process

    NASA Astrophysics Data System (ADS)

    Balch, E. W.; Weaver, S. E.; Saia, R. J.

    1988-01-01

    The complete characterization of a resist imaging process is critical to it's success in a production environment. AZ-5214 resist in image reversal mode offers a single layer process that appears to be viable for submicron processing. It does, however exhibit some unique problems that had to be solved during process development. These are: 1) an extreme sensitivity to processing delays, 2) undercut profiles on reflective metal surfaces and 3) different dry etch characteristics. In this development effort the key advantages of image reversal were: reduced proximity effects, higher resolution, vertical resist profiles, as well as greater exposure latitude. AZ-5214 used in image reversal mode is very sensitive to any change in delay time during the processing sequence. In each case increased delay time causes growth in linewidth. This change in dimension is most significant right after the exposure and bake steps. The problem can be minimized by employing a stabilization time after softbake and exposure. Integrating the reversal bake, flood expose, and develop sequence in a single track is also necessary for consistent dimensional control. Negative tone processing of AZ-5214 resist exhibits undercut profiles at the resist metal interface. Metals with different reflectivity such as aluminum, moly, and Ti/W all demonstrate this problem. The use of anti-reflection layers provide vertical profiles at the expense of increased process complexity. Layers that have shown good results are PE/CVD nitride and PE/CVD oxide. The process characterization data includes: exposure and focus latitude for a range of feature sizes, proximity effect data for dense and isolated features, linewidth uniformity after etch, and dwell time latitude. Also included are the results of daily particle counts over a four month period.

  20. A toolkit for parallel image processing J. M. Squyresy

    E-print Network

    Lumsdaine, Andrew

    A toolkit for parallel image processing J. M. Squyresy A. Lumsdainey R. L. Stevensonz y Department and implementation of a parallel image processing software library (the Parallel Image Processing Toolkit). The Toolkit not only supplies a rich set of image processing routines, it is designed principally

  1. Design considerations of color image processing pipeline for digital cameras

    Microsoft Academic Search

    Wen-Chung Kao; Sheng-Hong Wang; Lien-Yang Chen; Sheng-Yuan Lin

    2006-01-01

    Although many individual image processing steps have been well addressed in the field, very few good image pipeline designs were proposed to integrate these processing stages. In this paper, a new color image processing pipeline (IPP), which processes the image raw data captured from CCD\\/CMOS sensors and converts to the final color with exposure corrected, is presented, it bridges the

  2. Mariner 9-Image processing and products

    USGS Publications Warehouse

    Levinthal, E.C.; Green, W.B.; Cutts, J.A.; Jahelka, E.D.; Johansen, R.A.; Sander, M.J.; Seidman, J.B.; Young, A.T.; Soderblom, L.A.

    1973-01-01

    The purpose of this paper is to describe the system for the display, processing, and production of image-data products created to support the Mariner 9 Television Experiment. Of necessity, the system was large in order to respond to the needs of a large team of scientists with a broad scope of experimental objectives. The desire to generate processed data products as rapidly as possible to take advantage of adaptive planning during the mission, coupled with the complexities introduced by the nature of the vidicon camera, greatly increased the scale of the ground-image processing effort. This paper describes the systems that carried out the processes and delivered the products necessary for real-time and near-real-time analyses. References are made to the computer algorithms used for the, different levels of decalibration and analysis. ?? 1973.

  3. FITSH: Software Package for Image Processing

    NASA Astrophysics Data System (ADS)

    Pál, András

    2011-11-01

    FITSH provides a standalone environment for analysis of data acquired by imaging astronomical detectors. The package provides utilities both for the full pipeline of subsequent related data processing steps (including image calibration, astrometry, source identification, photometry, differential analysis, low-level arithmetic operations, multiple image combinations, spatial transformations and interpolations, etc.) and for aiding the interpretation of the (mainly photometric and/or astrometric) results. The package also features a consistent implementation of photometry based on image subtraction, point spread function fitting and aperture photometry and provides easy-to-use interfaces for comparisons and for picking the most suitable method for a particular problem. The utilities in the package are built on the top of the commonly used UNIX/POSIX shells (hence the name of the package), therefore both frequently used and well-documented tools for such environments can be exploited and managing massive amount of data is rather convenient.

  4. MATHEMATICAL METHODS IN MEDICAL IMAGE PROCESSING

    PubMed Central

    ANGENENT, SIGURD; PICHON, ERIC; TANNENBAUM, ALLEN

    2013-01-01

    In this paper, we describe some central mathematical problems in medical imaging. The subject has been undergoing rapid changes driven by better hardware and software. Much of the software is based on novel methods utilizing geometric partial differential equations in conjunction with standard signal/image processing techniques as well as computer graphics facilitating man/machine interactions. As part of this enterprise, researchers have been trying to base biomedical engineering principles on rigorous mathematical foundations for the development of software methods to be integrated into complete therapy delivery systems. These systems support the more effective delivery of many image-guided procedures such as radiation therapy, biopsy, and minimally invasive surgery. We will show how mathematics may impact some of the main problems in this area, including image enhancement, registration, and segmentation. PMID:23645963

  5. Enhanced neutron imaging detector using optical processing

    SciTech Connect

    Hutchinson, D.P.; McElhaney, S.A.

    1992-01-01

    Existing neutron imaging detectors have limited count rates due to inherent property and electronic limitations. The popular multiwire proportional counter is qualified by gas recombination to a count rate of less than 10{sup 5} n/s over the entire array and the neutron Anger camera, even though improved with new fiber optic encoding methods, can only achieve 10{sup 6} cps over a limited array. We present a preliminary design for a new type of neutron imaging detector with a resolution of 2--5 mm and a count rate capability of 10{sup 6} cps pixel element. We propose to combine optical and electronic processing to economically increase the throughput of advanced detector systems while simplifying computing requirements. By placing a scintillator screen ahead of an optical image processor followed by a detector array, a high throughput imaging detector may be constructed.

  6. Enhanced neutron imaging detector using optical processing

    SciTech Connect

    Hutchinson, D.P.; McElhaney, S.A.

    1992-08-01

    Existing neutron imaging detectors have limited count rates due to inherent property and electronic limitations. The popular multiwire proportional counter is qualified by gas recombination to a count rate of less than 10{sup 5} n/s over the entire array and the neutron Anger camera, even though improved with new fiber optic encoding methods, can only achieve 10{sup 6} cps over a limited array. We present a preliminary design for a new type of neutron imaging detector with a resolution of 2--5 mm and a count rate capability of 10{sup 6} cps pixel element. We propose to combine optical and electronic processing to economically increase the throughput of advanced detector systems while simplifying computing requirements. By placing a scintillator screen ahead of an optical image processor followed by a detector array, a high throughput imaging detector may be constructed.

  7. Image Processing for Galaxy Ellipticity Analysis

    NASA Astrophysics Data System (ADS)

    Stankus, Paul

    2015-04-01

    Shape analysis of statistically large samples of galaxy images can be used to reveal the imprint of weak gravitational lensing by dark matter distributions. As new, large-scale surveys expand the potential catalog, galaxy shape analysis suffers the (coupled) problems of high noise and uncertainty in the prior morphology. We investigate a new image processing technique to help mitigate these problems, in which repeated auto-correlations and auto-convolutions are employed to push the true shape toward a universal (Gaussian) attractor while relatively suppressing uncorrelated pixel noise. The goal is reliable reconstruction of original image moments, independent of image shape. First test evaluations of the technique on small control samples will be presented, and future applicability discussed. Supported by the US-DOE.

  8. Web-based document image processing

    NASA Astrophysics Data System (ADS)

    Walker, Frank L.; Thoma, George R.

    1999-12-01

    Increasing numbers of research libraries are turning to the Internet for electron interlibrary loan and for document delivery to patrons. This has been made possible through the widespread adoption of software such as Ariel and DocView. Ariel, a product of the Research Libraries Group, converts paper-based documents to monochrome bitmapped images, and delivers them over the Internet. The National Library of Medicine's DocView is primarily designed for library patrons are beginning to reap the benefits of this new technology, barriers exist, e.g., differences in image file format, that lead to difficulties in the use of library document information. To research how to overcome such barriers, the Communications Engineering Branch of the Lister Hill National Center for Biomedical Communications, an R and D division of NLM, has developed a web site called the DocMorph Server. This is part of an ongoing intramural R and D program in document imaging that has spanned many aspects of electronic document conversion and preservation, Internet document transmission and document usage. The DocMorph Server Web site is designed to fill two roles. First, in a role that will benefit both libraries and their patrons, it allows Internet users to upload scanned image files for conversion to alternative formats, thereby enabling wider delivery and easier usage of library document information. Second, the DocMorph Server provides the design team an active test bed for evaluating the effectiveness and utility of new document image processing algorithms and functions, so that they may be evaluated for possible inclusion in other image processing software products being developed at NLM or elsewhere. This paper describes the design of the prototype DocMorph Server and the image processing functions being implemented on it.

  9. Stochastic processes, estimation theory and image enhancement

    NASA Technical Reports Server (NTRS)

    Assefi, T.

    1978-01-01

    An introductory account of stochastic processes, estimation theory, and image enhancement is presented. The book is primarily intended for first-year graduate students and practicing engineers and scientists whose work requires an acquaintance with the theory. Fundamental concepts of probability were reviewed that are required to support the main topics. The appendices discuss the remaining mathematical background.

  10. Spectral image processing in real-time

    Microsoft Academic Search

    Matthias F. Carlsohn

    2006-01-01

    The fields of classical image processing and optical spectroscopy developed independently since a long time. While the first subject deals with pictorial information that uses the description of material by their surfaces in terms of brightness, texture and color depending on the illumination in the two dimensional field of view of the optics, the second one classifies usually material properties

  11. Image processing of biological signals with computers

    Microsoft Academic Search

    P. K. Singhal; V. R. Singh

    1995-01-01

    Image processing, with the help of digital computers, is gaining importance, day by day, especially in the medical fields. Diagnostic data from the human body is complex in nature and becomes difficult to analyse. Specialists use different techniques to get a clear picture of the human anatomy, but due to complexity of structure, it has been always difficult to interpret

  12. Talbot Carrier Image Processing Of Birefringence Effect

    NASA Astrophysics Data System (ADS)

    Bin, Du; Jinghong, Tu; Zhu, Xu

    1988-12-01

    In Talbot effect, the change of the refractive index along the direction perpendicular to grating lines causes the change of fringes. In the other hand, the intensity of fringes is relative to the principal refractive index and its direction of birefringent object. This paper analyzes the two kinds of Talbot effect mentioned above. The result obtained is suitable for image processing.

  13. Review of biomedical signal and image processing

    PubMed Central

    2013-01-01

    This article is a review of the book “Biomedical Signal and Image Processing” by Kayvan Najarian and Robert Splinter, which is published by CRC Press, Taylor & Francis Group. It will evaluate the contents of the book and discuss its suitability as a textbook, while mentioning highlights of the book, and providing comparison with other textbooks.

  14. Comparative Study of Automatic Acquisition Methods of Image Processing Procedures

    Microsoft Academic Search

    Toshihiro Hamada; Akinobu Shimizu; Toyofumi Saito; Jun-ichi Hasegawa; Jun-ichiro Toriwaki

    2000-01-01

    Two image processing expert systems, IMPRESS[1] and IMPRESS-Pro[2] have already been developed by our research group. These systems automatically generate image processing\\u000a procedures from sample pairs of an image and a sketch representing an object to be extracted from it. Automatic acquisition\\u000a of the image processing procedure is a kind of knowledge discovery process, because an image processing procedure which

  15. Teaching the Writing Process through Full Dyadic Writing.

    ERIC Educational Resources Information Center

    Aghbar, Ali-Asghar; Alam, Mohammed

    A study investigated the effectiveness of full dyadic writing as a technique for teaching writing to students of English as a Second Language (ESL). Subjects were 31 college students of diverse cultural backgrounds enrolled in ESL sections of freshman English. Each chose a partner with a different native language with whom to write two essays, the…

  16. Teaching Higher Level Mental Processes with Motion Media

    ERIC Educational Resources Information Center

    Brooke, Martha L.; And Others

    1978-01-01

    A motion picture instructional unit for students of cardiac physiology was developed to investigate the feasibility of teaching rules and problem solving in a motion medium. Student achievement was documented through a written prerequisite test, a videotaped pretest, and the film's posttest. The study confirmed the potential of motion media for…

  17. Progress in Top Surface Imaging Process

    NASA Astrophysics Data System (ADS)

    Satou, Isao; Watanabe, Manabu; Watanabe, Hiroyuki; Itani, Toshiro

    2000-12-01

    A top surface imaging (TSI) process is one of the approaches for 0.10 ?m or smaller pattern fabrication using photolithography. We have been evaluating the different types of bilayer resist processes, such as a bilayer silylation process, a bilayer process using a Si-containing resist and an improved silylation process which applies vapor phase silylation treatment after alkaline wet development (SILYAL). In this paper, we review the current status of these processes, specifically focusing on the progress in the bilayer silylation process. In addition, we evaluated the critical dimension (CD) controllability of the bilayer silylation process for 193 nm lithography and found that this process can already be compared with the wet-development single-layer resist process. We found that the resist stripping technique, which has been the main problem of the TSI process, is practically feasible with the application of a plasma ashing treatment followed by a subsequent wet cleaning using a fluorine-containing chemical stripper. We also evaluated the characteristic properties using a 157 nm frame exposure tool and confirmed that this process is extendible to 157 nm lithography.

  18. [Digital thoracic radiology: devices, image processing, limits].

    PubMed

    Frija, J; de Géry, S; Lallouet, F; Guermazi, A; Zagdanski, A M; De Kerviler, E

    2001-09-01

    In a first part, the different techniques of digital thoracic radiography are described. Since computed radiography with phosphore plates are the most commercialized it is more emphasized. But the other detectors are also described, as the drum coated with selenium and the direct digital radiography with selenium detectors. The other detectors are also studied in particular indirect flat panels detectors and the system with four high resolution CCD cameras. In a second step the most important image processing are discussed: the gradation curves, the unsharp mask processing, the system MUSICA, the dynamic range compression or reduction, the soustraction with dual energy. In the last part the advantages and the drawbacks of computed thoracic radiography are emphasized. The most important are the almost constant good quality of the pictures and the possibilities of image processing. PMID:11567193

  19. Photogrammetrie GZ Exercise 3: Image Processing with Matlab

    E-print Network

    Giger, Christine

    Photogrammetrie GZ Exercise 3: Image Processing with Matlab Institut für Geodäsie und to investigate and process digital images . Exercises 1. Pick (a) greyscale image, and (b) a color image. Using.photogrammetry.ethz.ch Zürich, 12.04.2010 Goal Images may be considered as matrices whose elements are the pixel values

  20. UV image processing to detect diffuse clouds

    NASA Astrophysics Data System (ADS)

    Armengot, M.; Gómez de Castro, A. I.; López-Santiago, J.; Sánchez-Doreste, N.

    2015-05-01

    The presence of diffuse clouds along the Galaxy is under consideration as far as they are related to stellar formation and their physical properties are not well understood. The signal received from most of these structures in the UV images is minimal compared to the point sources. The presence of noise in these images makes hard the analysis because the Signal-to-Noise ratio is proportionally much higher in these areas. However, the digital processing of the images shows that it is possible to enhance and target these clouds. Typically, this kind of treatment is done on purpose for specific research areas and the Astrophysicist's work depends on the computer tools and its possibilities for enhancing a particular area based on a prior knowledge. Automating this step is the goal of our work to make easier the study of these structures in UV images. In particular we have used the GALEX survey images in the aim of learning to automatically detect such clouds and be able of unsupervised detection and graphic enhancement to log them. Our experiments show the existence of some evidences in the UV images that allow the systematic computing and open the chance to generalize the algorithm to find these structures in universe areas where they have not been recorded yet.

  1. Images and the History Lecture: Teaching the History Channel Generation

    ERIC Educational Resources Information Center

    Coohill, Joseph

    2006-01-01

    No sensible historian would argue that using images in history lectures is a pedagogical waste of time. All people seem to accept the idea that visual elements (paintings, photographs, films, maps, charts, etc.) enhance the retention of historical information and add greatly to student enjoyment of the subject. However, there seems to be very…

  2. Soup Sandwiches and Box Cars: Using Images To Teach Organization.

    ERIC Educational Resources Information Center

    Danis, M. Francine

    Students' writing can benefit not only from pedagogical strategies but also from imagistic thinking. Writing instructors should use images and metaphors to help students heighten their perception of themselves as organizers, to assist them in getting from one place to another within their material, and to offer analogies for the shape of the texts…

  3. Architecture for processing image algebra operations

    NASA Astrophysics Data System (ADS)

    Coffield, Patrick C.

    1992-06-01

    The proposed architecture is a logical design specifically for image algebra and other matrix related operations. The design is a fine grain SIMD concept consisting of three tightly coupled components: a spatial configuration processor, a weighting processor (point-wise), and an accumulation processor (point-wise). The flow of data and image processing operations are directed by a control buffer and pipe lined to each of the three processing components. The low-level abstraction of the proposed computational system is founded on the mathematical principle of discrete convolution and its geometrical decomposition. This geometrical decomposition combined with array processing requires redefining specific algebraic operations and reorganizing their order of parsing in the abstract syntax. The logical data flow of such an abstraction leads to a division of operations, those defined by point-wise operations, the others in terms of spatial configuration. The effect of this particular decomposition allows convolution type operations to be computed strictly as a function of the number of elements in the template (mask, filter, etc.) instead of the number of picture elements in the image. The potential utility of this architectural design lies in its ability to provide order statistic filtering and all the arithmetic and logic operations of the image algebra's generalized matrix product. The generalized matrix product is the most powerful fundamental formulation in the algebra, thus allowing a wide range of applications.

  4. Image processing with JPEG2000 coders

    NASA Astrophysics Data System (ADS)

    ?liwi?ski, Przemys?aw; Smutnicki, Czes?aw; Chora?yczewski, Artur

    2008-04-01

    In the note, several wavelet-based image processing algorithms are presented. Denoising algorithm is derived from the Donoho's thresholding. Rescaling algorithm reuses sub-division scheme of the Sweldens' lifting and a sensor linearization procedure exploiting system identification algorithms developed for nonlinear dynamic systems. Proposed autofocus algorithm is a passive one, works in wavelet domain and relies on properties of lens transfer function. The common advantage of the algorithms is that they can easily be implemented within the JPEG2000 image compression standard encoder, offering simplification of the final circuitry (or the software package) and the reduction of the power consumption (program size, respectively) when compared to solutions based on separate components.

  5. EOS image data processing system definition study

    NASA Technical Reports Server (NTRS)

    Gilbert, J.; Honikman, T.; Mcmahon, E.; Miller, E.; Pietrzak, L.; Yorsz, W.

    1973-01-01

    The Image Processing System (IPS) requirements and configuration are defined for NASA-sponsored advanced technology Earth Observatory System (EOS). The scope included investigation and definition of IPS operational, functional, and product requirements considering overall system constraints and interfaces (sensor, etc.) The scope also included investigation of the technical feasibility and definition of a point design reflecting system requirements. The design phase required a survey of present and projected technology related to general and special-purpose processors, high-density digital tape recorders, and image recorders.

  6. 1216 TRANSACTIONS IMAGE PROCESSING, JULY Sonar Image Segmentation Using an Unsupervised

    E-print Network

    Mignotte, Max

    1216 TRANSACTIONS IMAGE PROCESSING, JULY Sonar Image Segmentation Using an Unsupervised concerned hierarchical Markov random field (MRF) models and their application sonar image segmentation. We present original hierarchical segmentation procedure devoted images given high­resolution sonar. sonar

  7. The constructive use of images in medical teaching: a literature review

    PubMed Central

    Norris, Elizabeth M

    2012-01-01

    This literature review illustrates the various ways images are used in teaching and the evidence appertaining to it and advice regarding permissions and use. Four databases were searched, 23 papers were retained out of 135 abstracts found for the study. Images are frequently used to motivate an audience to listen to a lecture or to note key medical findings. Images can promote observation skills when linked with learning outcomes, but the timing and relevance of the images is important – it appears they must be congruent with the dialogue. Student reflection can be encouraged by asking students to actually draw their own impressions of a course as an integral part of course feedback. Careful structured use of images improve attention, cognition, reflection and possibly memory retention. PMID:22666530

  8. Publish date: 06/27/2011 ECE 4367: Image Processing

    E-print Network

    Gelfond, Michael

    Publish date: 06/27/2011 ECE 4367: Image Processing Credit / Contact hours: 3 / 3 Course Processing, 3rd Edition, Prentice Hall, 2008. Catalog description: Imaging fundamentals. Linear operations be changed by digital image processing 2. Enhance images in the spatial and frequency domain. 3. Apply

  9. TRAINING PERIOD 2013 Image processing for space applications

    E-print Network

    Dobigeon, Nicolas

    TRAINING PERIOD 2013 Image processing for space applications Training title: Monitoring of SPOT6 imaging performances. Field: Operations and R&D Speciality: Image processing Subject Astrium has built. The trainee shall have both a solid image processing background and computer programming skills (Matlab and

  10. Image Processing Start simple: look at small windows

    E-print Network

    Oliensis, John

    Image Processing · Goal ­ Start simple: look at small windows ­ Identify useful image structures just using info at boundaries Reconstruction Elder: IJCV 34(2/3), 97­122 (1999) #12;Image Processing · Example 1 ­ Emphasize signal; suppress noise #12;Image Processing · Goal ­ Small windows ­ Identify useful

  11. Using the medical image processing package, ImageJ, for astronomy

    E-print Network

    Jennifer L. West; Ian D. Cameron

    2006-11-21

    At the most fundamental level, all digital images are just large arrays of numbers that can easily be manipulated by computer software. Specialized digital imaging software packages often use routines common to many different applications and fields of study. The freely available, platform independent, image-processing package ImageJ has many such functions. We highlight ImageJ's capabilities by presenting methods of processing sequences of images to produce a star trail image and a single high quality planetary image.

  12. Vector processing enhancements for real-time image analysis.

    SciTech Connect

    Shoaf, S.; APS Engineering Support Division

    2008-01-01

    A real-time image analysis system was developed for beam imaging diagnostics. An Apple Power Mac G5 with an Active Silicon LFG frame grabber was used to capture video images that were processed and analyzed. Software routines were created to utilize vector-processing hardware to reduce the time to process images as compared to conventional methods. These improvements allow for more advanced image processing diagnostics to be performed in real time.

  13. The IPOL Initiative: Publishing and Testing Algorithms on Line for Reproducible Research in Image Processing

    E-print Network

    Paris-Sud XI, Université de

    Image Processing On Line (IPOL) publishes image processing and image analysis algorithms, described on the development of image science. Keywords: reproducible research, image processing, implementation, web interface 1. Why Image Processing on Line? For computational sciences, detailed algorithms and implementations

  14. Satellite image maps are an inexpensive source of geologic and remote sensing teaching aids

    SciTech Connect

    Gunther, F.J.

    1985-01-01

    Inexpensive, even free, printed copies of images and image maps provide Earth Science, Geology, and Remote Sensing teachers with an alternative to expensive photoproducts for classroom and student use. Printed images and image maps are available free, or at costs ranging from $3 to $20. In addition to urban and agricultural features, images and image maps in the author's collection display features suitable for teaching a variety of topics. Examples are: 1) linear features (lineaments) for structural mapping (i.e. San Francisco, Grand Canyon, Medicine Bow River, Southern New England Mosaic, The Adirondacks Mosaic); 2) coastal erosion and deposition; 3) formation and outcrop mapping (Dry Rock Cheyene River, Medicine Bow River, Grand Canyon); 4) glaciers and sea ice; and 5) volcanic features. Almost all image maps show fluvial and lacustrine features. Printed images and image maps may be ordered from many sources: USGS Map Distribution Centers; the American Society of Photogrammetry and Remote Sensing, Grand Canyon National Park, and The World Bank map outlet. Free maps and printed images are often distributed by exhibitors at remote sensing conferences.

  15. Using Hollywood Movies as a Supplementary Tool to Teach Manufacturing Processes

    NSDL National Science Digital Library

    Pei, Z.J.

    Introductory courses on manufacturing processes are difficult to teach and it is challenging to deliver the information in an interesting or entertaining way. As one of the attempts to promote students learning, Hollywood movies have been used as a supplementary tool to teach such a course at Kansas State University. This paper presents the experience of such attempt. Examples of using Hollywood movies are presented and discussed. Students feedback and comments are also provided.

  16. 292 IEEE TRANSACTIONS ON IMAGE PROCESSING, VOL. 7, NO. 3, MARCH 1998 A Volterra Type Model for Image Processing

    E-print Network

    Cottet, Georges-Henri

    292 IEEE TRANSACTIONS ON IMAGE PROCESSING, VOL. 7, NO. 3, MARCH 1998 A Volterra Type Model for Image Processing Georges Henri Cottet and Mohamed El Ayyadi Abstract--We present a class of time for multiscale image processing. For other recent works on nonlinear diffusion for image filtering, we refer

  17. Parallel processing of spaceborne imaging radar data

    Microsoft Academic Search

    Craig Miller; David G. Payne; Thanh N. Phung; Herb Siegel; Roy Williams

    1995-01-01

    We discuss the results of a collaborative project on parallel processing of Synthetic Aperture Radar (SAR) data, carried out between the NASA\\/Jet Propulsion Laboratory (JPL), the California Institute of Technology (Caltech) and Intel Scalable Systems Division (SSD). Through this collaborative effort, we have successfully parallelized the most compute-intensive SAR correlator phase of the Spaceborne Shuttle Imaging Radar-C\\/X-Band SAR (SIR-C\\/X-SAR) code,

  18. Novel image processing approach to detect malaria

    NASA Astrophysics Data System (ADS)

    Mas, David; Ferrer, Belen; Cojoc, Dan; Finaurini, Sara; Mico, Vicente; Garcia, Javier; Zalevsky, Zeev

    2015-09-01

    In this paper we present a novel image processing algorithm providing good preliminary capabilities for in vitro detection of malaria. The proposed concept is based upon analysis of the temporal variation of each pixel. Changes in dark pixels mean that inter cellular activity happened, indicating the presence of the malaria parasite inside the cell. Preliminary experimental results involving analysis of red blood cells being either healthy or infected with malaria parasites, validated the potential benefit of the proposed numerical approach.

  19. Sorting Olive Batches for the Milling Process Using Image Processing.

    PubMed

    Puerto, Daniel Aguilera; Gila, Diego Manuel Martínez; García, Javier Gámez; Ortega, Juan Gómez

    2015-01-01

    The quality of virgin olive oil obtained in the milling process is directly bound to the characteristics of the olives. Hence, the correct classification of the different incoming olive batches is crucial to reach the maximum quality of the oil. The aim of this work is to provide an automatic inspection system, based on computer vision, and to classify automatically different batches of olives entering the milling process. The classification is based on the differentiation between ground and tree olives. For this purpose, three different species have been studied (Picudo, Picual and Hojiblanco). The samples have been obtained by picking the olives directly from the tree or from the ground. The feature vector of the samples has been obtained on the basis of the olive image histograms. Moreover, different image preprocessing has been employed, and two classification techniques have been used: these are discriminant analysis and neural networks. The proposed methodology has been validated successfully, obtaining good classification results. PMID:26147729

  20. Digital image processing for information extraction.

    NASA Technical Reports Server (NTRS)

    Billingsley, F. C.

    1973-01-01

    The modern digital computer has made practical image processing techniques for handling nonlinear operations in both the geometrical and the intensity domains, various types of nonuniform noise cleanup, and the numerical analysis of pictures. An initial requirement is that a number of anomalies caused by the camera (e.g., geometric distortion, MTF roll-off, vignetting, and nonuniform intensity response) must be taken into account or removed to avoid their interference with the information extraction process. Examples illustrating these operations are discussed along with computer techniques used to emphasize details, perform analyses, classify materials by multivariate analysis, detect temporal differences, and aid in human interpretation of photos.

  1. Application of Image Processing Technology in Paper Currency Classification System

    Microsoft Academic Search

    Wenhong Li; Yonggang Li; Kexue Luo

    2008-01-01

    The processing effect and recognition accuracy of RMB is an important part in the paper currency classification system. According to the characteristics of RMB images, the paper uses the theory of digital image processing and pattern recognition to put forward the method of RMB image processing based on the processing and recognition of the part of the RMB serial numbers,

  2. Whole slide imaging: uses and limitations for surgical pathology and teaching.

    PubMed

    Boyce, B F

    2015-07-01

    Advances in computer and software technology and in the quality of images produced by digital cameras together with development of robotic devices that can take glass histology slides from a cassette holding many slides and place them in a conventional microscope for electronic scanning have facilitated the development of whole slide imaging (WSI) systems during the past decade. Anatomic pathologists now have opportunities to test the utility of WSI systems for diagnostic, teaching and research purposes and to determine their limitations. Uses include rendering primary diagnoses from scanned hematoxylin and eosin stained tissues on slides, reviewing frozen section or routine slides from remote locations for interpretation or consultation. Also, WSI can replace physical storage of glass slides with digital images, storing images of slides from outside institutions, presenting slides at clinical or research conferences, teaching residents and medical students, and storing fluorescence images without fading or quenching of the fluorescence signal. Limitations include the high costs of the scanners, maintenance contracts and IT support, storage of digital files and pathologists' lack of familiarity with the technology. Costs are falling as more devices and systems are sold and cloud storage costs drop. Pathologist familiarity with the technology will grow as more institutions purchase WSI systems. The technology holds great promise for the future of anatomic pathology. PMID:25901738

  3. ''Virtual Welding,'' a new aid for teaching Manufacturing Process Engineering

    NASA Astrophysics Data System (ADS)

    Portela, José M.; Huerta, María M.; Pastor, Andrés; Álvarez, Miguel; Sánchez-Carrilero, Manuel

    2009-11-01

    Overcrowding in the classroom is a serious problem in universities, particularly in specialties that require a certain type of teaching practice. These practices often require expenditure on consumables and a space large enough to hold the necessary materials and the materials that have already been used. Apart from the budget, another problem concerns the attention paid to each student. The use of simulation systems in the early learning stages of the welding technique can prove very beneficial thanks to error detection functions installed in the system, which provide the student with feedbach during the execution of the practice session, and the significant savings in both consumables and energy.

  4. Image Processing Using ImageJ In this assignment, we use the built-in functions in ImageJ to process images. ImageJ is rewritten in Java and

    E-print Network

    Jiang, Hao

    1 Image Processing Using ImageJ In this assignment, we use the built-in functions in ImageJ to process images. ImageJ is rewritten in Java and can be extended with Java plugins. I. INSTALLATION the menu Process|Smooth. Apply the operation 3 times. Select a line in the image, write down

  5. The Guidance Role of the Instructor in the Teaching and Learning Process

    ERIC Educational Resources Information Center

    Alutu, Azuka N. G.

    2006-01-01

    This study examines the guidance role of the instructor in the teaching and learning process. The paper x-rays the need for the learners to be consciously guided by their teachers as this facilitates and complements the learning process. Gagne's theory of conditions of learning, phases of learning and model for design of instruction was adopted to…

  6. The Arrangement of Students' Extracurricular Piano Practice Process with the Asynchronous Distance Piano Teaching Method

    ERIC Educational Resources Information Center

    Karahan, Ahmet Suat

    2015-01-01

    That the students do their extracurricular piano practices in the direction of the teacher's warnings is a key factor in achieving success in the teaching-learning process. However, the teachers cannot adequately control the students' extracurricular practices in the process of traditional piano education. Under the influence of this lack of…

  7. Teaching modelling of chemical processes in higher education using multi-media

    Microsoft Academic Search

    L. Urbas; B. Gauss; Ch. Hausmanns; G. Wozny

    2003-01-01

    Together with partners from three other German universities we are developing a multimedia learning system for the instruction of process engineering students. This paper focuses on a single module of that system which supports students in learning the task of stationary process modelling. As a basic example to teach systematic modelling we have selected a single distillation tray. On the

  8. The Design Studio as Teaching/Learning Medium--A Process-Based Approach

    ERIC Educational Resources Information Center

    Ozturk, Maya N.; Turkkan, Elif E.

    2006-01-01

    This article discusses a design studio teaching experience exploring the design process itself as a methodological tool. We consider the structure of important phases of the process that contain different levels of design thinking: conception, function and practical knowledge as well as the transitions from inception to construction. We show how…

  9. FITSH- a software package for image processing

    NASA Astrophysics Data System (ADS)

    Pál, András.

    2012-04-01

    In this paper we describe the main features of the software package named FITSH, intended to provide a standalone environment for analysis of data acquired by imaging astronomical detectors. The package both provides utilities for the full pipeline of subsequent related data-processing steps (including image calibration, astrometry, source identification, photometry, differential analysis, low-level arithmetic operations, multiple-image combinations, spatial transformations and interpolations) and aids the interpretation of the (mainly photometric and/or astrometric) results. The package also features a consistent implementation of photometry based on image subtraction, point spread function fitting and aperture photometry and provides easy-to-use interfaces for comparisons and for picking the most suitable method for a particular problem. The set of utilities found in this package is built on top of the commonly used UNIX/POSIX shells (hence the name of the package); therefore, both frequently used and well-documented tools for such environments can be exploited and managing a massive amount of data is rather convenient.

  10. IMAGESERVER: A SYSTEM FOR A DISTRIBUTED IMAGE PROCESSING APPLICATION BASED ON JAVA ADVANCED IMAGING

    Microsoft Academic Search

    Xinwen YU; Seishi Ninomiya; Matthew Laurenson; Zuorui Shen

    2003-01-01

    Recently, imaging has become an increasingly important subject in many fields, as well as an important field in networking computing since the release of Java Advanced Imaging (JAI) by Sun Microsystems. An ImageServer was developed using Java RMI and JAI technology. This ImageServer provides common functions for image processing which are very convenient for distributed imaging. In addition to the

  11. Image processing challenges in weak gravitational lensing

    E-print Network

    Amara, Adam

    2011-01-01

    The field of weak gravitational lensing, which measures the basic properties of the Universe by studying the way that light from distant galaxies is perturbed as it travels towards us, is a very active field in astronomy. This short article presents a broad overview of the field, including some of the important questions that cosmologists are trying to address, such as understanding the nature of dark energy and dark matter. To do this, there is an increasing feeling within the weak lensing community that other disciplines, such as computer science, machine learning, signal processing and image processing, have the expertise that would bring enormous advantage if channelled into lensing studies. To illustrate this point, the article below outlines some of the key steps in a weak lensing analysis chain. The challenges are distinct at each step, but each could benefit from ideas developed in the signal processing domain. This article also gives a brief overview of current and planned lensing experiments that wi...

  12. Reconfigurable multiprocessor structure for image processing

    SciTech Connect

    Van Eycken, L.

    1983-01-01

    Summary form only given, as follows: Most of today's imaging systems can be divided into two classes. On one hand, one finds the powerful machines well suited for the academic environment but impractical for industrial applications. On the other hand, one has simple specific peripheral hardware for image processing. The disadvantage of this group is the incapability of extension towards more complex processing. To fill the gap between these groups the author designed a modular multiprocessor structure, based on a timeshared bus. The primary characteristics are: (1) extensibility>modules can be added without hardware changes; (2) reconfigurability>the actual processing structure is totally software controlled; (3) multiprocessor structure>modules can work in parallel or in pipeline; and (4) optimal use of the bus-a new bus arbitration on every bus cycle prevents the modules from keeping the bus occupied when they are not using the bus. Starting from this design philosophy, a bus concept is developed, and the actual realization of the bus and some modules are described, together with the related algorithms.

  13. An Adaptive Finite Element Method for Large Scale Image Processing

    E-print Network

    Preusser, Tobias

    An Adaptive Finite Element Method for Large Scale Image Processing T. Preußer and M. Rumpf Institut. On the other hand, compression is an important topic in image process- ing as well. Here a method is presented is presented. 1 Introduction Nonlinear diffusion methods in image processing have been known for a long time

  14. General Adaptive Neighborhood Image Processing Part II: Practical Application Examples

    E-print Network

    Paris-Sud XI, Université de

    General Adaptive Neighborhood Image Processing Part II: Practical Application Examples JOHAN-called General Adaptive Neighborhood Image Processing (GANIP) approach is presented in a two parts paper dealing, theoretically introduced in Part I [20], allows the building of new image processing transformations using

  15. Hindawi Publishing Corporation EURASIP Journal on Image and Video Processing

    E-print Network

    Plataniotis, Konstantinos N.

    Hindawi Publishing Corporation EURASIP Journal on Image and Video Processing Volume 2008, Article ID 356781, 3 pages doi:10.1155/2008/356781 Editorial Color in Image and Video Processing Alain Tr of color image processing due to the utilization of color vision, colorimetry, and color appearance

  16. RESEARCH ON COMPUTER-ASSISTED GENERATION OF IMAGE PROCESSING ALGORITHMS

    Microsoft Academic Search

    Donald G. Bailey

    1988-01-01

    To develop an algorithm for an image processing task a person normally should have both extensive experience in image processing and detailed knowledge of the task. Frequently those who need such algorithms have the detailed problem knowledge but not the image processing experience. We are investigating the extent to which the necessary emrience can be incornrated into . - a

  17. Adaptive Computing in NASA Multi-Spectral Image Processing

    E-print Network

    Chang, Mark L.

    Adaptive Computing in NASA Multi-Spectral Image Processing Master's Thesis December, 1999 Mark L;Abstract Typical NASA applications have image processing tasks that require high performance presents our work in utilizing adaptive computing techniques to accelerate a NASA image processing

  18. The color image processing technology of the milk somatic cells

    Microsoft Academic Search

    Yuedong Wang; Heru Xue

    2010-01-01

    Image processing is widely applied in the field of the biology and medicine domain, however, the study of the milk somatic cell image processing technology is a new topic currently. This paper carries on the pre-processing to the milk somatic cell images firstly. Then in the foundation of the selection of the color space and the analysis based on the

  19. ATM experiment S-056 image processing requirements definition

    NASA Technical Reports Server (NTRS)

    1972-01-01

    A plan is presented for satisfying the image data processing needs of the S-056 Apollo Telescope Mount experiment. The report is based on information gathered from related technical publications, consultation with numerous image processing experts, and on the experience that was in working on related image processing tasks over a two-year period.

  20. Image processing coprocessor implementation for Xilinx XC6000 series FPGAs

    Microsoft Academic Search

    Khaled Benkrid; K. Alotaibi; Danny Crookes; A. Bouridane; A. Benkrid

    1999-01-01

    This paper presents an Image Processing Coprocessor implementation for XC6000 series FPGAs. The FPGA acts as a semi-autonomous abstract coprocessor carrying out image processing operational independently. This paper outlines the main structure of the image processing coprocessor in addition to its high level programming environment. The environment provides a library of very high level, parametrized architecture descriptions which are scaleable

  1. Using Image Processing to Determine Emphysema Severity

    NASA Astrophysics Data System (ADS)

    McKenzie, Alexander; Sadun, Alberto

    2010-10-01

    Currently X-rays and computerized tomography (CT) scans are used to detect emphysema, but other tests are required to accurately quantify the amount of lung that has been affected by the disease. These images clearly show if a patient has emphysema, but are unable by visual scan alone, to quantify the degree of the disease, as it presents as subtle, dark spots on the lung. Our goal is to use these CT scans to accurately diagnose and determine emphysema severity levels in patients. This will be accomplished by performing several different analyses of CT scan images of several patients representing a wide range of severity of the disease. In addition to analyzing the original CT data, this process will convert the data to one and two bit images and will then examine the deviation from a normal distribution curve to determine skewness. Our preliminary results show that this method of assessment appears to be more accurate and robust than the currently utilized methods, which involve looking at percentages of radiodensities in the air passages of the lung.

  2. A Model for Teaching Writing: Process and Product. Fastback 256.

    ERIC Educational Resources Information Center

    Walling, Donovan R.

    Intended to help teachers understand the complexities of the writing process, this pamphlet offers a model for writing conceptualized in three phases: stimulus, process, and product. The process phase is then examined from the perspectives of: consciousness, speed and elaboration, and mental/physical interaction. The following implications for…

  3. Using NASA Space Imaging Technology to Teach Earth and Sun Topics

    NASA Astrophysics Data System (ADS)

    Verner, E.; Bruhweiler, F. C.; Long, T.

    2011-12-01

    We teach an experimental college-level course, directed toward elementary education majors, emphasizing "hands-on" activities that can be easily applied to the elementary classroom. This course, Physics 240: "The Sun-Earth Connection" includes various ways to study selected topics in physics, earth science, and basic astronomy. Our lesson plans and EPO materials make extensive use of NASA imagery and cover topics about magnetism, the solar photospheric, chromospheric, coronal spectra, as well as earth science and climate. In addition we are developing and will cover topics on ecosystem structure, biomass and water on Earth. We strive to free the non-science undergraduate from the "fear of science" and replace it with the excitement of science such that these future teachers will carry this excitement to their future students. Hands-on experiments, computer simulations, analysis of real NASA data, and vigorous seminar discussions are blended in an inquiry-driven curriculum to instill confident understanding of basic physical science and modern, effective methods for teaching it. The course also demonstrates ways how scientific thinking and hands-on activities could be implemented in the classroom. We have designed this course to provide the non-science student a confident basic understanding of physical science and modern, effective methods for teaching it. Most of topics were selected using National Science Standards and National Mathematics Standards that are addressed in grades K-8. The course focuses on helping education majors: 1) Build knowledge of scientific concepts and processes; 2) Understand the measurable attributes of objects and the units and methods of measurements; 3) Conduct data analysis (collecting, organizing, presenting scientific data, and to predict the result); 4) Use hands-on approaches to teach science; 5) Be familiar with Internet science teaching resources. Here we share our experiences and challenges we face while teaching this course.

  4. Multispectral image processing: the nature factor

    NASA Astrophysics Data System (ADS)

    Watkins, Wendell R.

    1998-09-01

    The images processed by our brain represent our window into the world. For some animals this window is derived from a single eye, for others, including humans, two eyes provide stereo imagery, for others like the black widow spider several eyes are used (8 eyes), and some insects like the common housefly utilize thousands of eyes (ommatidia). Still other animals like the bat and dolphin have eyes for regular vision, but employ acoustic sonar vision for seeing where their regular eyes don't work such as in pitch black caves or turbid water. Of course, other animals have adapted to dark environments by bringing along their own lighting such as the firefly and several creates from the depths of the ocean floor. Animal vision is truly varied and has developed over millennia in many remarkable ways. We have learned a lot about vision processes by studying these animal systems and can still learn even more.

  5. Learning tumor diagnostics and medical image processing via the WWW — the case-based radiological textbook ODITEB

    Microsoft Academic Search

    Alexander Horsch; Thomas Balbach; Susanne Melnitzki; Jürgen Knauth

    2000-01-01

    New Internet technologies offer excellent chances to build high-quality on-line learning media for the education in medicine. Especially, the teaching of diagnostics with medical imaging as well as medical image processing can be supported by the excellent visualization and interaction capabilities. In cooperation with three radiological departments at German universities in Munich, Erlangen and Würzburg, the case-based open distributed Internet

  6. 3602 IEEE TRANSACTIONS ON IMAGE PROCESSING, VOL. 15, NO. 11, NOVEMBER 2006 General Logarithmic Image Processing Convolution

    E-print Network

    Eduardo, Ros

    3602 IEEE TRANSACTIONS ON IMAGE PROCESSING, VOL. 15, NO. 11, NOVEMBER 2006 General Logarithmic Image Processing Convolution Jose M. Palomares, Member, IEEE, Jesús González, Eduardo Ros, and Alberto Prieto, Senior Member, IEEE Abstract--The logarithmic image processing model (LIP) is a robust

  7. Extraction of subjective properties in image processing

    NASA Astrophysics Data System (ADS)

    Martin-Pereda, Jose A.; Gonzalez-Marcos, Ana P.

    2002-11-01

    Most of the present digital images processing methods are related with objective characterization of external properties as shape, form or colour. This information concerns objective characteristics of different bodies and is applied to extract details to perform several different tasks. But in some occasions, some other type of information is needed. This is the case when the image processing system is going to be applied to some operation related with living bodies. In this case, some other type of object information may be useful. As a matter of fact, it may give additional knowledge about its subjective properties. Some of these properties are object symmetry, parallelism between lines and the feeling of size. These types of properties concerns more to internal sensations of living beings when they are related with their environment than to the objective information obtained by artificial systems. This paper presents an elemental system able to detect some of the above-mentioned parameters. A first mathematical model to analyze these situations is reported. This theoretical model will give the possibility to implement a simple working system. The basis of this system is the use of optical logic cells, previously employed in optical computing.

  8. DKIST visible broadband imager data processing pipeline

    NASA Astrophysics Data System (ADS)

    Beard, Andrew; Cowan, Bruce; Ferayorni, Andrew

    2014-07-01

    The Daniel K. Inouye Solar Telescope (DKIST) Data Handling System (DHS) provides the technical framework and building blocks for developing on-summit instrument quality assurance and data reduction pipelines. The DKIST Visible Broadband Imager (VBI) is a first light instrument that alone will create two data streams with a bandwidth of 960 MB/s each. The high data rate and data volume of the VBI require near-real time processing capability for quality assurance and data reduction, and will be performed on-summit using Graphics Processing Unit (GPU) technology. The VBI data processing pipeline (DPP) is the first designed and developed using the DKIST DHS components, and therefore provides insight into the strengths and weaknesses of the framework. In this paper we lay out the design of the VBI DPP, examine how the underlying DKIST DHS components are utilized, and discuss how integration of the DHS framework with GPUs was accomplished. We present our results of the VBI DPP alpha release implementation of the calibration, frame selection reduction, and quality assurance display processing nodes.

  9. On Anisotropic Diffusion in 3D image processing and image sequence analysis

    Microsoft Academic Search

    Karol Mikula; Martin Rumpf; Fiorella Sgallari

    A morphological multiscale method in 3D image and 3D image sequence processing is discussed which identifies edges on level sets and the motion of features in time. Based on these indicator evaluation the image data is processed applying nonlinear diffusion and the theory of geometric evolution problems. The aim is to smooth level sets of a 3D image while simultaneously

  10. Morphological image processing for locating minelike objects from side-scan sonar images

    Microsoft Academic Search

    Gordon L. Swartzman; William C. Kooiman

    1999-01-01

    A morphological image-processing algorithm was developed to facilitate the rapid identification of bottom minelike objects in side scan sonar acoustic backscatter images. Because large numbers of images are being processed, the emphasis is on rapid computation. The algorithm achieves computational efficiency by dividing the image into bins of a pre-chosen size and performing a binary opening operation for each bin

  11. Automated construction of three dimensional image processing procedures by pictorial example with application to medical images

    Microsoft Academic Search

    A. Shimizu; Xiang-Rong Zhou; J. Hasegawa; J. Toriwaki

    1996-01-01

    Presents an expert system for three dimensional image processing. In analyzing three dimensional gray images, e.g. CT images, a process for extraction of interest regions from each image is frequently required. However, it is difficult to construct all extinction procedure with parameters optimized for each purpose. The proposed system can automatically construct a three dimensional object extraction procedure based on

  12. EDICS: IP 1.1 (IMAGE PROCESSING: CODING) 1 Fast and memory efficient text image

    E-print Network

    Cosman, Pamela C.

    EDICS: IP 1.1 (IMAGE PROCESSING: CODING) 1 Fast and memory efficient text image compression encoding time, memory consumption and substitution errors for text image compression with JBIG2. We first in the reconstructed images. Keywords JBIG2, text image compression, soft pattern matching, pattern matching

  13. Teaching creativity involves both cognitive and affective learning processes organized as 3D cases on The Creative Platform

    Microsoft Academic Search

    S. Hansen; C. Byrge

    Teaching creativity involves both a cognitive and an affective learning process. Creativity can be defined as our ability to perceive and respond to stimuli in a new way. Teaching creativity therefore involves both cognitive and affective learning processes. Cognitive because our thinking is cognitive and affective because our thinking is close related to our body movements and attitude in a

  14. Teaching Writing Using the Process-Oriented Approach.

    ERIC Educational Resources Information Center

    Westervelt, Lisa

    This study had three objectives: (1) to examine and describe factors that help to create a positive attitude toward learning; (2) to examine and describe factors that led to students' participation in the process-oriented approach; and (3) to examine and describe perceptions and experiences that students had involving the process-oriented…

  15. History and Ethno-Mathematics in the interpretation of the process of learning/teaching

    E-print Network

    Spagnolo, Filippo

    with sintactical and semantic relations, history of mathematics and style of understanding. 2.1. The experimental1 History and Ethno-Mathematics in the interpretation of the process of learning/teaching Filippo the relationship between Epistemology, History and communication of mathematics. If the interpretation of phenomena

  16. Developing and evaluating an organizational learning process to continuously improve teaching

    Microsoft Academic Search

    T. Kotnour

    1999-01-01

    The contribution of this paper is a description and evaluation of an organizational learning teaching process for continuously improving the content and delivery of lectures within a course and the overall course. Other authors suggest using periodic feedback mechanisms. In this research, the organizational learning literature and a survey of students provide support for using a periodic end-of-lecture feedback mechanism

  17. A National Research Survey of Technology Use in the BSW Teaching and Learning Process

    ERIC Educational Resources Information Center

    Buquoi, Brittany; McClure, Carli; Kotrlik, Joseph W.; Machtmes, Krisanna; Bunch, J. C.

    2013-01-01

    The purpose of this descriptive-correlational research study was to assess the overall use of technology in the teaching and learning process (TLP) by BSW educators. The accessible and target population included all full-time, professorial-rank, BSW faculty in Council on Social Work Education--accredited BSW programs at land grant universities.…

  18. ICCE/ICCAI 2000 Full & Short Papers (Teaching and Learning Processes).

    ERIC Educational Resources Information Center

    2000

    This document contains the full and short papers on teaching and learning processes from ICCE/ICCAI 2000 (International Conference on Computers in Education/International Conference on Computer-Assisted Instruction) covering the following topics: a code restructuring tool to help scaffold novice programmers; efficient study of Kanji using…

  19. Internet Access, Use and Sharing Levels among Students during the Teaching-Learning Process

    ERIC Educational Resources Information Center

    Tutkun, Omer F.

    2011-01-01

    The purpose of this study was to determine the awareness among students and levels regarding student access, use, and knowledge sharing during the teaching-learning process. The triangulation method was utilized in this study. The population of the research universe was 21,747. The student sample population was 1,292. Two different data collection…

  20. CONGRUENCY AND ACADEMIC PERFORMANCE: AN ANALYSIS OF THE TEACHING-LEARNING PROCESS

    Microsoft Academic Search

    Bertrem Young

    1971-01-01

    This study reviews the relevant research concerning the factors affecting academic performance in post-secondary education and offers a tentative model of the teaching learning process with which to analyze the social and educational factors affecting academic performance. The data employed in the study were collected in April of 1970 via a questionnaire given to the first year students enrol1ed in

  1. Three approaches to teaching and learning in education: Behavioral, piagetian, and information-processing

    Microsoft Academic Search

    Emanuel J. Mason; Patricia Cegelka; Rena Lewis; Suzanne Henry; Jill Larkin; Fred Danner

    1983-01-01

    This collection of papers includes presentations by accomplished researchers who have different theoretical orientations toward how learning and thinking develop. The presenters (Patricia Cegelka and Rena Lewis, San Diego University-Behaviorism; Suzanne Henry, International Business Machines — Piagetian; and Jill Larkin, Carnegie-Mellon University — Information Processing) each describe how someone with their perspective might go about teaching tenth grade students about

  2. Social interest and the development of cortical face specialization: what autism teaches us about face processing.

    E-print Network

    Gauthier, Isabel

    spectrum disorder (ASD) inform upon theories of the development of "normal" face processing, and the story1 Social interest and the development of cortical face specialization: what autism teaches us about Child Study Center and Developmental Neuroimaging Program, Yale University School of Medicine 2

  3. Using a Laboratory Simulator in the Teaching and Study of Chemical Processes in Estuarine Systems

    ERIC Educational Resources Information Center

    Garcia-Luque, E.; Ortega, T.; Forja, J. M.; Gomez-Parra, A.

    2004-01-01

    The teaching of Chemical Oceanography in the Faculty of Marine and Environmental Sciences of the University of Cadiz (Spain) has been improved since 1994 by the employment of a device for the laboratory simulation of estuarine mixing processes and the characterisation of the chemical behaviour of many substances that pass through an estuary. The…

  4. A Performer's Creative Processes: Implications for Teaching and Learning Musical Interpretation

    ERIC Educational Resources Information Center

    Silverman, Marissa

    2008-01-01

    The purpose of this study is to investigate aspects of musical interpretation and suggest guidelines for developing performance students' interpretative processes. Since musical interpretation involves basic issues concerning the nature of music, and competing concepts of "interpretation" and its teaching, an overview of these issues is given.…

  5. Applying the Decoding the Disciplines Process to Teaching Structural Mechanics: An Autoethnographic Case Study

    ERIC Educational Resources Information Center

    Tingerthal, John Steven

    2013-01-01

    Using case study methodology and autoethnographic methods, this study examines a process of curricular development known as "Decoding the Disciplines" (Decoding) by documenting the experience of its application in a construction engineering mechanics course. Motivated by the call to integrate what is known about teaching and learning…

  6. ROLE OF INFORMATION TECHNOLOGIES IN TEACHING LEARNING PROCESS: Perception of the Faculty

    Microsoft Academic Search

    Muhammad SAFDAR

    Information technologies have affected every aspect of human activity and have a potential role to play in the field of education and training, specially, in distance education to transform it into an innovative form of experience. The need of new technologies in teaching learning process grows stronger and faster. The information age becomes an era of knowledge providing sound and

  7. Metaphors in Mathematics Classrooms: Analyzing the Dynamic Process of Teaching and Learning of Graph Functions

    ERIC Educational Resources Information Center

    Font, Vicenc; Bolite, Janete; Acevedo, Jorge

    2010-01-01

    This article presents an analysis of a phenomenon that was observed within the dynamic processes of teaching and learning to read and elaborate Cartesian graphs for functions at high-school level. Two questions were considered during this investigation: What types of metaphors does the teacher use to explain the graphic representation of functions…

  8. Teaching Heritage

    NSDL National Science Digital Library

    Subtitled "a professional development Website for teachers," Teaching Heritage is an impressive collection of information and resources for teaching Australian history and culture. There are eight main sections to the site: four offer teaching resources and four provide teaching units. The resource sections include an examination of different ways of defining heritage, an Australian heritage timeline, discussions of different approaches to teaching heritage through media, and outcomes-based approaches in teaching and assessing heritage coursework. The teaching units deal in depth with issues of citizenship, nationalism, Australian identities, and new cultural values. A Heritage Gallery features images of various culturally significant or representative places in Australia, such as New Italy, the Dundullimal Homestead, Australian Hall, Kelly's Bush, and many more. Obviously, teachers of Civics on the southern continent will find this site extremely useful, but the teaching units -- rich with texts and images -- also offer fascinating introductions for anyone interested in the issues of Australian nation-making.

  9. A Survey on Skeletons in Digital Image Processing

    Microsoft Academic Search

    J. K. Lakshmi; M. Punithavalli

    2009-01-01

    An image is digitized to convert it to a form which can be stored in a computer's memory or on some form of storage media such as a hard disk or CD-ROM. Once the image has been digitized, it can be operated upon by various image processing operations like enhancement, restoration, reconstruction, compression. An image defined in the \\

  10. PMP596: Digital Image and Video Processing Course Syllabus

    E-print Network

    Washington at Seattle, University of

    and Image Fusion (1 week) 9. Image Super Resolution (0.5 week) 10. 3D Video (1 week) Grading: MidtermPMP596: Digital Image and Video Processing Course Syllabus Credits: 4 Goal: The goal of this course is to introduce to students the basic theory and recent important topics related to digital image

  11. Optoelectronic image processing system for satellite landmark navigation

    Microsoft Academic Search

    Sergey V. Dyblenko; Klaus Janschek; Anton Kisselev; Albert H. Sultanov; Valerij Tchernykh

    2004-01-01

    Information system determining the satellite navigation parameters on the base of landmark image processing is considered. The concept of the optoelectronic navigation is based on the onboard optical correlator application for real time matching of the Earth images and prerecorded images of landmarks with known coordinates. The system is suitable for the low-orbit Earth imaging missions with 3-axis attitude stabilization

  12. Image processing methods for identifying species of plants

    Microsoft Academic Search

    Shulin Dave; Ken Runtz

    1995-01-01

    More selective methods for applying agricultural herbicides on fields can result in substantial cost savings. Three image processing methods were tested for their ability to identify four different images of plant species. First two images were different and the other two were similar. The images are preprocessed by segmentation and spatial filtering using the Color Chromaticity Chart. The test results

  13. A Web Based Medical Image Data Processing and Management System

    Microsoft Academic Search

    Jinman Kim; David Dagan Feng; Tom Weidong Cai

    2000-01-01

    Medical services in current-time rely heavily on digital imaging technology due to image modalities utilized in medical field such as the computer tomography and magnetic resonance imaging. These techniques require image-processing tools and digital management that has been the primary reason for development of Picture Archiving and Communication Systems (PACS). The limitation to PACS is that the system architecture limits

  14. IEEE TRANSACTIONS IMAGE PROCESSING 1 Shearlet Based Total Variation for

    E-print Network

    Labate, Demetrio

    in signal processing. Common power- ful techniques for image denoising are based on wavelets as well wavelet coefficients and a denoised esti- mate of the image can be made by removing the waveletIEEE TRANSACTIONS IMAGE PROCESSING 1 Shearlet Based Total Variation for Denoising Glenn R. Easley

  15. EMAN2: An extensible image processing suite for electron microscopy

    Microsoft Academic Search

    Guang Tang; Liwei Peng; Philip R. Baldwin; Deepinder S. Mann; Wen Jiang; Ian Rees; Steven J. Ludtke

    2007-01-01

    EMAN is a scientific image processing package with a particular focus on single particle reconstruction from transmission electron microscopy (TEM) images. It was first released in 1999, and new versions have been released typically 2–3 times each year since that time. EMAN2 has been under development for the last two years, with a completely refactored image processing library, and a

  16. BIL 415 -Image Processing Practicum Department of Computer Engineering

    E-print Network

    Erdem, Erkut

    BIL 415 - Image Processing Practicum Department of Computer Engineering Problem Set 2 Fall '2014 processing and computational photog- raphy. There are many tools to edit image for giving or changing-2015 Dr. Erkut Erdem TAs. Levent Karacan Create Your Own Image Effects Due Date: 23:59pm on Friday

  17. A software architecture for user transparent parallel image processing

    E-print Network

    Geusebroek, Jan-Mark

    A software architecture for user transparent parallel image processing F.J. Seinstra *, D. Koelma image processing researchers to de- velop parallel applications in a transparent manner. The architecture's main component is an extensive library of data parallel low level image operations capable

  18. A Software Architecture for User Transparent Parallel Image Processing

    E-print Network

    Seinstra, Frank J.

    A Software Architecture for User Transparent Parallel Image Processing F.J. Seinstra, D. Koelma This paper describes a software architecture that allows image processing researchers to develop parallel parallel low level image operations capable of running on homogeneous distributed memory MIMD

  19. Application of near-infrared image processing in agricultural engineering

    Microsoft Academic Search

    Ming-Hong Chen; Guo-Ping Zhang; Hongxing Xia

    2009-01-01

    Recently, with development of computer technology, the application field of near-infrared image processing becomes much wider. In this paper the technical characteristic and development of modern NIR imaging and NIR spectroscopy analysis were introduced. It is concluded application and studying of the NIR imaging processing technique in the agricultural engineering in recent years, base on the application principle and developing

  20. Spherical Image Processing for Accurate Visual Odometry with Omnidirectional Cameras

    E-print Network

    Paris-Sud XI, Université de

    Spherical Image Processing for Accurate Visual Odometry with Omnidirectional Cameras Hicham Hadj for increasing the accuracy of visual odometry estimation. The omnidirectional images are mapped onto a unit the accuracy of the visual odometry obtained using the spherical image processing and the improvement

  1. DSP real-time operating system coordinates image processing

    Microsoft Academic Search

    M. Grosen

    1996-01-01

    Because of their high-speed arithmetic, interrupt processing, and I\\/O facilities, DSPs are a natural for applications that require image capture, control, and processing. In some cases, DSPs are used as controllers in conjunction with specialized imaging ASICs. In other applications, one or more DSPs are used to execute both control and core imaging functions like FFTs, filters, and correlations. The

  2. It's All about Process: Project Oriented Teaching of Software Engineering

    Microsoft Academic Search

    Dennis P. Groth; Edward L. Robertson

    2001-01-01

    Process considerations are a central part of the material for a software engineering course; they are also central to accomplishing full-lifecycle, team-based systems development projects in such a course. This paper discusses the ways in which we have achieved an effective process structure within an academic context of full-year project courses. The key features are a kernel project plan and

  3. Signal and Image Processing with Sinlets

    E-print Network

    Alexander Y. Davydov

    2012-09-17

    This paper presents a new family of localized orthonormal bases - sinlets - which are well suited for both signal and image processing and analysis. One-dimensional sinlets are related to specific solutions of the time-dependent harmonic oscillator equation. By construction, each sinlet is infinitely differentiable and has a well-defined and smooth instantaneous frequency known in analytical form. For square-integrable transient signals with infinite support, one-dimensional sinlet basis provides an advantageous alternative to the Fourier transform by rendering accurate signal representation via a countable set of real-valued coefficients. The properties of sinlets make them suitable for analyzing many real-world signals whose frequency content changes with time including radar and sonar waveforms, music, speech, biological echolocation sounds, biomedical signals, seismic acoustic waves, and signals employed in wireless communication systems. One-dimensional sinlet bases can be used to construct two- and higher-dimensional bases with variety of potential applications including image analysis and representation.

  4. Statistical Calibration of the CCD Imaging Process

    Microsoft Academic Search

    Yanghai Tsin; Visvanathan Ramesh; Takeo Kanade

    2001-01-01

    Charge-Coupled Device (CCD) cameras are widely used imaging sensors in computer vision systems. Many pho- tometric algorithms, such as shape from shading, color constancy, and photometric stereo, implicitly assume that the image intensity is proportional to scene radiance. The actual image measurements deviate significantly from this assumption since the transformation from scene radiance to image intensity is non-linear and is

  5. Automatic processing method of mass MODIS image data

    NASA Astrophysics Data System (ADS)

    Yan, Su; Xie, Chengjun

    2013-12-01

    As one of the most popular optical remote sensor images, MODIS (Moderate Resolution Imaging Spectroradiometer) image are widely used in many areas. However, the processing of MODIS image data is considered as a cumbersome, time-consuming work, especially for the long time series earth observation research. Automatic processing technology is specially needed here. But because of the complex procedure of image matching and the high requirement of location calibration, these images are manual processed in most of the researches. This paper presents an automatic processing method for MODIS image products (mainly for Level 1 B, can be applied on 8-day snow observation image product and daily snow cover optical image data as well). By using the automatic processing system, the efficiency of optical remote sensing image processing is sharply increased while the accuracy in calibration remains the same in comparing with traditional processing method. The working flowchart of the processing system is introduced for those who will deal with mass of MODIS data in their research. Finally, an automatic processing system of snow cover monitoring model based on MODIS L1B image data in ENVI/IDL environment is discussed as the practical application of processing method in long time series snow cover monitoring over Northeast China with MODSI images. The performance shows that the time spent in data processing can be saved from 48 manual working days to 2 working days( 10.41 hours) by computer automatic processing, which proves that processing efficiency of long time series remote sensing data, especial MODIS L1B data, can be greatly increased by saving processing time from months to days and researchers will have more free time from burdensome and automatic work by using the auto processing system.

  6. High Speed Imaging Technology for the Microgravity Containerless Processing Facility

    E-print Network

    Fossum, Eric R.

    Study on High Speed Imaging Technology for the Microgravity Containerless Processing Facility Dr September 15, 1992 #12;High Speed Imaging Technology Study page 2 TABLE OF CONTENTS Glossary ..................................................................................................14 Focal-Plane Technology Using CCD Arrays.........................................................14

  7. Teaching MBA Statistics Online: A Pedagogically Sound Process Approach

    ERIC Educational Resources Information Center

    Grandzol, John R.

    2004-01-01

    Delivering MBA statistics in the online environment presents significant challenges to education and students alike because of varying student preparedness levels, complexity of content, difficulty in assessing learning outcomes, and faculty availability and technological expertise. In this article, the author suggests a process model that…

  8. Teaching Information Literacy and Scientific Process Skills: An Integrated Approach.

    ERIC Educational Resources Information Center

    Souchek, Russell; Meier, Marjorie

    1997-01-01

    Describes an online searching and scientific process component taught as part of the laboratory for a general zoology course. The activities were designed to be gradually more challenging, culminating in a student-developed final research project. Student evaluations were positive, and faculty indicated that student research skills transferred to…

  9. Kagan Structures, Processing, and Excellence in College Teaching

    ERIC Educational Resources Information Center

    Kagan, Spencer

    2014-01-01

    Frequent student processing of lecture content (1) clears working memory, (2) increases long-term memory storage, (3) produces retrograde memory enhancement, (4) creates episodic memories, (5) increases alertness, and (6) activates many brain structures. These outcomes increase comprehension of and memory for content. Many professors now…

  10. Creative Process Mentoring: Teaching the "Making" in Dance-Making

    ERIC Educational Resources Information Center

    Lavender, Larry

    2006-01-01

    Within the Western fine arts tradition of concert and theatrical dance, new dances may be created in any number of ways. No matter how dance making begins, however, unless the work is to be improvised afresh each time it is performed, a process of developing, revising, and "setting" the work needs to take place. To move confidently and…

  11. Teaching Undergraduates the Process of Peer Review: Learning by Doing

    ERIC Educational Resources Information Center

    Rangachari, P. K.

    2010-01-01

    An active approach allowed undergraduates in Health Sciences to learn the dynamics of peer review at first hand. A four-stage process was used. In "stage 1", students formed self-selected groups to explore specific issues. In "stage 2", each group posted their interim reports online on a specific date. Each student read all the other reports and…

  12. 2004 International Conference on Image Processing (ICIP) QUATERNION WAVELETS FOR IMAGEANALYSIS AND PROCESSING

    E-print Network

    2004 International Conference on Image Processing (ICIP) QUATERNION WAVELETS FOR IMAGEANALYSIS image niodel- ing. 1. INTRODUCTION Wavelet transforms are powerful multiscale tools for processing of coetficients. Wavelet coefficient sparsity is crit- ical to algorithms such as wavelet signal denoising

  13. Two satellite image sets for the training and validation of image processing systems for defense applications

    NASA Astrophysics Data System (ADS)

    Peterson, Michael R.; Aldridge, Shawn; Herzog, Britny; Moore, Frank

    2010-04-01

    Many image processing algorithms utilize the discrete wavelet transform (DWT) to provide efficient compression and near-perfect reconstruction of image data. Defense applications often require the transmission of data at high levels of compression over noisy channels. In recent years, evolutionary algorithms (EAs) have been utilized to optimize image transform filters that outperform standard wavelets for bandwidth-constrained compression of satellite images. The optimization of these filters requires the use of training images appropriately chosen for the image processing system's intended applications. This paper presents two robust sets of fifty images each intended for the training and validation of satellite and unmanned aerial vehicle (UAV) reconnaissance image processing algorithms. Each set consists of a diverse range of subjects consisting of cities, airports, military bases, and landmarks representative of the types of images that may be captured during reconnaissance missions. Optimized algorithms may be "overtrained" for a specific problem instance and thus exhibit poor performance over a general set of data. To reduce the risk of overtraining an image filter, we evaluate the suitability of each image as a training image. After evolving filters using each image, we assess the average compression performance of each filter across the entire set of images. We thus identify a small subset of images from each set that provide strong performance as training images for the image transform optimization problem. These images will also provide a suitable platform for the development of other algorithms for defense applications. The images are available upon request from the contact author.

  14. A New Algorithm for Millimeter-Wave Imaging Processing

    Microsoft Academic Search

    Z. Y. Xu; W. B. Dou; Z. X. Cao

    2008-01-01

    Compared with optical-wave, millimeter-wave has the advantage of penetration through fog, smoke, clothing etc, which can detect weapons concealed underneath clothing. Unfortunately, the images obtained by millimeter-wave imaging systems have very low resolution. Thus image processing methods to improve image quality is necessary. In the paper, a new image algorithm combining Projection onto Convex Sets algorithm (POCS) and nonlinear extrapolation

  15. Image and Signal Processing LISP Environment (ISLE)

    SciTech Connect

    Azevedo, S.G.; Fitch, J.P.; Johnson, R.R.; Lager, D.L.; Searfus, R.M.

    1987-10-02

    We have developed a multidimensional signal processing software system called the Image and Signal LISP Environment (ISLE). It is a hybrid software system, in that it consists of a LISP interpreter (used as the command processor) combined with FORTRAN, C, or LISP functions (used as the processing and display routines). Learning the syntax for ISLE is relatively simple and has the additional benefit of introducing a subset of commands from the general-purpose programming language, Common LISP. Because Common LISP is a well-documented and complete language, users do not need to depend exclusively on system developers for a description of the features of the command language, nor do the developers need to generate a command parser that exhaustively satisfies all the user requirements. Perhaps the major reason for selecting the LISP environment is that user-written code can be added to the environment through a ''foreign function'' interface without recompiling the entire system. The ability to perform fast prototyping of new algorithms is an important feature of this environment. As currently implemented, ISLE requires a Sun color or monochrome workstation and a license to run Franz Extended Common LISP. 16 refs., 4 figs.

  16. Viking image processing. [digital stereo imagery and computer mosaicking

    NASA Technical Reports Server (NTRS)

    Green, W. B.

    1977-01-01

    The paper discusses the camera systems capable of recording black and white and color imagery developed for the Viking Lander imaging experiment. Each Viking Lander image consisted of a matrix of numbers with 512 rows and an arbitrary number of columns up to a maximum of about 9,000. Various techniques were used in the processing of the Viking Lander images, including: (1) digital geometric transformation, (2) the processing of stereo imagery to produce three-dimensional terrain maps, and (3) computer mosaicking of distinct processed images. A series of Viking Lander images is included.

  17. GStreamer as a framework for image processing applications in image fusion

    NASA Astrophysics Data System (ADS)

    Burks, Stephen D.; Doe, Joshua M.

    2011-05-01

    Multiple source band image fusion can sometimes be a multi-step process that consists of several intermediate image processing steps. Typically, each of these steps is required to be in a particular arrangement in order to produce a unique output image. GStreamer is an open source, cross platform multimedia framework, and using this framework, engineers at NVESD have produced a software package that allows for real time manipulation of processing steps for rapid prototyping in image fusion.

  18. Digital simulation and processing applied to coherent imaging systems

    Microsoft Academic Search

    ROBERT A. JONES

    1975-01-01

    A synthetic-aperture system, such as a coherent sidelooking radar, records a quasi-hologram of the scene which is illuminated by the transmitted radiation. Conventionally, the recorded pattern is converted to an image using optical processing. However, optical processing does not always provide the flexibility, dynamic range, or accuracy necessary to produce optimum images. Digital processing offers the potential for more generalized

  19. Spatial versus temporal stability issues in image processing neuro chips

    Microsoft Academic Search

    Takashi Matsumoto; Haruo Kobayashi; Yoshio Togawa

    1992-01-01

    A typical image processing neuro chip consists of a regular array of very simple cell circuits. When it is implemented by a CMOS process, two stability issues naturally arise. First, parasitic capacitors of MOS transistors induce temporal dynamics. Since a processed image is given as the stable limit point of the temporal dynamics, a temporally unstable chip is unusable. Second,

  20. Research on the Architectures of Parallel Image Processing Systems

    Microsoft Academic Search

    Ma Dongdong; Li Jinzong; Zhu Bing; Zhu Fuzhen

    2008-01-01

    Image processing is considered a good candidate for the application of parallel processing because of the large volumes of data and the complex algorithms commonly encountered. Research on the architectures of parallel image processing systems is the basis of system designing. It plays an important role in achieving optimal conversion from algorithm to structure so that it is helpful to

  1. Query Processing Issues in Image (Multimedia) Databases

    Microsoft Academic Search

    Surya Nepal; M. V. Ramakrishna

    1999-01-01

    Multimedia databases have attracted academic and in- dustrial interest, and systems such as QBIC (Content Based Image Retrieval system from IBM) have been released. Such systems are essential to effectively and efficiently use the existing large collections of image data in the modern com- puting environment. The aim of such systems is to enable retrieval of images based on their

  2. SAR Image Processing Using Artificial Intelligence Planning

    Microsoft Academic Search

    Forest Fisher; Steve A. Chien; Edisanter Lo; Ronald Greeley

    1999-01-01

    In recent times, improvements in imaging techkbgy have made available an incredible array of information in image format. While powerful and sophisticated image pro- cessing sofhvare took are available to prepare and analyze the data, these tools are complex and cumbersome, requir- ing significant expertise to properly operate. Thus, in order to extract (e.g., mine or analyze) useful information from

  3. Pipelined operation of image capturing and processing

    Microsoft Academic Search

    Chi-Jeng Chang; Zen-Yi Huang; Hsin-Yen Li; Kai-Ting Hu; Wen-Chih Tseng

    2005-01-01

    This paper presents an Field Programmable gate Array (FPGA) integrated architecture to perform a pipelined operations of image capturing, convolution and sorting, which are usually done serially. When pixels serially coming from image sensor pile up a first n×n window, a convolution with selected coefficient of n×n matrix can be started to obtain a target image pixel. After the target

  4. Optimizing signal and image processing applications using Intel libraries

    NASA Astrophysics Data System (ADS)

    Landré, Jérôme; Truchetet, Frédéric

    2007-01-01

    This paper presents optimized signal and image processing libraries from Intel Corporation. Intel Performance Primitives (IPP) is a low-level signal and image processing library developed by Intel Corporation to optimize code on Intel processors. Open Computer Vision library (OpenCV) is a high-level library dedicated to computer vision tasks. This article describes the use of both libraries to build flexible and efficient signal and image processing applications.

  5. Image-Processing Software For A Hypercube Computer

    NASA Technical Reports Server (NTRS)

    Lee, Meemong; Mazer, Alan S.; Groom, Steven L.; Williams, Winifred I.

    1992-01-01

    Concurrent Image Processing Executive (CIPE) is software system intended to develop and use image-processing application programs on concurrent computing environment. Designed to shield programmer from complexities of concurrent-system architecture, it provides interactive image-processing environment for end user. CIPE utilizes architectural characteristics of particular concurrent system to maximize efficiency while preserving architectural independence from user and programmer. CIPE runs on Mark-IIIfp 8-node hypercube computer and associated SUN-4 host computer.

  6. Measurement of leaf area index using image-processing technology

    NASA Astrophysics Data System (ADS)

    Qiu, Zhengjun; Fang, Hui; Zhang, Yun; He, Yong

    2005-10-01

    Leaf Area Index (LAI), as a fundamental parameter to evaluate the physiological condition of plants, was calculated by image processing based on machine vision technology. The measurement system hardware consisted primarily of the MS3100 3CCD camera, the image grabber card, a desktop computer and the acquired images were processed by Matlab and ENVI. After acquiring the 3 images by the 3CCD camera of Green, Red and NIR channels, the NIR image was considered more effective in separating the soil background for its higher contrast value. Thus, it was selected for image processing to calculate the leaf area index (LAI). The transect method was applied to obtain the threshold 50 in the binary image conversion and the soil background was thus eliminated as a result that most of its reflectance in the image was under 50. Then the 'imerode'-'imdilate' operation in the image processing box of Matlab was used to remove the left crop stem noises, including those small weeds in the binary image background. Consequently, the LAI of the acquired NIR image was calculated as 0.523 by dividing the total image pixel amount by that of the black pixels in the binary image.

  7. TO BE SUBMITTED TO IEEE TRANSACTIONS ON IMAGE PROCESSING 1 Image Denoising using Derotated Complex

    E-print Network

    Kingsbury, Nick

    and in standard tests. Index Terms complex, wavelet, image, restoration, denoising, interscale phase. I. INTRODUCTION Wavelet transforms have emerged as the premier tool for image denoising, due to the statisticallyTO BE SUBMITTED TO IEEE TRANSACTIONS ON IMAGE PROCESSING 1 Image Denoising using Derotated Complex

  8. SUBMITTED TO IEEE TRANSACTIONS ON IMAGE PROCESSING 1 Adaptive Wavelet Thresholding for Image

    E-print Network

    Yu, Bin

    ­driven threshold for image denoising via wavelet soft­thresholding. The threshold is derived in a BayesianSUBMITTED TO IEEE TRANSACTIONS ON IMAGE PROCESSING 1 Adaptive Wavelet Thresholding for Image. Introduction An image is often corrupted by noise in its acquisition or transmission. The goal of denoising

  9. Abstract --Image segmentation plays an important role in medical image processing. The aim of conventional hard

    E-print Network

    Abstract -- Image segmentation plays an important role in medical image processing. The aim spatial resolution of medical imaging equipment and the complex anatomic structure of soft tissues, a single voxel in a medical image may be composed of several tissue types, which is called partial volume

  10. The suitability of the ILLIAC IV architecture for image processing

    NASA Technical Reports Server (NTRS)

    Stevenson, D. K.; Hord, R. M.

    1979-01-01

    The major architectural features of the ILLIAC IV large scale, array processor are summarized along with their applicability to image processing. Several image processing algorithms are considered, including multispectral classification, texture feature extraction, two-dimensional Fourier transform, and synthetic aperture radar processing. The basic parallelism of the ILLIAC IV (64 processing elements acting in lock-step) is usually fully utilized by the image processing applications. The major architectural aspect of the system with respect to image processing is the relatively small local scratch-pad memory and the long latency time to access the main storage device. The major precision used for the image processing applications is the 32-bit floating point, given a choice of 8-bit integers and 64-bit floating point.

  11. Noticing Children's Learning Processes--Teachers Jointly Reflect on Their Own Classroom Interaction for Improving Mathematics Teaching

    ERIC Educational Resources Information Center

    Scherer, Petra; Steinbring, Heinz

    2006-01-01

    One could focus on many different aspects of improving the quality of mathematics teaching. For a better understanding of children's mathematical learning processes or teaching and learning in general, reflection on and analysis of concrete classroom situations are of major importance. On the basis of experiences gained in a collaborative research…

  12. Quantifying preferential flows in porous soils: An original imaging and image processing procedure

    Microsoft Academic Search

    P. Delmas; C. Duwig; J. Marquez; B. Prado

    2010-01-01

    With the increasing accessibility of image acquisition techniques, image processing has become an essential component of soil science. Here, Image Processing is specifically used to the accurate prediction of solute transport through soils. To do so, dye tracers are leeched into soil cores to visualize active flow paths in cross sections of soil. We have derived a cheap alternative, using

  13. Quantum Image Morphology Processing Based on Quantum Set Operation

    NASA Astrophysics Data System (ADS)

    Zhou, Ri-Gui; Chang, Zhi-bo; Fan, Ping; Li, Wei; Huan, Tian-tian

    2015-06-01

    Set operation is the essential operation of mathematical morphology, but it is difficult to complete the set operation quickly on the electronic computer. Therefore, the efficiency of traditional morphology processing is very low. In this paper, by adopting the method of the combination of quantum computation and image processing, though multiple quantum logical gates and combining the quantum image storage, quantum loading scheme and Boyer search algorithm, a novel quantum image processing method is proposed, which is the morphological image processing based on quantum set operation. The basic operations, such as erosion and dilation, are carried out for the images by using the quantum erosion algorithm and quantum dilation algorithm. Because the parallel capability of quantum computation can improve the speed of the set operation greatly, the image processing gets higher efficiency. The runtime of our quantum algorithm is . As a result, this method can produce better results.

  14. Human skin surface evaluation by image processing

    NASA Astrophysics Data System (ADS)

    Zhu, Liangen; Zhan, Xuemin; Xie, Fengying

    2003-12-01

    Human skin gradually lose its tension and becomes very dry as time flies by. Use of cosmetics is effective to prevent skin aging. Recently, there are many choices of products of cosmetics. To show their effects, It is desirable to develop a way to evaluate quantificationally skin surface condition. In this paper, An automatic skin evaluating method is proposed. The skin surface has the pattern called grid-texture. This pattern is composed of the valleys that spread vertically, horizontally, and obliquely and the hills separated by them. Changes of the grid are closely linked to the skin surface condition. They can serve as a good indicator for the skin condition. By measuring the skin grid using digital image processing technologies, we can evaluate skin surface about its aging, health, and alimentary status. In this method, the skin grid is first detected to form a closed net. Then, some skin parameters such as Roughness, tension, scale and gloss can be calculated from the statistical measurements of the net. Through analyzing these parameters, the condition of the skin can be monitored.

  15. Interactive image processing for mobile devices

    NASA Astrophysics Data System (ADS)

    Shaw, Rodney

    2009-01-01

    As the number of consumer digital images escalates by tens of billions each year, an increasing proportion of these images are being acquired using the latest generations of sophisticated mobile devices. The characteristics of the cameras embedded in these devices now yield image-quality outcomes that approach those of the parallel generations of conventional digital cameras, and all aspects of the management and optimization of these vast new image-populations become of utmost importance in providing ultimate consumer satisfaction. However this satisfaction is still limited by the fact that a substantial proportion of all images are perceived to have inadequate image quality, and a lesser proportion of these to be completely unacceptable (for sharing, archiving, printing, etc). In past years at this same conference, the author has described various aspects of a consumer digital-image interface based entirely on an intuitive image-choice-only operation. Demonstrations have been given of this facility in operation, essentially allowing criticalpath navigation through approximately a million possible image-quality states within a matter of seconds. This was made possible by the definition of a set of orthogonal image vectors, and defining all excursions in terms of a fixed linear visual-pixel model, independent of the image attribute. During recent months this methodology has been extended to yield specific user-interactive image-quality solutions in the form of custom software, which at less than 100kb is readily embedded in the latest generations of unlocked portable devices. This has also necessitated the design of new user-interfaces and controls, as well as streamlined and more intuitive versions of the user quality-choice hierarchy. The technical challenges and details will be described for these modified versions of the enhancement methodology, and initial practical experience with typical images will be described.

  16. APPLEPIPS /Apple Personal Image Processing System/ - An interactive digital image processing system for the Apple II microcomputer

    NASA Technical Reports Server (NTRS)

    Masuoka, E.; Rose, J.; Quattromani, M.

    1981-01-01

    Recent developments related to microprocessor-based personal computers have made low-cost digital image processing systems a reality. Image analysis systems built around these microcomputers provide color image displays for images as large as 256 by 240 pixels in sixteen colors. Descriptive statistics can be computed for portions of an image, and supervised image classification can be obtained. The systems support Basic, Fortran, Pascal, and assembler language. A description is provided of a system which is representative of the new microprocessor-based image processing systems currently on the market. While small systems may never be truly independent of larger mainframes, because they lack 9-track tape drives, the independent processing power of the microcomputers will help alleviate some of the turn-around time problems associated with image analysis and display on the larger multiuser systems.

  17. Experiments with recursive estimation in astronomical image processing

    NASA Technical Reports Server (NTRS)

    Busko, I.

    1992-01-01

    Recursive estimation concepts were applied to image enhancement problems since the 70's. However, very few applications in the particular area of astronomical image processing are known. These concepts were derived, for 2-dimensional images, from the well-known theory of Kalman filtering in one dimension. The historic reasons for application of these techniques to digital images are related to the images' scanned nature, in which the temporal output of a scanner device can be processed on-line by techniques borrowed directly from 1-dimensional recursive signal analysis. However, recursive estimation has particular properties that make it attractive even in modern days, when big computer memories make the full scanned image available to the processor at any given time. One particularly important aspect is the ability of recursive techniques to deal with non-stationary phenomena, that is, phenomena which have their statistical properties variable in time (or position in a 2-D image). Many image processing methods make underlying stationary assumptions either for the stochastic field being imaged, for the imaging system properties, or both. They will underperform, or even fail, when applied to images that deviate significantly from stationarity. Recursive methods, on the contrary, make it feasible to perform adaptive processing, that is, to process the image by a processor with properties tuned to the image's local statistical properties. Recursive estimation can be used to build estimates of images degraded by such phenomena as noise and blur. We show examples of recursive adaptive processing of astronomical images, using several local statistical properties to drive the adaptive processor, as average signal intensity, signal-to-noise and autocorrelation function. Software was developed under IRAF, and as such will be made available to interested users.

  18. 2340 IEEE TRANSACTIONS ON IMAGE PROCESSING, VOL. 18, NO. 10, OCTOBER 2009 Image Registration Using Adaptive Polar Transform

    E-print Network

    Zheng, Yuan F.

    2340 IEEE TRANSACTIONS ON IMAGE PROCESSING, VOL. 18, NO. 10, OCTOBER 2009 Image Registration Using. Ewing, Senior Member, IEEE Abstract--Image registration is an essential step in many image processing registration is an essential step in many image processing applications that involve multiple images

  19. The processing and coding of digital image sequences

    Microsoft Academic Search

    M. Kunt

    1989-01-01

    Summary form only given. Digital image processing and coding techniques for application to sequence of images have been examined. Of particular interest are methods applicable to videophones, teleconferencing, and TV broadcasting. One method under development is based on the idea that images are composed of contours, surrounding regions that are (in some sense) uniform. Another technique being developed is based

  20. SUSAN - A New Approach to Low Level Image Processing

    Microsoft Academic Search

    Stephen M. Smith; J. Michael Brady; Stephen M. Smith

    1997-01-01

    This paper describes a new approach to low level image processing; in particular, edge and corner detection and structure preserving noise reduction. Non-linear filtering is used to define which parts of the image are closely related to each individual pixel; each pixel has associated with it a local image region which is of similar brightness to that pixel. The new

  1. Optimisation of natural images processing using different evolutionary algorithms

    Microsoft Academic Search

    Xavier P. Burgos-artizzu; Angela Ribeiro; Alberto Tellaeche; Gonzalo Pajares

    2008-01-01

    The development of image processing methods to discriminate between weed, crop and soil is an important step for precision agriculture, the main goal of which is the site-specific management of crops. The main challenge in terms of image analysis is to achieve an appropriate discrimination in outdoor field images under varying conditions of lighting, soil background texture and crop damage.

  2. Stagewise processing in error-correcting codes and image restoration

    E-print Network

    Wong, Michael K Y

    Stagewise processing in error-correcting codes and image restoration K. Y. Michael Wong Department and image restoration, by extracting information from the former stage and using it selectively to improve In error-correcting codes [1] and image restoration [2], the choice of the so-called hyperparameters

  3. Bessel filters applied in biomedical image processing

    NASA Astrophysics Data System (ADS)

    Mesa Lopez, Juan Pablo; Castañeda Saldarriaga, Diego Leon

    2014-06-01

    A magnetic resonance is an image obtained by means of an imaging test that uses magnets and radio waves to create body images, however, in some images it's difficult to recognize organs or foreign agents present in the body. With these Bessel filters the objective is to significantly increase the resolution of magnetic resonance images taken to make them much clearer in order to detect anomalies and diagnose the illness. As it's known, Bessel filters appear to solve the Schrödinger equation for a particle enclosed in a cylinder and affect the image distorting the colors and contours of it, therein lies the effectiveness of these filters, since the clear outline shows more defined and easy to recognize abnormalities inside the body.

  4. THE ROLE OF LEARNING STYLES IN THE TEACHING\\/LEARNING PROCESS

    Microsoft Academic Search

    Nancy Csapo

    2006-01-01

    This study is an analysis of learning style types for a variety of students at different grade levels. Over 2,000 students completed a questionnaire to determine if their learning style was auditory, visual, or tactile\\/kinesthetic. The purpose of this study was to increase faculty awareness and understanding of the role of learning styles in the teaching\\/learning process. A review of

  5. On the Development of a Programming Teaching Tool: The Effect of Teaching by Templates on the Learning Process

    ERIC Educational Resources Information Center

    Al-Imamy, Samer; Alizadeh, Javanshir; Nour, Mohamed A.

    2006-01-01

    One of the major issues related to teaching an introductory programming course is the excessive amount of time spent on the language's syntax, which leaves little time for developing skills in program design and solution creativity. The wide variation in the students' backgrounds, coupled with the traditional classroom (one size-fits-all) teaching

  6. Agglomerates processing on in-flight images of granular products

    NASA Astrophysics Data System (ADS)

    Ros, Frederic; Guillaume, S.; Sevila, Francis

    1993-11-01

    Image analysis can be used to characterize granular populations in many processes in food industry or in agricultural engineering. Either global or individual parameters can be extracted from the image. However, granular products may appear agglomerate on the image, bringing biasing on individual parameters. Combining statistical and neural network technics enables the build of a system which can recognize if products are agglomerate or not. To process images after agglomerates detection, two approaches have been studied: the first is based on erosion, followed by conditional dilation with the original image; the second takes advantage of the graph's properties of the agglomerate's skeleton.

  7. Irregularities and Scaling in Signal and Image Processing: Multifractal Analysis

    E-print Network

    Paris-Sud XI, Université de

    Irregularities and Scaling in Signal and Image Processing: Multifractal Analysis P. Abry , S: Multifractal analysis . . . . . . . . . . . . . . . . . . 7 1.4 Data analysis and Signal Processing underlying multifractal analysis. Third, it will reformulate these theoretical tools into a wavelet framework

  8. Multi-scale Tools for Solar Image Processing

    NASA Astrophysics Data System (ADS)

    Young, C.; Ireland, J.; McAteer, R.; Gallagher, P. T.; Byrne, J.

    2007-12-01

    The important information contained in solar image data exists on many different time and spatial scales. This makes multi-scale transforms such as wavelets and curvelets very appropriate tools. These and other multi- scale transforms are used in several different types of image processing including image enhancement, feature detection, deconvolution and noise reduction. We present an overview of multi-scale transforms and show some of their applications to solar image data.

  9. Image data processing of earth resources management. [technology transfer

    NASA Technical Reports Server (NTRS)

    Desio, A. W.

    1974-01-01

    Various image processing and information extraction systems are described along with the design and operation of an interactive multispectral information system, IMAGE 100. Analyses of ERTS data, using IMAGE 100, over a number of U.S. sites are presented. The following analyses are included: investigations of crop inventory and management using remote sensing; and (2) land cover classification for environmental impact assessments. Results show that useful information is provided by IMAGE 100 analyses of ERTS data in digital form.

  10. IMAGE PROCESSING WITH NON-LOCAL SPECTRAL BASES

    E-print Network

    Paris-Sud XI, Université de

    . Image processing, manifold, non-local denoising, adapted bases. AMS subject classifications. 41A25, 42C the properties of such thresholdings. The connexions with more traditional wavelet-based and total variationIMAGE PROCESSING WITH NON-LOCAL SPECTRAL BASES GABRIEL PEYR´E Abstract. This article studies

  11. Stochastic Circuits for Real-Time Image-Processing Applications

    E-print Network

    Hayes, John P.

    . This work addresses the design of image- processing circuits using stochastic computing techniques. We show efficient real-time (pre)processing of images. We present the design of several representative circuits Structures, B.6 Logic Design, C.3 Special-Purpose and Application-Based Systems. General Terms Design

  12. VME image acquisition and processing using standard TV CCD cameras

    Microsoft Academic Search

    F. Epaud; P. Verdier

    1994-01-01

    The ESRF has released the first version of a low-cost image acquisition and processing system based on a industrial VME board and commercial CCD TV cameras. The images from standard CCIR (625 lines) or EIA (525 lines) inputs are digitised with 8-bit dynamic range and stored in a general purpose frame buffer to be processed by the embedded firmware. They

  13. Digital image processing software system using an array processor

    SciTech Connect

    Sherwood, R.J.; Portnoff, M.R.; Journeay, C.H.; Twogood, R.E.

    1981-03-10

    A versatile array processor-based system for general-purpose image processing was developed. At the heart of this system is an extensive, flexible software package that incorporates the array processor for effective interactive image processing. The software system is described in detail, and its application to a diverse set of applications at LLNL is briefly discussed. 4 figures, 1 table.

  14. Cork Stopper Classification Using FPGAs and Digital Image Processing Techniques

    Microsoft Academic Search

    Miguel A. Vega-rodríguez; Juan Manuel Sánchez-pérez; Juan Antonio Gómez Pulido

    2001-01-01

    In this paper we study the use of FPGAs as part of an industrial inspection system. More exactly, to evaluate the cork stopper quality applying real-time image processing. Our system uses the HOT2-XL PCI board, a hardware module library implementing some of the most common operations for image processing, and a Visual C++ application in order to validate the hardware

  15. A Java Library of GUI Components for Image Processing Applications

    E-print Network

    Seinstra, Frank J.

    A Java Library of GUI Components for Image Processing Applications Frank Seinstra and Dennis Koelma access to the image processing routines that are available. The Java programming language [1. Moreover, by way of Java applets demonstration on the Internet of speci#12;c research topics is possible

  16. Study of wood defects recognition based on Image Processing

    Microsoft Academic Search

    Hongbo Mu; Dawei Qi; Mingming Zhang

    2010-01-01

    Image Processing of wood defects is important for wood defects recognition. Wood defects influence on wood production quality. X-ray testing system was adopted to detect wood defects. Because it not only can detect wood seeming defects, but also can detect inner defects. The collected images with defects were done median filter processing and edge detection so that the position, size

  17. The research of image processing algorithms in AGVS

    Microsoft Academic Search

    Jun-You Zhang; Shu-Feng Wang

    2007-01-01

    Because of its flexibility and reliability, computer vision guidance is applied into automated guided vehicle system on express highway. Taken landmark as guided line symbol, based on road video image acquisition and processing, the guided line can be identified and the input information for guidance control can be obtained. Since common technology of image processing troubles actual application, algorithms are

  18. Path Processing and block adjustment with RADARSAT-1 SAR images

    Microsoft Academic Search

    Thierry Toutin

    2003-01-01

    The objectives of this research study was to determine the conditions of experimentation and application of path processing and block adjustment with synthetic aperture radar (SAR) images when few controls are available. The path and block processing enabled the simultaneous adjustment of all images together to reduce the control point requirement. The method is based on the three-dimensional physical model

  19. Image Processing In Laser-Beam-Steering Subsystem

    NASA Technical Reports Server (NTRS)

    Lesh, James R.; Ansari, Homayoon; Chen, Chien-Chung; Russell, Donald W.

    1996-01-01

    Conceptual design of image-processing circuitry developed for proposed tracking apparatus described in "Beam-Steering Subsystem For Laser Communication" (NPO-19069). In proposed system, desired frame rate achieved by "windowed" readout scheme in which only pixels containing and surrounding two spots read out and others skipped without being read. Image data processed rapidly and efficiently to achieve high frequency response.

  20. Review Article Automated Processing of Zebrafish Imaging Data

    E-print Network

    Hamprecht, Fred A.

    Review Article Automated Processing of Zebrafish Imaging Data: A Survey Ralf Mikut,1 Thomas microscope technologies allow the imaging of developmental processes in unprecedented detail, and they enable, recognition of tissues and anatomical landmarks, and quantification of behavioral patterns of adult fish. We

  1. Real Time Image Processing based on Reconfigurable Hardware Acceleration

    E-print Network

    Rumpf, Martin

    the underlying mathematical methods easily. The FPGA based hardware implementation profits especially from of the interface (t) = {x |(t, x) = 0 }. Real Time Image Processing based on FPGA Hardware Acceleration 1 #12;If fReal Time Image Processing based on Reconfigurable Hardware Acceleration Steffen Klupsch, Markus

  2. FPGA or Cell for an Image Processing Application

    Microsoft Academic Search

    Ryan N. Rakvic; Hau Ngo; R. P. Broussard; R. W. Ives

    2009-01-01

    Modern advancements in configurable hardware, most notably field-programmable gate arrays (FPGAs) have provided an exciting opportunity to discover the parallel nature of modern image processing algorithms. On the other hand, PlayStation3 (PS3) game consoles contain a multi-core heterogeneous processor known as the cell, which is designed to perform complex image processing algorithms at a high-performance level. All the while, image

  3. Data processing and analysis for mass spectrometry imaging.

    PubMed

    Liu, Jiangjiang; Xiong, Xingchuang; Ouyang, Zheng

    2015-01-01

    Mass spectrometry imaging produces large numbers of spectra that need to be efficiently stored, processed, and analyzed. In this chapter, we describe the protocol and methods for data processing, visualization, and statistical analysis, with related techniques and tools available presented. Examples are given with data collected for a 3D MS imaging of a mouse brain and 2D MS imaging of human bladder tissues. PMID:25361679

  4. Applications of Image Processing to Mine Warfare Sonar

    Microsoft Academic Search

    Stuart William Perry

    It is the intention of the author that this report serve as a strategic review of the potential for image processing techniques to aid the detection and classification of underwater mines and mine-like objects in various modes of sonar imagery. Image processing techniques to improve the performance of mine hunting operations using sector-scan, side-scan and the Acoustic Mine Imaging (AMI)

  5. Using a Configurable Integrated Sensing And Process'ing Imager to Track Multiple Targets

    E-print Network

    Nehorai, Arye

    Using a Configurable Integrated Sensing And Process'ing Imager to Track Multiple Targets loannis (ISP) imager to track a variable number of targets, the imager is configured to select and filter data of targets, we implement a multi- target tracker using a track-before-detect method. We demon- strate using

  6. Harteneck, M. and Stewart, R.W. Adaptive Digital Signal Processing JAVA Teaching Tool. IEEE Transactions on Education, 44 (2). pp. 200-201. ISSN 0018-9359

    E-print Network

    Mignotte, Max

    Harteneck, M. and Stewart, R.W. Adaptive Digital Signal Processing JAVA Teaching Tool. IEEE Administrator: eprints@cis.strath.ac.uk #12;Adaptive Digital Signal Processing JAVA Teaching Tool M. Harteneck, November 1999 Abstract This publication presents a JAVA program for teaching the rudiments of adaptive

  7. Position invariant linear operations in image processing 

    E-print Network

    Dillon, Terrence Lee

    1972-01-01

    and systematic noise. Under natural assumptions, this can theoretically be done by convolution in the spatial domain or multiplication in the Fourier Domain. One approach is to analyze the images in the same manner as electrical signals. Instead of a current... BY WEIGHTED AVERAGE 10 ATTENUATION OF DISTORTING HIGH FREQUENCIES ~ 11 IMPROVING IMAGE BY 'INCREASING FILTER SIZE 16 17 18 20 21 22 24 25 26 12 REPRESENTATION OF SINE WAVE RESPONSE MEASUREMENT. . . 31 13 MTF (Fourier transtorm) OF DIFFRACTION...

  8. Image Processing via the Beltrami Operator

    Microsoft Academic Search

    Ron Kimmel; Ravi Malladi; Nir A. Sochen

    1998-01-01

    . We present a framework for enhancing images while preservingeither the edge or the orientation-dependent texture informationpresent in them. We do this by treating images as manifolds in afeature-space. This geometrical interpretation leads to a natural way forgrey level, color, movies, volumetric medical data, and color-texture imageenhancement. Following this, we invoke the Polyakov action fromhigh-energy physics, and develop a minimization

  9. Development of multispectral image processing algorithms for identification of wholesome, septicemic, and inflammatory process chickens

    Microsoft Academic Search

    Chun-Chieh Yang; Kuanglin Chao; Yud-Ren Chen

    2005-01-01

    A multispectral imaging system and image processing algorithms for food safety inspection of poultry carcasses were demonstrated. Three key wavelengths of 460, 540, and 700nm, previously identified using a visible\\/near-infrared spectrophotometer, were implemented in a common-aperture multispectral imaging system, and images were collected for 174 wholesome, 75 inflammatory process, and 170 septicemic chickens. Principal component analysis was used to develop

  10. Teaching Cost-Conscious Medicine: Impact of a Simple Educational Intervention on Appropriate Abdominal Imaging at a Community-Based Teaching Hospital

    PubMed Central

    Covington, Matthew F.; Agan, Donna L.; Liu, Yang; Johnson, John O.; Shaw, David J.

    2013-01-01

    Background Rising costs pose a major threat to US health care. Residency programs are being asked to teach residents how to provide cost-conscious medical care. Methods An educational intervention incorporating the American College of Radiology appropriateness criteria with lectures on cost-consciousness and on the actual hospital charges for abdominal imaging was implemented for residents at Scripps Mercy Hospital in San Diego, CA. We hypothesized that residents would order fewer abdominal imaging examinations for patients with complaints of abdominal pain after the intervention. We analyzed the type and number of abdominal imaging studies completed for patients admitted to the inpatient teaching service with primary abdominal complaints for 18 months before (738 patients) and 12 months following the intervention (632 patients). Results There was a significant reduction in mean abdominal computed tomography (CT) scans per patient (1.7–1.4 studies per patient, P < .001) and total abdominal radiology studies per patient (3.1–2.7 studies per patient, P ?=? .02) following the intervention. The avoidance of charges solely due to the reduction in abdominal CT scans following the intervention was $129 per patient or $81,528 in total. Conclusions A simple educational intervention appeared to change the radiologic test-ordering behavior of internal medicine residents. Widespread adoption of similar interventions by residency programs could result in significant savings for the health care system. PMID:24404274

  11. Optical Signal Processing: Poisson Image Restoration and Shearing Interferometry

    NASA Technical Reports Server (NTRS)

    Hong, Yie-Ming

    1973-01-01

    Optical signal processing can be performed in either digital or analog systems. Digital computers and coherent optical systems are discussed as they are used in optical signal processing. Topics include: image restoration; phase-object visualization; image contrast reversal; optical computation; image multiplexing; and fabrication of spatial filters. Digital optical data processing deals with restoration of images degraded by signal-dependent noise. When the input data of an image restoration system are the numbers of photoelectrons received from various areas of a photosensitive surface, the data are Poisson distributed with mean values proportional to the illuminance of the incoherently radiating object and background light. Optical signal processing using coherent optical systems is also discussed. Following a brief review of the pertinent details of Ronchi's diffraction grating interferometer, moire effect, carrier-frequency photography, and achromatic holography, two new shearing interferometers based on them are presented. Both interferometers can produce variable shear.

  12. The real-time image processing technique based on DSP

    Microsoft Academic Search

    Qi Chang; Chen Yue-hua; Huang Tian-shu

    2005-01-01

    This paper proposes a novel real-time image processing technique based on digital singnal processor (DSP). At the aspect of\\u000a wavelet transform(WT) algorithm, the technique uses algorithm of second generation wavelet transform-lifting scheme WT that\\u000a has low calculation complexity property for the 2-D image data processing. Since the processing effect of lifting scheme WT\\u000a for 1-D data is better than the

  13. A forensic image processing environment for investigation of surveillance video.

    PubMed

    Jerian, M; Paolino, S; Cervelli, F; Carrato, S; Mattei, A; Garofano, L

    2007-04-11

    We present an image processing software suite, based on the Matlab environment, specifically designed to be used as a forensic tool by law enforcement laboratories in the analysis of crime scene videos and images. Our aim is to overcome some drawbacks which normally appear when using standard image processing tools for this application, i.e. mainly the lack of full control and documentation on the operations which have been performed on the images, and the absence of new, more sophisticated algorithms which can provide improved performances and "make the difference" in critical cases. PMID:16872771

  14. Subway tunnel crack identification algorithm research based on image processing

    NASA Astrophysics Data System (ADS)

    Bai, Biao; Zhu, Liqiang; Wang, Yaodong

    2014-04-01

    The detection of cracks in tunnels has profound impact on the tunnel's safety. It's common for low contrast, uneven illumination and severe noise pollution in tunnel surface images. As traditional image processing algorithms are not suitable for detecting tunnel cracks, a new image processing method for detecting cracks in surface images of subway tunnels is presented in this paper. This algorithm includes two steps. The first step is a preprocessing which uses global and local methods simultaneously. The second step is the elimination of different types of noises based on the connected components. The experimental results show that the proposed algorithm is effective for detecting tunnel surface cracks.

  15. Computer vision applications for coronagraphic optical alignment and image processing

    E-print Network

    Savransky, Dmitry; Poyneer, Lisa A; Macintosh, Bruce A; 10.1364/AO.52.003394

    2013-01-01

    Modern coronagraphic systems require very precise alignment between optical components and can benefit greatly from automated image processing. We discuss three techniques commonly employed in the fields of computer vision and image analysis as applied to the Gemini Planet Imager, a new facility instrument for the Gemini South Observatory. We describe how feature extraction and clustering methods can be used to aid in automated system alignment tasks, and also present a search algorithm for finding regular features in science images used for calibration and data processing. Along with discussions of each technique, we present our specific implementation and show results of each one in operation.

  16. IEEE TRANSACTIONS ON IMAGE PROCESSING, VOL. 6, NO. 7, JULY 1997 901 Digital Color Imaging

    E-print Network

    Sharma, Gaurav

    in television, photography, movies, books, and newspapers. With the digital revolution, color has become evenIEEE TRANSACTIONS ON IMAGE PROCESSING, VOL. 6, NO. 7, JULY 1997 901 Digital Color Imaging Gaurav and research in the area of digital color imaging. In order to establish the background and lay down

  17. Knowledge-based aerial image understanding systems and expert systems for image processing

    SciTech Connect

    Matsuyama, T.

    1987-05-01

    This paper discusses roles of artificial intelligence in the automatic interpretation of remotely sensed imagery. The authors first discuss several image understanding systems for analyzing complex aerial photographs. The discussion is mainly concerned with knowledge representation and control structure in the aerial image understanding systems: a blackboard model for integrating diverse object detection modules, a symbolic model representation for three-dimensional object recognition, and integration of bottom-up and top-down analyses. Then, a model of expert systems for image processing is introduced that discussed which and what combinations of image processing operators are effective to analyze an image.

  18. Genetic-based fuzzy image filter and its application to image processing.

    PubMed

    Lee, Chang-Shing; Guo, Shu-Mei; Hsu, Chin-Yuan

    2005-08-01

    In this paper, we propose a Genetic-based Fuzzy Image Filter (GFIF) to remove additive identical independent distribution (i.i.d.) impulse noise from highly corrupted images. The proposed filter consists of a fuzzy number construction process, a fuzz filtering process, a genetic learning process, and an image knowledge base. First, the fuzzy number construction process receives sample images or the noise-free image and then constructs an image knowledge base for the fuzzy filtering process. Second, the fuzzy filtering process contains a parallel fuzzy inference mechanism, a fuzzy mean process, and a fuzzy decision process to perform the task of noise removal. Finally, based on the genetic algorithm, the genetic learning process adjusts the parameters of the image knowledge base. By the experimental results, GFIF achieves a better performance than the state-of-the-art filters based on the criteria of Peak-Signal-to-Noise-Ratio (PSNR), Mean-Square-Error (MSE), and Mean-Absolute-Error (MAE). On the subjective evaluation of those filtered images, GFIF also results in a higher quality of global restoration. PMID:16128454

  19. Embedded processor extensions for image processing

    NASA Astrophysics Data System (ADS)

    Thevenin, Mathieu; Paindavoine, Michel; Letellier, Laurent; Heyrman, Barthélémy

    2008-04-01

    The advent of camera phones marks a new phase in embedded camera sales. By late 2009, the total number of camera phones will exceed that of both conventional and digital cameras shipped since the invention of photography. Use in mobile phones of applications like visiophony, matrix code readers and biometrics requires a high degree of component flexibility that image processors (IPs) have not, to date, been able to provide. For all these reasons, programmable processor solutions have become essential. This paper presents several techniques geared to speeding up image processors. It demonstrates that a gain of twice is possible for the complete image acquisition chain and the enhancement pipeline downstream of the video sensor. Such results confirm the potential of these computing systems for supporting future applications.

  20. Image processing and fusion to detect navigation obstacles

    NASA Astrophysics Data System (ADS)

    Yamamoto, Kazuo; Yamada, Kimio

    1998-07-01

    Helicopters flying at low altitude in the visual flight rules often crash against obstacles such as a power transmission line. This paper describes the image sensors to detect obstacles and the several image processing techniques to derive and enhance the targets in the images. The images including obstacles were collected both on the ground and by air using an infrared (IR) camera and a color video camera in different backgrounds, distances, and weather conditions. Collected results revealed that IR images have an advantage over color images to detect obstacles in many environments. Several image processing techniques have been evaluated to improve the qualities of collected images. For example, fusion of IR and color images, several filters, such as the Median filter or the adaptive filter have been tested. Information that the target is thin and long, which characterizes the shape of power lines, has been introduced to derive power lines. It has been shown that these processes can greatly reduce the noise and enhance the contrast, no matter how the background is. It has also been demonstrated that there is a good prospect that these processes will help develop the algorithm for automatic obstacle detection and warning.

  1. Teaching the Process of Science: A Critical Component of Introductory Geoscience Courses

    NASA Astrophysics Data System (ADS)

    Egger, A. E.; Carpi, A.

    2008-12-01

    Undergraduate students hold many misconceptions about the nature and process of science, including the social and cultural components of the scientific endeavor. These misconceptions are perhaps even more pronounced in the geosciences, where most students enter college without having been exposed to subject matter in high school. Many faculty and teachers feel that the process of science is embedded in their teaching through the inclusion of laboratory exercises and assigned readings in the primary literature. These techniques utilize the tools of science, but do not necessarily enlighten students in the actual process by which science progresses. Students do gain that understanding when they are involved in research, but the majority of the undergraduate research experiences are capstone experiences for students who choose to major in the science and engineering disciplines. A critical vehicle for teaching most undergraduate students about the process of science, therefore, is the introductory science course. In these courses, teaching the nature and process of science requires going beyond implicit use of the tools and techniques of science to making explicit reference to the process of science and, in addition, allowing students time to reflect on how they have participated in the process. We have developed a new series of freely accessible, web-based reading materials (available at http://www.visionlearning.com/process_science.php) that explicitly discuss the process of science and can be easily incorporated into any introductory science course, including introductory geoscience. These modules cover a variety of topics including specific research methods, such as experimentation, description, and modeling, as well as other aspects of the process of science like scientific writing, data analysis and interpretation, and the use of statistics. Our preliminary assessment results suggest that students find the text interesting and that they specifically address misconceptions held by students prior to reading them. During fall 2008 we will be more thoroughly evaluating the utility of these materials in a treatment-control designed study initiated in a large, introductory non-major science course. This presentation will present an overview of these materials as well as preliminary data from this evaluation.

  2. A New Method of Image Processing for High-Contrast Medical Infrared Imaging of the Horse

    Microsoft Academic Search

    C. Siewert; C. Staszyk; A. Bienert; B. Krogbeumker; B. Ohnesorge; H. Seifert

    \\u000a Infrared (IR) imaging for medical diagnostics generally requires indication-specific and standardised imaging and image processing.\\u000a Spatial resolution, thermal sensitivity, and image contrast require optimization. Improved contrast, in particular, and the\\u000a optimum utilisation of thermodynamic variables greatly influence the diagnostic utility of the images.\\u000a \\u000a \\u000a Medical IR imaging challenges arise mainly from external influences, such as: ambient temperature, humidity, examination room\\u000a air

  3. Image pre-processing for optimizing automated photogrammetry performances

    NASA Astrophysics Data System (ADS)

    Guidi, G.; Gonizzi, S.; Micoli, L. L.

    2014-05-01

    The purpose of this paper is to analyze how optical pre-processing with polarizing filters and digital pre-processing with HDR imaging, may improve the automated 3D modeling pipeline based on SFM and Image Matching, with special emphasis on optically non-cooperative surfaces of shiny or dark materials. Because of the automatic detection of homologous points, the presence of highlights due to shiny materials, or nearly uniform dark patches produced by low reflectance materials, may produce erroneous matching involving wrong 3D point estimations, and consequently holes and topological errors on the mesh originated by the associated dense 3D cloud. This is due to the limited dynamic range of the 8 bit digital images that are matched each other for generating 3D data. The same 256 levels can be more usefully employed if the actual dynamic range is compressed, avoiding luminance clipping on the darker and lighter image areas. Such approach is here considered both using optical filtering and HDR processing with tone mapping, with experimental evaluation on different Cultural Heritage objects characterized by non-cooperative optical behavior. Three test images of each object have been captured from different positions, changing the shooting conditions (filter/no-filter) and the image processing (no processing/HDR processing), in order to have the same 3 camera orientations with different optical and digital pre-processing, and applying the same automated process to each photo set.

  4. Research on the infrared image processing algorithm based on FPGA

    NASA Astrophysics Data System (ADS)

    Xin, Li

    2014-11-01

    Recent years, infrared guidance technology has more and more applications in the field of precise guidance, because it is not limited by the night or the meteorology.The development of infrared guidance technology depends on the infrared image processing technology.This paper introduces an algorithm for infrared image nonuniformity correction based in FPGA. It uses multiplication instead of division and adopts efficient pipeline technology to reduce the system logic resource usage and improve efficiency of the system.Because infrared imaging is influenced by environmental temperature, this pape proposes an infrared nonuniformity correction algorithm with the compensation if environment temperature. This algorithm is very effective to reduce the influence of the environment temperature on infrared imaging. This infrared image processing system for infrared imaging laid a foundation for the application of the infrared guidance in the field of precise guidance.

  5. Image Processing Chapter 9Chapter 9

    E-print Network

    Wu, Xiaolin

    for extracting image components that are useful in representation and description · Language of morphology: setA c c a z for a A= = + 4 Dilation & Erosion · Dilation: · Obtain the reflection of B and shift it by z. · Dilation of A by B is the set of all displacements z such that B^ and A overlap at least one

  6. SVD spectral feature of image processing

    Microsoft Academic Search

    Deshen Xia; Hua Li; Yong Qiu

    1996-01-01

    Since Golub and Reinsch proposed the singular value decomposition (SVD) algorithm in 1970, SVD first became an effective method to the least square problems. Recently, SVD has been successfully applied in many fields, such as image data compression, feature extraction and so on. This paper discourses on the singular value spectral sequence (SVSS), gives the connotation and application of SVSS

  7. Assoc. Prof. Dr. Cem nsalan Image Processing

    E-print Network

    Ünsalan, Cem

    Intensity transformations and spatial filtering Filtering in the frequency domain Image restoration;Lowpass Filters Filtering in the Frequency Domain #12;Ideal filter response Ideal filter Lowpass Filters Filtering in the Frequency Domain #12;Butterworth filter response Butterworth filter Lowpass Filters

  8. University Image: An Information Processing Perspective.

    ERIC Educational Resources Information Center

    Parameswaran, Ravi; Glowacka, Aleksandra E.

    1995-01-01

    A study investigated the perceptions of human resource managers (n=243) concerning graduates from 9 area colleges, using 40 criteria to differentiate potential employees. The results support use of the methodology by colleges and universities to investigate factors contributing to institutional image within the business community. (MSE)

  9. Image processing for weather satellite cloud segmentation

    Microsoft Academic Search

    I. J. H. Leung; J. E. Jordan

    1995-01-01

    Image segmentation of weather satellite imagery is an important first step in an automated weather forecasting system. Accurate cloud extraction is also important in the determination of solar radiative transfer in atmospheric research, where satellite observations are used as inputs to global climate models to predict climatic change. Most of the current cloud extraction algorithms tend to be quite complicated

  10. Systematic processing of Mars Express HRSC image mosaic quadrangles

    NASA Astrophysics Data System (ADS)

    Michael, Greg; Walter, Sebastian; McGuire, Patrick; Kneissl, Thomas; van Gasselt, Stephan; Gross, Christoph; Schreiner, Bjoern; Zuschneid, Wilhelm

    2015-04-01

    Mars Express HRSC image strips show varying brightnesses caused by differing illumination and atmospheric conditions. Lambert correction improves the situation, but not sufficiently for a visually consistent mosaic. In the absence of a systematically applicable correction for atmospheric effects, we demonstrate a technique to provide image equalisation using a brightness reference map, and show the first processed MC-30 quadrangles from a programme to produce a global HRSC image mosaic.

  11. Preprint submitted to SAMPLING THEORY IN SIGNAL AND IMAGE PROCESSING

    E-print Network

    Bidegaray, Brigitte

    Preprint submitted to SAMPLING THEORY IN SIGNAL AND IMAGE PROCESSING DVI file produced on October issue in signal process- ing for mobile applications. We investigate the link between the smooth- ness the power consumption of signal processing systems is the reduction of the number of samples. Non uniform

  12. Modelling and Simulation of Images by Reciprocal Processes

    Microsoft Academic Search

    Giorgio Picci; Francesca Carli

    2008-01-01

    In this paper we propose an approach to image modelling and simulation, by a simple class of linear constant parameter stochastic models known as stationary rciprocal processes. These processes can be seen as a special class of Gibbs-Markov random fields. Stationary reciprocal processes admit constant parameter descriptor type representations of a certain kind which can be seen as a natural

  13. Cultural diversity process improves organizational community in urban teaching medical center.

    PubMed

    Carter, R; Spence, M M

    1996-01-01

    An urban teaching facility with nearly 3,000 employees had communication problems associated with race, gender and other cultural differences. It also competed for health care dollars and faced possible reduction in federal funding. The medical center instituted mandatory training in cultural diversity and customer service-and integrated the training process with the hospital's overall quality improvement plan and marketing strategy. The integrated approach affected the bottom line-Hurley's patient base has increased, and the medical center operates in the black. Training in cultural diversity and customer service is an effective tool to improve employee communication and improve financial outlook. PMID:9204821

  14. Fundus Image Processing System For Early Detection Of Glaucoma

    NASA Astrophysics Data System (ADS)

    Whiteside, S.; Mitra, S.; Krile, T. F.; Shihab, Z.

    1986-12-01

    An image processing system based on a MC 68000 microprocessor has been developed for analysis of fundus photographs. This personal computer based system has specific image enhancement capabilities comparable to existing large scale systems. Basic enhancement of fundus images consists of histogram modification or kernel convolution techniques to determine regions of specific interest such as textural difference in the nerve fiber layer or cupping of the optic nerve head. Fast Fourier transforms and filtering techniques are then utilized for specific regions of the original image. Textural difference in the nerve fiber layers are further highlighted using either interactive histogram modification or pseudocolor mappings. Menu driven software allows review of the steps applied, creating a feedback mechanism for optimum display of the fundus image. A wider noise margin than that of digitized fundus photographs can be obtained by direct fundus imaging. The present fundus image processing system clearly provides us with quantitative and detailed techniques of assessing textural changes in the fundus photographs of glaucoma patients and suspects for better classification and early detection of glaucoma. The versatility and computing capability of the system make it also suitable for other applications such as multidimensional image processing and image analysis.

  15. Digital image processing and analysis for activated sludge wastewater treatment.

    PubMed

    Khan, Muhammad Burhan; Lee, Xue Yong; Nisar, Humaira; Ng, Choon Aun; Yeap, Kim Ho; Malik, Aamir Saeed

    2015-01-01

    Activated sludge system is generally used in wastewater treatment plants for processing domestic influent. Conventionally the activated sludge wastewater treatment is monitored by measuring physico-chemical parameters like total suspended solids (TSSol), sludge volume index (SVI) and chemical oxygen demand (COD) etc. For the measurement, tests are conducted in the laboratory, which take many hours to give the final measurement. Digital image processing and analysis offers a better alternative not only to monitor and characterize the current state of activated sludge but also to predict the future state. The characterization by image processing and analysis is done by correlating the time evolution of parameters extracted by image analysis of floc and filaments with the physico-chemical parameters. This chapter briefly reviews the activated sludge wastewater treatment; and, procedures of image acquisition, preprocessing, segmentation and analysis in the specific context of activated sludge wastewater treatment. In the latter part additional procedures like z-stacking, image stitching are introduced for wastewater image preprocessing, which are not previously used in the context of activated sludge. Different preprocessing and segmentation techniques are proposed, along with the survey of imaging procedures reported in the literature. Finally the image analysis based morphological parameters and correlation of the parameters with regard to monitoring and prediction of activated sludge are discussed. Hence it is observed that image analysis can play a very useful role in the monitoring of activated sludge wastewater treatment plants. PMID:25381111

  16. Computer Vision, Graphics, and Image Processing 40 (1987) 250-266 1 Computer Vision, Graphics, and Image Processing 40 (1987) 250-266 2

    E-print Network

    Murray, David

    1987-01-01

    Computer Vision, Graphics, and Image Processing 40 (1987) 250-266 1 #12;Computer Vision, Graphics, and Image Processing 40 (1987) 250-266 2 #12;Computer Vision, Graphics, and Image Processing 40 (1987) 250-266 3 #12;Computer Vision, Graphics, and Image Processing 40 (1987) 250-266 4 #12;Computer Vision

  17. Parallel image processing on a shared-memory multiprocessor

    SciTech Connect

    Khan, M.S.R.

    1984-01-01

    The objective of the research work associated with this thesis has been to investigate parallel image processing techniques on an M.I.M.D (Multiple Instruction-stream Multiple Data-stream) type parallel computer. A number of commonly used low level image processing algorithms have been implemented utilising two different forms of parallelisms on the multimicroprocessor CYBA-M, which has a direct shared memory (DSM) architecture. Results have shown that,'Image' parallelism, which involves assigning groups of pixels to different processors for concurrent processing, is the more efficient implementation for such image processing operations. To increase processing efficiency by distributing processing load evenly among the processors, static and dynamic load allocation methods have been studied. A dynamic load allocation algorithm used with Image parallelism has been developed which has proved to be efficient, flexible and applicable to both feature-dependent and feature independent operations. It has been shown that by selecting the optimum load-size for a particular image processing operation, overheads can be kept to a minimum, resulting in maximum efficiency.

  18. Robust individual template pipeline processing for longitudinal MR images

    E-print Network

    Paris-Sud XI, Université de

    Robust individual template pipeline processing for longitudinal MR images N. Guizard1 , V.S. Fonov1 3 LaBRI, CNRS (UMR 5800), Bordeaux, France 4 Center of Functionally Integrative Neuroscience, Aarhus devel- oped a specific pipeline for longitudinal brain image analysis. To avoid any bias, an individual

  19. Image processing in automated measurements of raindrop size and distribution

    Microsoft Academic Search

    Paulo Estevão Cruvinel; Sidney Rosa Vieira; Silvio Crestana; Edson Roberto Minatel; Marcos Luiz Mucheroni; André Torre Neto

    1999-01-01

    A rapid method for evaluating raindrop size and size distribution has been developed. It is based on image processing with correlation analysis in the frequency domain. This technique has the advantage of being a direct measurement method that automatically identifies and counts raindrops. Calibration was carried out using a standard image with known raindrop sizes. Drop sizes, ranging from less

  20. Towards Efficient Parallel Image Processing on Cluster Grids Using GIMP

    Microsoft Academic Search

    Pawel Czarnul; Andrzej Ciereszko; Marcin Fraczak

    2004-01-01

    As it is not realistic to expect that all users, especially specialists in the graphic business, use complex low-level parallel programs to speed up image processing, we have developed a plugin for the highly acclaimed GIMP which enables to invoke a series of lter operations in a pipeline in parallel on a set of images loaded by the plugin. We

  1. CNN Image Processing on a Xilinx Virtex-II 6000

    Microsoft Academic Search

    Suleyman Malki; Lambert Spaanenburg

    Image processing is one of the popular applications of Cellular Neural Networks. Macro enriched field-programmable gate-arrays can be used to realize such systems on silicon. The paper discusses a pipelined implementation that supports the handling of gray-level images at 180 to 240 Mpixels per second by exploiting the Virtex-II macros to spatially unroll the local feedback.

  2. A software architecture for user transparent parallel image processing

    Microsoft Academic Search

    Frank J. Seinstra; Dennis Koelma; Jan-mark Geusebroek

    2002-01-01

    This paper describes a software architecture that allows image processing researchers to de- velop parallel applications in a transparent manner. The architecture's main component is an extensive library of data parallel low level image operations capable of running on homoge- neous distributed memory MIMD-style multicomputers. Since the library has an application programming interface identical to that of an existing sequential

  3. Using spectral distances for speedup in hyperspectral image processing

    Microsoft Academic Search

    S. A. Robila

    2005-01-01

    This paper investigates the efficiency of spectral screening as a tool for speedup in hyperspectral image processing. Spectral screening is a technique for reducing the hyperspectral data to a representative subset of spectra. The subset is formed such that any two spectra in it are dissimilar and, for any spectrum in the original image cube, there is a similar spectrum

  4. Recent Advances in Techniques for Hyperspectral Image Processing

    Microsoft Academic Search

    A. Plaza; J. A. Benediktsson; J. Boardman; J. Brazile; L. Bruzzone; G. Camps-Valls; J. Chanussot; M. Fauvel; P. Gamba; A. Gualtieri; M. Marconcini; J. C. Tilton; G. Trianni

    2007-01-01

    Imaging spectroscopy, also known as hyperspectral imaging, has been transformed in less than thirty years from being a sparse research tool into a commodity product available to a broad user community. Currently, there is a need for standardized data processing techniques able to take into account the special properties of hyperspec- tral data. In this paper, we provide a seminal

  5. University Faculty Describe Their Use of Moving Images in Teaching and Learning and Their Perceptions of the Library's Role in That Use

    ERIC Educational Resources Information Center

    Otto, Jane Johnson

    2014-01-01

    The moving image plays a significant role in teaching and learning; faculty in a variety of disciplines consider it a crucial component of their coursework. Yet little has been written about how faculty identify, obtain, and use these resources and what role the library plays. This study, which engaged teaching faculty in a dialogue with library…

  6. Color image processing in Canon's digital camera

    NASA Astrophysics Data System (ADS)

    Udagawa, Yoshiro

    1996-03-01

    A new TTL white balance method is studied to get a good white balance for a wide variety of illumination in digital camera system. Parameters of white balance are decided only by analyzing a single shot of images in this method. A locus of a white point under various illumination is plotted in a certain 2D color space, and the point in the space that is assumed to correspond to a white point in the scene is compared to the locus. Four complementary color filters (cyan, yellow, magenta and green) attached on a CCD imager generate four color signals, which are transformed by a 3 X 4 matrix into three of red, green and blue. The adaptive matrix method corresponding to the color temperature of illumination is compared to the fixed matrix method. Calculating the adaptive matrix is based on the Von Kries Law.

  7. A novel parallel architecture for real-time image processing

    NASA Astrophysics Data System (ADS)

    Hu, Junhong; Zhang, Tianxu; Zhong, Sheng; Chen, Xujun

    2009-10-01

    A novel DSP/FPGA-based parallel architecture for real-time image processing is presented in this paper, DSPs are the main processing unit and FPGAs are used to be logic units for image interface protocol, image processing, image display, synchronization communication portocol of DSPs and DSP's reprogramming interface of 422/485. The presented architecture is composed of two modules: the preprocessing module and the processing module, and the latter is extendable for better performance. Modules are connected by LINK communication port, whose LVDS protocol has the ability of anti-jamming. And DSP's programs can be updated easily by 422/485 with PC's serial port. Analysis and experiments result shows that the prototype with the proposed parallel architecture has many promising charactersitics such as powerful computing capability, broad data transfer bandwidth, and is easy to be extended and updated.

  8. Spatial processing for coherent noise reduction in ultrasonic imaging

    E-print Network

    Saniie, Jafar

    Spatial processing for coherent noise reduction in ultrasonic imaging NihatM. Bilgutay consideration. Conventional techniques that are capable of suppressingtime-varying (incoherent) noiseare of the spatially decorrelated signals is examined. The theoretical and experimental results indicate

  9. Breast cancer detection using image processing techniques

    Microsoft Academic Search

    T. C. Cahoon; M. A. Sutton; J. C. Bezdek

    2000-01-01

    We describe the use of segmentation with fuzzy models and classification by the crisp k-nearest neighbor (k-nn) algorithm for assisting breast cancer detection in digital mammograms. Our research utilizes images from the digital database for screening mammography. We show that supervised and unsupervised methods of segmentation, such as k-nn and fuzzy c-means, in digital mammograms will have high misclassification rates

  10. Image processing of underwater multispectral imagery

    USGS Publications Warehouse

    Zawada, D.G.

    2003-01-01

    Capturing in situ fluorescence images of marine organisms presents many technical challenges. The effects of the medium, as well as the particles and organisms within it, are intermixed with the desired signal. Methods for extracting and preparing the imagery for analysis are discussed in reference to a novel underwater imaging system called the low-light-level underwater multispectral imaging system (LUMIS). The instrument supports both uni- and multispectral collections, each of which is discussed in the context of an experimental application. In unispectral mode, LUMIS was used to investigate the spatial distribution of phytoplankton. A thin sheet of laser light (532 nm) induced chlorophyll fluorescence in the phytoplankton, which was recorded by LUMIS. Inhomogeneities in the light sheet led to the development of a beam-pattern-correction algorithm. Separating individual phytoplankton cells from a weak background fluorescence field required a two-step procedure consisting of edge detection followed by a series of binary morphological operations. In multispectral mode, LUMIS was used to investigate the bio-assay potential of fluorescent pigments in corals. Problems with the commercial optical-splitting device produced nonlinear distortions in the imagery. A tessellation algorithm, including an automated tie-point-selection procedure, was developed to correct the distortions. Only pixels corresponding to coral polyps were of interest for further analysis. Extraction of these pixels was performed by a dynamic global-thresholding algorithm.

  11. Multiparadigm Space Processing for Hyperspectral Imaging

    Microsoft Academic Search

    Adam Jacobs; Chris Conger; Alan D. George

    2008-01-01

    Projected demands for future space missions, where on-board sensor processing and autonomous control rapidly expand computational requirements, are outpacing technologies and trends in conventional embedded microprocessors. To achieve higher levels of performance as well as relative performance versus power consumption, new processing technologies are of increasing interest for space systems. Technologies such as reconfigurable computing based upon FPGAs and vector

  12. Solar Cell Crack Inspection by Image Processing

    Microsoft Academic Search

    Fu Zhuang; Zhao Yanzheng; Liu Yang; Cao Qixin; Chen Mingbo; Zhang Jun; Jay Lee

    2009-01-01

    The aircraft works in space with terrible circumstance far from the Earth, so it is necessary for the solar cell with the property of anti-radiation to perform bonding process. After bonding, an essential process to the solar cell assembly is to inspect the cracks on the edge or inside of the solar cell. To avoid utilizing the unqualified products and

  13. Solar cell crack inspection by image processing

    Microsoft Academic Search

    Fu Zhuang; Zhao Yanzheng; Liu Yang; Cao Qixin; Chen Mingbo; Zhang Jun; Jay Lee

    2004-01-01

    Spacecraft operate in a hostile environment, far from the Earth, so it is necessary for solar cells with anti-radiation properties to have a bonding process carried out on them. After bonding, an essential process for the solar cell assembly is to inspect for cracks on the edges or inside the solar cell. To avoid utilizing unqualified products and to improve

  14. SIMD architectures and algorithms for image processing and computer vision

    Microsoft Academic Search

    R. Cypher; J. L. C. Sanz

    1989-01-01

    The authors present a critical survey of parallel architectures and algorithms for image processing. The emphasis is on single-instruction-stream, multiple-data-stream (SIMD) computers with nonshared memory. A number of parallel architectures are discussed and compared. They fall into three categories: mesh-connected computers, pyramid computers, and hypercube and related computers. A set of seven image processing and computer vision tasks is selected,

  15. GLORIA image processing: The state of the art

    Microsoft Academic Search

    R. C. Searle; T. P. Bas; N. C. Mitchell; M. L. Somers; L. M. Parson; P. H. Patriat

    1990-01-01

    This chapter presents a summary of the image-processing techniques being used at present in the Institute of Oceanographic Sciences Deacon Laboratory's GLORIA long-range sidescan sonar system. It begins with a brief review of the development of GLORIA, and then describes in outline the present shipboard data acquisition, recording and replay system, including simple image-processing techniques that can be used on-board

  16. TOWARDS AUTOMATION IN ARCHITECTURAL PHOTOGRAMMETRY USING DIGITAL IMAGE PROCESSING

    Microsoft Academic Search

    ALBERT WIEDEMANN; VOLKER RODEHORST

    1997-01-01

    This paper describes some approaches towards an automation in architectural photogrammetry using digital image processing. We present techniques for semi-automatic 3D measurement and the application of digital image analysis to support the extraction of facade primitives. The proposed semi-automatic 3D measurement is used for the determination of tie points for the orientation and the interactive restitution process. The use of

  17. SIMD architectures and algorithms for image processing and computer vision

    SciTech Connect

    Cypher, R.; Sanz, J.L.C. (IBM Research Div., San Jose, CA (USA). Almaden Research Center)

    1989-12-01

    This paper presents a critical survey of parallel architectures and algorithms for image processing. The emphasis is on single instruction stream, multiple data stream (SIMD) computers with nonshared memory. A number of parallel architectures are discussed and compared. Also, an analysis of parallel algorithms for several pixel level, intermediate level, and high level image processing tasks is presented. The effects of architectural decisions on algorithms design are examined in detail.

  18. ELAS: A powerful, general purpose image processing package

    NASA Technical Reports Server (NTRS)

    Walters, David; Rickman, Douglas

    1991-01-01

    ELAS is a software package which has been utilized as an image processing tool for more than a decade. It has been the source of several commercial packages. Now available on UNIX workstations it is a very powerful, flexible set of software. Applications at Stennis Space Center have included a very wide range of areas including medicine, forestry, geology, ecological modeling, and sonar imagery. It remains one of the most powerful image processing packages available, either commercially or in the public domain.

  19. Optimization of image processing algorithms on mobile platforms

    Microsoft Academic Search

    Pramod Poudel; Mukul Shirvaikar

    2011-01-01

    This work presents a technique to optimize popular image processing algorithms on mobile platforms such as cell phones, net-books and personal digital assistants (PDAs). The increasing demand for video applications like context-aware computing on mobile embedded systems requires the use of computationally intensive image processing algorithms. The system engineer has a mandate to optimize them so as to meet real-time

  20. Application of decorrelation stretching method to hyperspectral fundus image processing

    NASA Astrophysics Data System (ADS)

    Nagaoka, T.; Nakamura, A.; Aizawa, K.; Kanazawa, M.; Kezuka, T.; Miura, M.; Usui, M.; Ohtsubo, S.; Sota, T.

    2007-02-01

    We have developed a near-infrared hyperspectral imaging system that can acquire both spectral and spatial data covering a 50-degree field at the fundus surface within 5 seconds. Single wavelength band reflectance images with bandwidth of 20 nm have demonstrated that choroidal vascular patterns can be clearly observed as bright images for the central wavelength ranging from 740 to 860 nm, while retinal blood vessels are seen as dark images for that ranging from 740 to 920 nm. It is desirable for clinical use to separate the choroidal vascular patterns image from the retinal blood vessels image. To this end, we have applied the decorrelation stretch to processing of spectral images. We have found the following. Original fundus spectral images have stripes noise. The decorrelation stretch emphasizes the noise and, thus, the noise has to be removed by, for example, DCT (Discrete Cosine Transform) filter beforehand. The choroidal vascular image can be successfully separated from the retinal vascular image. Furthermore, the macular is superimposed on the latter as it should be so from the viewpoint of anatomy. The result suggests that useful information may be extracted by combining hyperspectral images with the decorrelation stretch.

  1. Didactic Platform for Biomedical Signal Processing: Digital Image Processing

    Microsoft Academic Search

    E E de Souza; F M de Azevedo; J Marino-Neto

    Recent studies about Biomedical Engineering issues, which are subjects offered in Electrical Engineering under- graduate courses in Brazil, have shown a great lack of investment in this field. That was the main motivation in devel- oping a Didactic Platform for Biomedical Signal Processing (DPBSP) which consists in a generalized and modular biomedical acquisition board, software to visualize and processing signals

  2. The Process and Practice of the Teaching Profession and Their Implications for a Teaching Council in Lesotho.

    ERIC Educational Resources Information Center

    Lefoka, J. Pulane

    1997-01-01

    Examines implications of initiating a teaching council in Lesotho, noting barriers to this action and discussing the influence on teacher education of several institutions (e.g., teacher education programs, government, and church). The paper notes divisions among teacher organizations and the government, and examines Lesotho's political context…

  3. Pre-Instruction, Play-Teach-Play, Processing the Experience. The Three Little P's: Teaching Affective Skills in Physical Education

    ERIC Educational Resources Information Center

    Kuhrasch, Cindy

    2007-01-01

    Physical education has long been recognized as a forum through which affective skills can be successfully introduced and practiced. Solomon found that current research supports the contention that physical education experiences provide a prime setting for promoting character development. This article describes a three-phase program for teaching

  4. Particle sizing in rocket motor studies utilizing hologram image processing

    NASA Technical Reports Server (NTRS)

    Netzer, David; Powers, John

    1987-01-01

    A technique of obtaining particle size information from holograms of combustion products is described. The holograms are obtained with a pulsed ruby laser through windows in a combustion chamber. The reconstruction is done with a krypton laser with the real image being viewed through a microscope. The particle size information is measured with a Quantimet 720 image processing system which can discriminate various features and perform measurements of the portions of interest in the image. Various problems that arise in the technique are discussed, especially those that are a consequence of the speckle due to the diffuse illumination used in the recording process.

  5. Simplified image processing system for softcopy presentation 

    E-print Network

    Corleto-Mena, Jose Gilberto

    1984-01-01

    , as well as prior to the TTC mapping. However, the shift and scale operation and the TTC mapping must be properly modified. So, given sn interpolated, filtered and exponentially mapped im- age f, (i, j), the modified shift and scale operation would...)) I =2 ? 22=2 ? 2 r+2 2+2 = g Q (-p(X. f(, j))j ' " ' I =r ? 2rr=i ? 2 (5. 21) Thus, il. can be concluded that after exponentially mapping the interpolated image, il can 1&e filtered as indicaled by the modified filtering operation in lhe above...

  6. An analog image processing LSI employing scanning line-parallel processing

    Microsoft Academic Search

    Teruyasu Taguchi; Makoto Ogawa; Tadashi Shibata

    2003-01-01

    A 64 × 64-pixel analog image filtering processor has been developed. The chip employs the scanning line-parallel processing architecture in order to realize a very fast execution of image filtering operation. In addition, any typical filtering kernels are programmable in this architecture. The line parallel processing is carried out for the pixels in a single row or the pixels in

  7. Duke Graduate School SRF Upload Process into Image Now SRF Upload Process

    E-print Network

    Reif, John H.

    Duke Graduate School SRF Upload Process into Image Now #12;SRF Upload Process The following document will outline the steps needed to upload the guaranteed SRF application form into the Image Now. It does not pertain to the competitive SRFs for students in their third years and beyond. The SRF form

  8. Advanced Image Processing Techniques for Extracting Regions of Interest using Multimode IR Processing

    E-print Network

    Havlicek, Joebob

    of multispectral and multiple mode imaging for object recognition in commercial applications. Cyan purchased a dual-band and multiple pre-processed data bands from Focal Plane Array (FPA) sensors. We have developed image processing persistence, and fixed pattern noise in the FPA instead of the artifact being carried far down the signal

  9. 882 IEEE TRANSACTIONS ON IMAGE PROCESSING, VOL. 12, NO. 8, AUGUST 2003 Simultaneous Structure and Texture Image Inpainting

    E-print Network

    Vese, Luminita A.

    882 IEEE TRANSACTIONS ON IMAGE PROCESSING, VOL. 12, NO. 8, AUGUST 2003 Simultaneous Structure is a very important topic in image processing, with applications including image coding and wireless image and Texture Image Inpainting Marcelo Bertalmio, Luminita Vese, Guillermo Sapiro, Member, IEEE, and Stanley

  10. High resolution x-ray medical sequential image acquisition and processing system based on PCI interface

    Microsoft Academic Search

    Dongming Lu; Qian Chen; Guohua Gu

    2003-01-01

    In the field of medical application, it is of great importance to adopt digital image processing technique. Based on the characteristics of medical image, we introduced the digital image processing method to the X-ray imaging system, and developed a high resolution x-ray medical sequential image acquisition and processing system that employs image enhancer and CCD. This system consists of three

  11. High Dynamic Range Processing for Magnetic Resonance Imaging

    PubMed Central

    Sukerkar, Preeti A.; Meade, Thomas J.

    2013-01-01

    Purpose To minimize feature loss in T1- and T2-weighted MRI by merging multiple MR images acquired at different TR and TE to generate an image with increased dynamic range. Materials and Methods High Dynamic Range (HDR) processing techniques from the field of photography were applied to a series of acquired MR images. Specifically, a method to parameterize the algorithm for MRI data was developed and tested. T1- and T2-weighted images of a number of contrast agent phantoms and a live mouse were acquired with varying TR and TE parameters. The images were computationally merged to produce HDR-MR images. All acquisitions were performed on a 7.05 T Bruker PharmaScan with a multi-echo spin echo pulse sequence. Results HDR-MRI delineated bright and dark features that were either saturated or indistinguishable from background in standard T1- and T2-weighted MRI. The increased dynamic range preserved intensity gradation over a larger range of T1 and T2 in phantoms and revealed more anatomical features in vivo. Conclusions We have developed and tested a method to apply HDR processing to MR images. The increased dynamic range of HDR-MR images as compared to standard T1- and T2-weighted images minimizes feature loss caused by magnetization recovery or low SNR. PMID:24250788

  12. Digital image processing: a primer for JVIR authors and readers: part 2: digital image acquisition.

    PubMed

    LaBerge, Jeanne M; Andriole, Katherine P

    2003-11-01

    This is the second installment of a three-part series on digital image processing intended to prepare authors for online submission of manuscripts. In the first article of the series, we reviewed the fundamentals of digital image architecture. In this article, we describe the ways that an author can import digital images to the computer desktop. We explore the modern imaging network and explain how to import picture archiving and communications systems (PACS) images to the desktop. Options and techniques for producing digital hard copy film are also presented. PMID:14605101

  13. Applications of nuclear magnetic resonance imaging in process engineering

    NASA Astrophysics Data System (ADS)

    Gladden, Lynn F.; Alexander, Paul

    1996-03-01

    During the past decade, the application of nuclear magnetic resonance (NMR) imaging techniques to problems of relevance to the process industries has been identified. The particular strengths of NMR techniques are their ability to distinguish between different chemical species and to yield information simultaneously on the structure, concentration distribution and flow processes occurring within a given process unit. In this paper, examples of specific applications in the areas of materials and food processing, transport in reactors and two-phase flow are discussed. One specific study, that of the internal structure of a packed column, is considered in detail. This example is reported to illustrate the extent of new, quantitative information of generic importance to many processing operations that can be obtained using NMR imaging in combination with image analysis.

  14. Parallel perfusion imaging processing using GPGPU

    PubMed Central

    Zhu, Fan; Gonzalez, David Rodriguez; Carpenter, Trevor; Atkinson, Malcolm; Wardlaw, Joanna

    2012-01-01

    Background and purpose The objective of brain perfusion quantification is to generate parametric maps of relevant hemodynamic quantities such as cerebral blood flow (CBF), cerebral blood volume (CBV) and mean transit time (MTT) that can be used in diagnosis of acute stroke. These calculations involve deconvolution operations that can be very computationally expensive when using local Arterial Input Functions (AIF). As time is vitally important in the case of acute stroke, reducing the analysis time will reduce the number of brain cells damaged and increase the potential for recovery. Methods GPUs originated as graphics generation dedicated co-processors, but modern GPUs have evolved to become a more general processor capable of executing scientific computations. It provides a highly parallel computing environment due to its large number of computing cores and constitutes an affordable high performance computing method. In this paper, we will present the implementation of a deconvolution algorithm for brain perfusion quantification on GPGPU (General Purpose Graphics Processor Units) using the CUDA programming model. We present the serial and parallel implementations of such algorithms and the evaluation of the performance gains using GPUs. Results Our method has gained a 5.56 and 3.75 speedup for CT and MR images respectively. Conclusions It seems that using GPGPU is a desirable approach in perfusion imaging analysis, which does not harm the quality of cerebral hemodynamic maps but delivers results faster than the traditional computation. PMID:22824549

  15. 2004 International Conference on Image Processing (ICIP) DOCUMENT IMAGE SECRET SHARING USING BIT-LEVEL PROCESSING

    E-print Network

    Plataniotis, Konstantinos N.

    on an overhead projector. If the digital document contains computer-generated artworks such as gray authentication and validity. such a B-bit image is first converted using the image halftoning techniques [7

  16. Digital image processing of bone - Problems and potentials

    NASA Technical Reports Server (NTRS)

    Morey, E. R.; Wronski, T. J.

    1980-01-01

    The development of a digital image processing system for bone histomorphometry and fluorescent marker monitoring is discussed. The system in question is capable of making measurements of UV or light microscope features on a video screen with either video or computer-generated images, and comprises a microscope, low-light-level video camera, video digitizer and display terminal, color monitor, and PDP 11/34 computer. Capabilities demonstrated in the analysis of an undecalcified rat tibia include the measurement of perimeter and total bone area, and the generation of microscope images, false color images, digitized images and contoured images for further analysis. Software development will be based on an existing software library, specifically the mini-VICAR system developed at JPL. It is noted that the potentials of the system in terms of speed and reliability far exceed any problems associated with hardware and software development.

  17. DEVELOPMENT OF IMAGE PROCESSING APPLICATIONS WITHIN A COOPERATIVE KNOWLEDGE-BASED WORKBENCH

    E-print Network

    Boyer, Edmond

    DEVELOPMENT OF IMAGE PROCESSING APPLICATIONS WITHIN A COOPERATIVE KNOWLEDGE-BASED WORKBENCH Solving an Image Processing problem involves three main categories of experts: experts from the domain of application (biologists, geographers...), Image Processing experts and designer-programmers. Domain experts

  18. Image data processing system requirements study. Volume 1: Analysis. [for Earth Resources Survey Program

    NASA Technical Reports Server (NTRS)

    Honikman, T.; Mcmahon, E.; Miller, E.; Pietrzak, L.; Yorsz, W.

    1973-01-01

    Digital image processing, image recorders, high-density digital data recorders, and data system element processing for use in an Earth Resources Survey image data processing system are studied. Loading to various ERS systems is also estimated by simulation.

  19. An image processing pipeline to detect and segment nuclei in muscle fiber microscopic images.

    PubMed

    Guo, Yanen; Xu, Xiaoyin; Wang, Yuanyuan; Wang, Yaming; Xia, Shunren; Yang, Zhong

    2014-08-01

    Muscle fiber images play an important role in the medical diagnosis and treatment of many muscular diseases. The number of nuclei in skeletal muscle fiber images is a key bio-marker of the diagnosis of muscular dystrophy. In nuclei segmentation one primary challenge is to correctly separate the clustered nuclei. In this article, we developed an image processing pipeline to automatically detect, segment, and analyze nuclei in microscopic image of muscle fibers. The pipeline consists of image pre-processing, identification of isolated nuclei, identification and segmentation of clustered nuclei, and quantitative analysis. Nuclei are initially extracted from background by using local Otsu's threshold. Based on analysis of morphological features of the isolated nuclei, including their areas, compactness, and major axis lengths, a Bayesian network is trained and applied to identify isolated nuclei from clustered nuclei and artifacts in all the images. Then a two-step refined watershed algorithm is applied to segment clustered nuclei. After segmentation, the nuclei can be quantified for statistical analysis. Comparing the segmented results with those of manual analysis and an existing technique, we find that our proposed image processing pipeline achieves good performance with high accuracy and precision. The presented image processing pipeline can therefore help biologists increase their throughput and objectivity in analyzing large numbers of nuclei in muscle fiber images. PMID:24777764

  20. UWIT: Underwater Image Toolbox for Optical Image Processing and Mosaicking in MATLAB Ryan Eustice, Oscar Pizarro, Hanumant Singh, Jonathan Howland

    E-print Network

    Eustice, Ryan

    UWIT: Underwater Image Toolbox for Optical Image Processing and Mosaicking in MATLAB Ryan Eustice--This paper shows results from our development of an extended MATLAB image processing toolbox, which implements some useful optical image processing and mosaicking algorithms found in the literature. We

  1. 794 IEEE TRANSACTIONS ON IMAGE PROCESSING, VOL. 6, NO. 6, JUNE 1997 Fast Downscaled Inverses for Images Compressed

    E-print Network

    de Queiroz, Ricardo L.

    794 IEEE TRANSACTIONS ON IMAGE PROCESSING, VOL. 6, NO. 6, JUNE 1997 Fast Downscaled Inverses. INTRODUCTION IMAGE processing has become very popular since images were brought into the desktop computer resolution image. Another reason is the fact that it may be a very slow process, as more pixels than

  2. The SIVA Image Processing Demos Rajashekar, Bovik, & Nair Page 1 of 20

    E-print Network

    Rajashekar, Umesh

    The SIVA Image Processing Demos Rajashekar, Bovik, & Nair Page 1 of 20 The SIVA Image Processing have performed some form of image processing. Irrespective of their familiarity with the theory of image processing, most people have used image editing software such as Adobe Photoshop, GIMP, Picasa

  3. ENG EC520: Digital Image Processing and Communications 2010-2011 Catalog Data

    E-print Network

    Goldberg, Bennett

    ENG EC520: Digital Image Processing and Communications 2010-2011 Catalog Data: Digital Image, "Multidimensional Signal, Image and Video Processing", Academic Press 2006 References: A. Jain, "Fundamentals of Digital Image Processing", Prentice Hall A. Bovik Ed., "Handbook of Image and Video Processing", Academic

  4. Teaching Students About the Process of Science: Using Google to Collect and Analyze Student Lab Measurements

    NASA Astrophysics Data System (ADS)

    Larson, Kristen; Stewart, Jim

    2010-03-01

    The process of science necessarily includes critical analysis of uncertainty in repeated measurements. We demonstrate how the measurements that students make can be collected and analyzed in real time with Google Docs. Showing students how their measurements compare to the rest of the class provides a valuable opportunity to teach about uncertainty and the process of science. Student work can be compiled by the instructor after the fact, but Google makes it easy for students to submit their measurements via a web form and instantly see how their measurements fit with the rest of the class. Analysis, including histograms, fits, and virtually anything that can be done with a spreadsheet, is updated automatically and available to students. We show how the tools can be readily customized and implemented seamlessly with two examples from large undergraduate classes: measurement of the acceleration due to gravity in introductory physics lab, and measurement of the Hubble constant in introductory astronomy.

  5. Demodulation signal processing in multiphoton imaging

    Microsoft Academic Search

    Walter G. Fisher; Eric A. Wachter; David W. Piston

    2002-01-01

    Multiphoton laser scanning microscopy offers numerous advantages, but sensitivity can be seriously affected by contamination from ambient room light. Typically, this forces experiments to be performed in an absolutely dark room. Since mode-locked lasers are used to generate detectable signals, signal-processing can be used to avoid such problems by taking advantage of the pulsed characteristics of such lasers. Demodulation of

  6. Image processing system performance prediction and product quality evaluation

    NASA Technical Reports Server (NTRS)

    Stein, E. K.; Hammill, H. B. (principal investigators)

    1976-01-01

    The author has identified the following significant results. A new technique for image processing system performance prediction and product quality evaluation was developed. It was entirely objective, quantitative, and general, and should prove useful in system design and quality control. The technique and its application to determination of quality control procedures for the Earth Resources Technology Satellite NASA Data Processing Facility are described.

  7. Image processing for distance diagnosis in pest management

    Microsoft Academic Search

    Y. Koumpouros; B. D. Mahaman; M. Maliappis; H. C. Passam; A. B. Sideridis; V. Zorkadis

    2004-01-01

    Image processing for pest management (IPPM) is an interactive distance diagnostic tool for the diagnosis and identification of diseases and insects. The objective of the IPPM was the automation of the diagnostic process based on interaction of growers and experts via the Internet, to enable pest diagnosis in crops at the earliest possible stage, using photographs produced by growers, coupled

  8. Interest of image processing in cell biology and immunology.

    PubMed

    Sabri, S; Richelme, F; Pierres, A; Benoliel, A M; Bongrand, P

    1997-10-13

    Microscopy is a basic tool for cell biologists. Recent progress of electronics and computer science made powerful methodologies for digital processing of microscopic images easily available. These methods allowed impressive increase of the power of conventional microscopy. Dramatic image enhancement may be achieved by combination of filtering techniques, computer-based deblurring and contrast enhancement. Quantitative treatment of digitized images allows absolute determination of the density of different components of the observed sample, including antigens, intracellular calcium and pH. Morphometric studies are also greatly facilitated by image processing techniques. The capture of fast phenomena may be performed by transfer of small portion of microscopic images into computer memory as well as particular use of confocal microscopy. Finally, improved display of experimental data through coded colors or other procedures may enhance the amount of information that can be conveyed by visual examination of microscopical images. The purpose of the present review is to describe the basic principles of image processing and exemplify the power of this approach with a variety of illustrated applications to conventional, fluorescence or electron microscopy as well as confocal microscopy. PMID:9433456

  9. Standardizing PhenoCam Image Processing and Data Products

    NASA Astrophysics Data System (ADS)

    Milliman, T. E.; Richardson, A. D.; Klosterman, S.; Gray, J. M.; Hufkens, K.; Aubrecht, D.; Chen, M.; Friedl, M. A.

    2014-12-01

    The PhenoCam Network (http://phenocam.unh.edu) contains an archive of imagery from digital webcams to be used for scientific studies of phenological processes of vegetation. The image archive continues to grow and currently has over 4.8 million images representing 850 site-years of data. Time series of broadband reflectance (e.g., red, green, blue, infrared bands) and derivative vegetation indices (e.g. green chromatic coordinate or GCC) are calculated for regions of interest (ROI) within each image series. These time series form the basis for subsequent analysis, such as spring and autumn transition date extraction (using curvature analysis techniques) and modeling the climate-phenology relationship. Processing is relatively straightforward but time consuming, with some sites having more than 100,000 images available. While the PhenoCam Network distributes the original image data, it is our goal to provide higher-level vegetation phenology products, generated in a standardized way, to encourage use of the data without the need to download and analyze individual images. We describe here the details of the standard image processing procedures, and also provide a description of the products that will be available for download. Products currently in development include an "all-image" file, which contains a statistical summary of the red, green and blue bands over the pixels in predefined ROI's for each image from a site. This product is used to generate 1-day and 3-day temporal aggregates with 90th percentile values of GCC for the specified time-periodwith standard image selection/filtering criteria applied. Sample software (in python, R, MATLAB) that can be used to read in and plot these products will also be described.

  10. Removing Adherent Noise from Image Sequences in Rainy Weather by Spatio-Temporal Image Processing

    Microsoft Academic Search

    Isao Fukuchi; Atsushi Yamashita; Toru Kaneko; Kenjiro T. Miura

    2008-01-01

    We have developed a method that can remove view-disturbing noise from image sequences by spatio-temporal image processing. In outdoor environments on rainy days, pictures taken by a camera are often degraded because of adherent noise, such as water drops on the surface of the lens-protecting glass of the camera. To solve this problem, our method uses image sequences captured with

  11. Three-Dimensional Image Sensing, Visualization, and Processing Using Integral Imaging

    Microsoft Academic Search

    ADRIAN STERN; BAHRAM JAVIDI

    2006-01-01

    Three dimensional (3-D) imaging and display have been subjects of much research due to their diverse benefits and applications. However, due to the necessity to capture, record, process, and display an enormous amount of optical data for producing high-quality 3-D images, the developed 3-D imaging techniques were forced to compromise their performances (e.g., gave up the continuous parallax, restricting to

  12. Enhancement of structure images of interstellar diamond microcrystals by image processing

    NASA Technical Reports Server (NTRS)

    O'Keefe, Michael A.; Hetherington, Crispin; Turner, John; Blake, David; Freund, Friedemann

    1988-01-01

    Image processed high resolution TEM images of diamond crystals found in oxidized acid residues of carbonaceous chondrites are presented. Two models of the origin of the diamonds are discussed. The model proposed by Lewis et al. (1987) supposes that the diamonds formed under low pressure conditions, whereas that of Blake et al (1988) suggests that the diamonds formed due to particle-particle collisions behind supernova shock waves. The TEM images of the diamond presented support the high pressure model.

  13. Management Of Airborne Reconnaissance Images Through Real-Time Processing

    NASA Astrophysics Data System (ADS)

    Endsley, Neil H.

    1985-12-01

    Digital reconnaissance images gathered by low-altitude over-flights with resolutions on the order of a few feet and fields of view up to 120 degrees can generate millions of pixels per second. Storing this data in-flight, transmitting it to the ground, and analyzing it presents significant problems to the tactical community. One potential solution is in-flight preview and pruning of the data where an operator keeps or transmits only those image segments which on first view contain potential intelligence data. To do this, the images must be presented to the operator in a geometrically correct form. Wide-angle dis-tortion, distortions induced by yaw, pitch, roll and altitude variations, and distortions due to non-ideal alignment of the focal plane array must be removed so the operator can quickly assess the scene content and make decisions on which image segments to keep. When multiple sensors are used with a common field of view, they must be mutually coregistered to permit multispectral or multimode processing to exploit these rich data dimensions. In addition, the operator should be able to alter the apparent point of view of the image, i.e., be able to zoom in and out, rotate, and roam through the displayed field of view while maintaining geometric and radiometric precision. These disparate requirements have a common feature in the ability to perform real-time image geometry manipulation. The role of image geometry manipulation, or image warping, is reviewed and a "strawman" system dis-cussed which incorporates the Pipelined Resampling Processor (PRP). The PRP is a real-time image warping processor discussed at this conference in previous years"2'3". Actual results from the PRP prototype are presented. In addition, other image processing aids such as image enhancement and object classification are discussed as they apply to reconnaissance applications.

  14. Octahedral transforms for 3-D image processing.

    PubMed

    Lenz, Reiner; Latorre Carmona, Pedro

    2009-12-01

    The octahedral group is one of the finite subgroups of the rotation group in 3-D Euclidean space and a symmetry group of the cubic grid. Compression and filtering of 3-D volumes are given as application examples of its representation theory. We give an overview over the finite subgroups of the 3-D rotation group and their classification. We summarize properties of the octahedral group and basic results from its representation theory. Wide-sense stationary processes are processes with group theoretical symmetries whose principal components are closely related to the representation theory of their symmetry group. Linear filter systems are defined as projection operators and symmetry-based filter systems are generalizations of the Fourier transforms. The algorithms are implemented in Maple/Matlab functions and worksheets. In the experimental part, we use two publicly available MRI volumes. It is shown that the assumption of wide-sense stationarity is realistic and the true principal components of the correlation matrix are very well approximated by the group theoretically predicted structure. We illustrate the nature of the different types of filter systems, their invariance and transformation properties. Finally, we show how thresholding in the transform domain can be used in 3-D signal processing. PMID:19674954

  15. Data processing of MIPSGAL 24 micron images

    NASA Astrophysics Data System (ADS)

    Mizuno, Donald R.; Noriega-Crespo, A.; Padgett, D. L.; Carey, S. J.; Paladini, R.; Shenoy, S.; Kraemer, K.; Kuchar, T.; Marleau, F.; Price, S.

    2006-12-01

    We describe the modifications and corrections that we have made to the standard SSC pipeline-produced, 24 micron basic calibrated data (BCDs) for the MIPSGAL survey. The 24 micron data suffers from numerous artifacts, many of which are caused by scanning across bright point sources and compact extended emission. Generally these can be classified into two types: latency effects, in which there are short timescale elevations and long timescale depressions in pixels that have experienced high flux levels; and global effects wherein entire columns or rows of pixels have level offsets due to the presence of a bright source on or adjacent to the array. We also account for a residual bias pattern in the array which is similar in nature to the "first-frame" effect noted in IRAC data. Most of our corrections are additive in nature as multiplicative corrections cause noticeable irregularities over the large dynamic range observed in our survey mosaics. In most cases our approach is to characterize the artifact and determine a correction, although in some cases the artifacts are simply masked from the images. This work is based on observations made with the Spitzer Space Telescope, which is operated by the Jet Propulsion Laboratory, California Institute of Technology under a contract with NASA. Support for this work was provided by NASA through an award issued by JPL/Caltech.

  16. IEEE TRANSACTIONS ON IMAGE PROCESSING -14(1), 2005 1 Conditional Filters for Image Sequence Based

    E-print Network

    Paris-Sud XI, Université de

    variance estimator, particle filtering, optimal importance func- tion, robust motion estimation. The second one is a nonlinear tracker, implemented from a conditional particle filter. It allows trackingIEEE TRANSACTIONS ON IMAGE PROCESSING - 14(1), 2005 1 Conditional Filters for Image Sequence Based

  17. Malcolm Roberts: Teaching Statement Teaching Philosophy

    E-print Network

    Roberts, Malcolm

    Malcolm Roberts: Teaching Statement Teaching Philosophy Teaching is very important to me. While requiring a great deal of energy, it also provides great rewards. From my first experience teaching English engineering students in Canada, much the same process takes place: first know and love your subject

  18. A Behavioral Analysis of the Laboratory Learning Process: Redesigning a Teaching Unit on Recrystallization.

    ERIC Educational Resources Information Center

    Mulder, T.; Verdonk, A. H.

    1984-01-01

    Reports on a project in which observations of student and teaching assistant behavior were used to redesign a teaching unit on recrystallization. Comments on the instruction manual, starting points for teaching the unit, and list of objectives with related tasks are included. (JN)

  19. Digital image processing for radioactive ion microscopy

    E-print Network

    Nash, Reuel William

    1983-01-01

    , the autoradiographs are photographed through a microscope. Ths resulting 35, millimeter slides are placed in an optical bench which includes a light source, the digitizing camera, and associated optics. The video output of the camera is digitized at 256x256... resolution by the Colorado Video Incorporated CVI-274 Real-time frame store under the control of a Digital Equipment Corporation PDP 11/40 mini-computer. Then, the data in the frame buffer is transferred to dish or tape media for processing. After all...

  20. Image processing techniques in 3-D foot shape measurement system

    NASA Astrophysics Data System (ADS)

    Liu, Guozhong; Li, Ping; Wang, Boxiong; Shi, Hui; Luo, Xiuzhi

    2008-10-01

    The 3-D foot-shape measurement system based on laser-line-scanning principle was designed and 3-D foot-shape measurements without blind areas and the automatic extraction of foot-parameters were achieved. The paper is focused on the study of the system structure and principle and image processing techniques. The key techniques related to the image processing for 3-D foot shape measurement system include laser stripe extraction, laser stripe coordinate transformation from CCD cameras image coordinates system to laser plane coordinates system, laser stripe assembly of eight CCD cameras and eliminating of image noise and disturbance. 3-D foot shape measurement makes it possible to realize custom-made shoe-making and shows great prosperity in shoe design, foot orthopaedic treatment, shoe size standardization and establishment of a feet database for consumers.

  1. Dehydration process of fish analyzed by neutron beam imaging

    NASA Astrophysics Data System (ADS)

    Tanoi, K.; Hamada, Y.; Seyama, S.; Saito, T.; Iikura, H.; Nakanishi, T. M.

    2009-06-01

    Since regulation of water content of the dried fish is an important factor for the quality of the fish, water-losing process during drying (squid and Japanese horse mackerel) was analyzed through neutron beam imaging. The neutron image showed that around the shoulder of mackerel, there was a part where water content was liable to maintain high during drying. To analyze water-losing process more in detail, spatial image was produced. From the images, it was clearly indicated that the decrease of water content was regulated around the shoulder part. It was suggested that to prevent deterioration around the shoulder part of the dried fish is an important factor to keep quality of the dried fish in the storage.

  2. Cloud based toolbox for image analysis, processing and reconstruction tasks.

    PubMed

    Bednarz, Tomasz; Wang, Dadong; Arzhaeva, Yulia; Lagerstrom, Ryan; Vallotton, Pascal; Burdett, Neil; Khassapov, Alex; Szul, Piotr; Chen, Shiping; Sun, Changming; Domanski, Luke; Thompson, Darren; Gureyev, Timur; Taylor, John A

    2015-01-01

    This chapter describes a novel way of carrying out image analysis, reconstruction and processing tasks using cloud based service provided on the Australian National eResearch Collaboration Tools and Resources (NeCTAR) infrastructure. The toolbox allows users free access to a wide range of useful blocks of functionalities (imaging functions) that can be connected together in workflows allowing creation of even more complex algorithms that can be re-run on different data sets, shared with others or additionally adjusted. The functions given are in the area of cellular imaging, advanced X-ray image analysis, computed tomography and 3D medical imaging and visualisation. The service is currently available on the website www.cloudimaging.net.au . PMID:25381109

  3. New Zealand involvement in Radio Astronomical VLBI Image Processing

    E-print Network

    Weston, Stuart; Gulyaev, Sergei

    2011-01-01

    With the establishment of the AUT University 12m radio telescope at Warkworth, New Zealand has now become a part of the international Very Long Baseline Interferometry (VLBI) community. A major product of VLBI observations are images in the radio domain of astronomical objects such as Active Galactic Nuclei (AGN). Using large geographical separations between radio antennas, very high angular resolution can be achieved. Detailed images can be created using the technique of VLBI Earth Rotation Aperture Synthesis. We review the current process of VLBI radio imaging. In addition we model VLBI configurations using the Warkworth telescope, AuScope (a new array of three 12m antennas in Australia) and the Australian Square Kilometre Array Pathfinder (ASKAP) array currently under construction in Western Australia, and discuss how the configuration of these arrays affects the quality of images. Recent imaging results that demonstrate the modeled improvements from inclusion of the AUT and first ASKAP telescope in the Au...

  4. Image signal processing in sub-pixel accuracy star trackers

    NASA Astrophysics Data System (ADS)

    Salomon, P. M.; Glavich, T. A.

    1980-01-01

    Recent star tracker developments at JPL which utilize microprocessor-controlled large area imaging CCD arrays have included several novel techniques for maximizing the efficiency with which information can be extracted as well as corrected for electronic and opto/mechanical distortions. Scanning algorithms which maximize the rate of obtaining target information, coupled with autonomous control of CCD and signal chain parameters, result from efficient task allocations between electronic hardware elements and operating software. Trade-offs between optical system and image processing software complexity allow sub-pixel star and image tracking using badly aberrated point spread functions by means of power series correction equations which define ideal image centroids from the aberrated image centroids. Star trackers employing these techniques currently under development at JPL are described.

  5. Eye-Gaze Tracking Research Based on Image Processing

    Microsoft Academic Search

    Tao Liu; Changle Pang

    2008-01-01

    This paper presents an eye-gaze tracking system based on the image processing. All the computations are performed in software and the system just needs a PC camera attached to the user's computer. We first extract the facial regions form the images using the skin-color model and connected-component analysis. Then the eye regions are detected by employing the rules and area

  6. Surface Distresses Detection of Pavement Based on Digital Image Processing

    Microsoft Academic Search

    Aiguo Ouyang; Chagen Luo; Chao Zhou

    2010-01-01

    \\u000a Pavement crack is the main form of early diseases of pavement. The use of digital photography to record pavement images and\\u000a subsequent crack detection and classification has undergone continuous improvements over the past decade. Digital image processing\\u000a has been applied to detect the pavement crack for its advantages of large amount of information and automatic detection. The\\u000a applications of digital

  7. Assessing vehicle detection utilizing video image processing technology

    E-print Network

    Hartmann, Duane E

    1996-01-01

    86 VITA 101 LIST OF FIGURES Page Figure 1. Common Inductive Loop Detector Shapes Figure 2, Video Image Camera's Field-of-View Representation 16 Figure 3. Video Image Processing System's Speed Detection Volume 24 Figure 4. Project Study Area... within the camera's ffeld-of-view. The detector locations in the system can be easily removed or adjusted following initial placement (3). The structural integrity of the roadway pavement is not compromised and traffic disruption, due to loop detector...

  8. Reconfigurable Hybrid CMOS\\/Nanodevice Circuits for Image Processing

    Microsoft Academic Search

    Dmitri B. Strukov; Konstantin K. Likharev

    2007-01-01

    We have analyzed two options of using hybrid CMOS\\/nanodevice circuits with area-distributed (CMOL) interface for the low-level image processing tasks, on the simplest example of 2-D image convolution with a sizable filter window. The first option is to use digital, DSP-like circuits based on a reconfigurable CMOL fabric, while the second one is based on mixed-signal CMOL circuits with the

  9. Crystallographic phase retrieval through image processing under constraints

    NASA Astrophysics Data System (ADS)

    Zhang, Kam Y.

    1993-11-01

    The crystallographic image processing techniques of Sayre's equation, molecular averaging, solvent flattening and histogram matching are combined in an integrated procedure for macromolecular phase retrieval. It employs the constraints of the local shape of electron density, equal molecules, solvent flatness and correct electron density distribution. These constraints on electron density image are satisfied simultaneously by solving a system of non- linear equations using fast Fourier transform. The electron density image is further filtered under the constraint of observed diffraction amplitudes. The effect of each constraint on phase retrieval is examined. The constraints are found to work synergistically in phase retrieval. Test results on 2Zn insulin are presented.

  10. SENTINEL-2 Level 1 Products and Image Processing Performances

    NASA Astrophysics Data System (ADS)

    Baillarin, S. J.; Meygret, A.; Dechoz, C.; Petrucci, B.; Lacherade, S.; Tremas, T.; Isola, C.; Martimort, P.; Spoto, F.

    2012-07-01

    In partnership with the European Commission and in the frame of the Global Monitoring for Environment and Security (GMES) program, the European Space Agency (ESA) is developing the Sentinel-2 optical imaging mission devoted to the operational monitoring of land and coastal areas. The Sentinel-2 mission is based on a satellites constellation deployed in polar sun-synchronous orbit. While ensuring data continuity of former SPOT and LANDSAT multi-spectral missions, Sentinel-2 will also offer wide improvements such as a unique combination of global coverage with a wide field of view (290 km), a high revisit (5 days with two satellites), a high resolution (10 m, 20 m and 60 m) and multi-spectral imagery (13 spectral bands in visible and shortwave infra-red domains). In this context, the Centre National d'Etudes Spatiales (CNES) supports ESA to define the system image products and to prototype the relevant image processing techniques. This paper offers, first, an overview of the Sentinel-2 system and then, introduces the image products delivered by the ground processing: the Level-0 and Level-1A are system products which correspond to respectively raw compressed and uncompressed data (limited to internal calibration purposes), the Level-1B is the first public product: it comprises radiometric corrections (dark signal, pixels response non uniformity, crosstalk, defective pixels, restoration, and binning for 60 m bands); and an enhanced physical geometric model appended to the product but not applied, the Level-1C provides ortho-rectified top of atmosphere reflectance with a sub-pixel multi-spectral and multi-date registration; a cloud and land/water mask is associated to the product. Note that the cloud mask also provides an indication about cirrus. The ground sampling distance of Level-1C product will be 10 m, 20 m or 60 m according to the band. The final Level-1C product is tiled following a pre-defined grid of 100x100 km2, based on UTM/WGS84 reference frame. The stringent image quality requirements are also described, in particular the geo-location accuracy for both absolute (better than 12.5 m) and multi-temporal (better than 0.3 pixels) cases. Then, the prototyped image processing techniques (both radiometric and geometric) will be addressed. The radiometric corrections will be first introduced. They consist mainly in dark signal and detector relative sensitivity correction, crosstalk correction and MTF restoration. Then, a special focus will be done on the geometric corrections. In particular the innovative method of automatic enhancement of the geometric physical model will be detailed. This method takes advantage of a Global Reference Image database, perfectly geo-referenced, to correct the physical geometric model of each image taken. The processing is based on an automatic image matching process which provides accurate ground control points between a given band of the image to refine and a reference image, allowing to dynamically calibrate the viewing model. The generation of the Global Reference Image database made of Sentinel-2 pre-calibrated mono-spectral images will be also addressed. In order to perform independent validation of the prototyping activity, an image simulator dedicated to Sentinel-2 has been set up. Thanks to this, a set of images have been simulated from various source images and combining different acquisition conditions and landscapes (mountains, deserts, cities …). Given disturbances have been also simulated so as to estimate the end to end performance of the processing chain. Finally, the radiometric and geometric performances obtained by the prototype will be presented. In particular, the geo-location performance of the level-1C products which widely fulfils the image quality requirements will be provided.

  11. High Performance Image Processing And Laser Beam Recording System

    NASA Astrophysics Data System (ADS)

    Fanelli, Anthony R.

    1980-09-01

    The article is meant to provide the digital image recording community with an overview of digital image processing, and recording. The Digital Interactive Image Processing System (DIIPS) was assembled by ESL for Air Force Systems Command under ROME AIR DEVELOPMENT CENTER's guidance. The system provides the capability of mensuration and exploitation of digital imagery with both mono and stereo digital images as inputs. This development provided for system design, basic hardware, software and operational procedures to enable the Air Force's System Command photo analyst to perform digital mensuration and exploitation of stereo digital images as inputs. The engineering model was based on state-of-the-art technology and to the extent possible off-the-shelf hardware and software. A LASER RECORDER was also developed for the DIIPS Systems and is known as the Ultra High Resolution Image Recorder (UHRIR). The UHRIR is a prototype model that will enable the Air Force Systems Command to record computer enhanced digital image data on photographic film at high resolution with geometric and radiometric distortion minimized.

  12. Video image processing for nuclear safeguards

    SciTech Connect

    Rodriguez, C.A.; Howell, J.A.; Menlove, H.O.; Brislawn, C.M.; Bradley, J.N. [Los Alamos National Lab., NM (United States); Chare, P.; Gorten, J. [European Atomic Energy Community, Luxembourg (Luxembourg)

    1995-09-01

    The field of nuclear safeguards has received increasing amounts of public attention since the events of the Iraq-UN conflict over Kuwait, the dismantlement of the former Soviet Union, and more recently, the North Korean resistance to nuclear facility inspections by the International Atomic Energy Agency (IAEA). The role of nuclear safeguards in these and other events relating to the world`s nuclear material inventory is to assure safekeeping of these materials and to verify the inventory and use of nuclear materials as reported by states that have signed the nuclear Nonproliferation Treaty throughout the world. Nuclear safeguards are measures prescribed by domestic and international regulatory bodies such as DOE, NRC, IAEA, and EURATOM and implemented by the nuclear facility or the regulatory body. These measures include destructive and non destructive analysis of product materials/process by-products for materials control and accountancy purposes, physical protection for domestic safeguards, and containment and surveillance for international safeguards.

  13. Imaging of inflammatory processes with labeled cells

    SciTech Connect

    Froelich, J.W.; Swanson, D.

    1984-04-01

    Radionuclide techniques for localizing inflammatory processes had relied heavily upon /sup 67/Ga-citrate until McAfee and Thakur described the technique for the radiolabeling of leukocytes with /sup 111/In-oxine. Since their initial description in 1976 there has been continued development of the radiopharmaceutical, as well as clinical efficacy. At present /sup 111/In-labeled leukocytes continue to be handled as an investigational new drug but this has not greatly limited its clinical availability. Indium-/sup 111/ leukocytes are the agent of choice for evaluation of patients with fever of unknown origin, osteomyelitis, and prosthetic graft infections; and preliminary data shows great promise in the area of detecting reoccurrence of inflammatory bowel disease. This article attempts to review currently accepted uses of 111In leukocytes as well as potential areas of application.

  14. Image processing for the laser spot thermography of composite materials

    NASA Astrophysics Data System (ADS)

    Vandone, Ambra; Rizzo, Piervincenzo; Vanali, Marcello

    2012-04-01

    This paper describes an image processing algorithm in support of infrared based nondestructive testing. The algorithm aims at analyzing the raw thermal infrared images obtained by using the nondestructive evaluation method of the laser spot thermography. In the study presented in this paper, a laser was used to scan a test specimen through the generation of single pulses. The temperature distribution produced by this thermoelastic source was measured by an infrared camera and processed with a two-stage algorithm. In the first stage few statistical parameters were used to flag the presence of damage. In the second stage the images that revealed the presence of damage were processed computing the first and second spatial derivative. Two spatial filters were also used to enhance contrast, and to locate and size the defect. The algorithm was experimentally validated by scanning the surface of a CFRP and a GFRP composite plate with induced defects.

  15. Fast image acquisition and processing on a TV camera-based portal imaging system.

    PubMed

    Baier, Kurt; Meyer, Jürgen

    2005-01-01

    The present paper describes the fast acquisition and processing of portal images directly from a TV camera-based portal imaging device (Siemens Beamview Plus). This approach employs not only hard- and software included in the standard package installed by the manufacturer (in particular the frame grabber card and the Matrox Intellicam interpreter software), but also a software tool developed in-house for further processing and analysis of the images. The technical details are presented, including the source code for the Matrox interpreter script that enables the image capturing process. With this method it is possible to obtain raw images directly from the frame grabber card at an acquisition rate of 15 images per second. The original configuration by the manufacturer allows the acquisition of only a few images over the course of a treatment session. The approach has a wide range of applications, such as quality assurance (QA) of the radiation beam, real-time imaging, real-time verification of intensity-modulated radiation therapy (IMRT) fields, and generation of movies of the radiation field (fluoroscopy mode). PMID:16008082

  16. An image processing approach to analyze morphological features of microscopic images of muscle fibers.

    PubMed

    Comin, Cesar Henrique; Xu, Xiaoyin; Wang, Yaming; Costa, Luciano da Fontoura; Yang, Zhong

    2014-12-01

    We present an image processing approach to automatically analyze duo-channel microscopic images of muscular fiber nuclei and cytoplasm. Nuclei and cytoplasm play a critical role in determining the health and functioning of muscular fibers as changes of nuclei and cytoplasm manifest in many diseases such as muscular dystrophy and hypertrophy. Quantitative evaluation of muscle fiber nuclei and cytoplasm thus is of great importance to researchers in musculoskeletal studies. The proposed computational approach consists of steps of image processing to segment and delineate cytoplasm and identify nuclei in two-channel images. Morphological operations like skeletonization is applied to extract the length of cytoplasm for quantification. We tested the approach on real images and found that it can achieve high accuracy, objectivity, and robustness. PMID:25124286

  17. [Who teaches queer: the prospect of queer theory analysis in the health education process].

    PubMed

    Motta, Jose Inácio Jardim; Ribeiro, Victória Maria Brant

    2013-06-01

    The scope of this essay is to reflect on the possibilities of inclusion of a queer analytical body to the processes of education in the health field. This is because the development of the Unified Health System, with its new set of health practices has revealed challenges that include broadening the knowledge set especially required for revitalization of the notion of subject. Queer theory is needed to understand how identities and in particular gender and sexuality are incorporated, in a social and cultural process, and how, in the micro-social spaces, it can determine educational practices with the power to reinforce the status of the so-called minority sexualities. Queer theory framed in so-called post-critical theories of education is analyzed from the categories of power, resistance, transgression in the context of standardization and subjectivity. It is assumed that processes of education in health, grounded in queer teaching, working in terms of difference and not diversity, proposing processes of deconstruction of binaries such as nature/culture, reason/passion, homosexual/heterosexual, working towards shaping more assertive cultural and social subjects. PMID:23752536

  18. Proceedings of SPIE --Volume 5701 Three-Dimensional and Multidimensional Microscopy: Image Acquisition and Processing XII,

    E-print Network

    Beauchemin, Steven S.

    preserves the high resolution. This process of assembling the composite image from a number of images, also vision and image processing. Mosaicing with blending can be defined as producing a single edgeless image by putting together a set of overlapped images [2]. Automating this process is an important issue

  19. hal-00709350,version2-26Jun2012 Symmetric Logarithmic Image Processing Model

    E-print Network

    Paris-Sud XI, Université de

    1 12 hal-00709350,version2-26Jun2012 #12;2 Symmetric Logarithmic Image Processing Model Application for logarithmic image processing, called Symmetric Logarithmic Image Pro- cessing (SLIP), that provides an algebraic framework for the processing of transmitted light images and intensity images. The SLIP model

  20. Journal of Mathematical Imaging and Vision 8, pp. 131159, 1998. Preserving Topology by a Digitization Process

    E-print Network

    Latecki, Longin Jan

    by a Digitization Process Longin Jan Latecki1 Christopher Conrad2 Ari Gross3 Abstract The main task of digital image processing is to recognize properties of real objects based on their digital images. These images, a fundamental question in digital image processing is which features in the digital image correspond, under

  1. Automated processing of zebrafish imaging data: a survey.

    PubMed

    Mikut, Ralf; Dickmeis, Thomas; Driever, Wolfgang; Geurts, Pierre; Hamprecht, Fred A; Kausler, Bernhard X; Ledesma-Carbayo, María J; Marée, Raphaël; Mikula, Karol; Pantazis, Periklis; Ronneberger, Olaf; Santos, Andres; Stotzka, Rainer; Strähle, Uwe; Peyriéras, Nadine

    2013-09-01

    Due to the relative transparency of its embryos and larvae, the zebrafish is an ideal model organism for bioimaging approaches in vertebrates. Novel microscope technologies allow the imaging of developmental processes in unprecedented detail, and they enable the use of complex image-based read-outs for high-throughput/high-content screening. Such applications can easily generate Terabytes of image data, the handling and analysis of which becomes a major bottleneck in extracting the targeted information. Here, we describe the current state of the art in computational image analysis in the zebrafish system. We discuss the challenges encountered when handling high-content image data, especially with regard to data quality, annotation, and storage. We survey methods for preprocessing image data for further analysis, and describe selected examples of automated image analysis, including the tracking of cells during embryogenesis, heartbeat detection, identification of dead embryos, recognition of tissues and anatomical landmarks, and quantification of behavioral patterns of adult fish. We review recent examples for applications using such methods, such as the comprehensive analysis of cell lineages during early development, the generation of a three-dimensional brain atlas of zebrafish larvae, and high-throughput drug screens based on movement patterns. Finally, we identify future challenges for the zebrafish image analysis community, notably those concerning the compatibility of algorithms and data formats for the assembly of modular analysis pipelines. PMID:23758125

  2. ISLE (Image and Signal Processing LISP Environment) reference manual

    SciTech Connect

    Sherwood, R.J.; Searfus, R.M.

    1990-01-01

    ISLE is a rapid prototyping system for performing image and signal processing. It is designed to meet the needs of a person doing development of image and signal processing algorithms in a research environment. The image and signal processing modules in ISLE form a very capable package in themselves. They also provide a rich environment for quickly and easily integrating user-written software modules into the package. ISLE is well suited to applications in which there is a need to develop a processing algorithm in an interactive manner. It is straightforward to develop the algorithms, load it into ISLE, apply the algorithm to an image or signal, display the results, then modify the algorithm and repeat the develop-load-apply-display cycle. ISLE consists of a collection of image and signal processing modules integrated into a cohesive package through a standard command interpreter. ISLE developer elected to concentrate their effort on developing image and signal processing software rather than developing a command interpreter. A COMMON LISP interpreter was selected for the command interpreter because it already has the features desired in a command interpreter, it supports dynamic loading of modules for customization purposes, it supports run-time parameter and argument type checking, it is very well documented, and it is a commercially supported product. This manual is intended to be a reference manual for the ISLE functions The functions are grouped into a number of categories and briefly discussed in the Function Summary chapter. The full descriptions of the functions and all their arguments are given in the Function Descriptions chapter. 6 refs.

  3. Grid Computing Application for Brain Magnetic Resonance Image Processing

    NASA Astrophysics Data System (ADS)

    Valdivia, F.; Crépeault, B.; Duchesne, S.

    2012-02-01

    This work emphasizes the use of grid computing and web technology for automatic post-processing of brain magnetic resonance images (MRI) in the context of neuropsychiatric (Alzheimer's disease) research. Post-acquisition image processing is achieved through the interconnection of several individual processes into pipelines. Each process has input and output data ports, options and execution parameters, and performs single tasks such as: a) extracting individual image attributes (e.g. dimensions, orientation, center of mass), b) performing image transformations (e.g. scaling, rotation, skewing, intensity standardization, linear and non-linear registration), c) performing image statistical analyses, and d) producing the necessary quality control images and/or files for user review. The pipelines are built to perform specific sequences of tasks on the alphanumeric data and MRIs contained in our database. The web application is coded in PHP and allows the creation of scripts to create, store and execute pipelines and their instances either on our local cluster or on high-performance computing platforms. To run an instance on an external cluster, the web application opens a communication tunnel through which it copies the necessary files, submits the execution commands and collects the results. We present result on system tests for the processing of a set of 821 brain MRIs from the Alzheimer's Disease Neuroimaging Initiative study via a nonlinear registration pipeline composed of 10 processes. Our results show successful execution on both local and external clusters, and a 4-fold increase in performance if using the external cluster. However, the latter's performance does not scale linearly as queue waiting times and execution overhead increase with the number of tasks to be executed.

  4. Automatic image processing system for beautifying human faces

    NASA Astrophysics Data System (ADS)

    Ho, Kevin I. C.; Chen, Tung-Shou; Su, Hsing-Yi

    2002-09-01

    In this paper, we propose an automatic image processing system to beautify human faces in frontal-parallel color images. Although most of image processing packages provide functions to beautify color images, a few of them, at least based on our knowledge, are specific for beautifying human faces. By using these functions, the processed face images become unreal. For example, they will remove most of natural edges around some special regions, such as eyes and mouth. Therefore, the proposed system only processes the regions of faces. To make the processed face region smoother, our system treats the regions of eyes/mouth and the rest of face region differently. By using different methods to smooth these two types of regions, we can keep almost all the natural edges around eyes and mouth, but remove wrinkles and spots on the rest of faces. The process of our system is as follows. At beginning, we convert the RGB color space into YCbCr space so as to segment face regions from scene background based on the value range of the skin color proposed by H.A. Rowly, etc. Within the face region, the system uses the chain-code to get the eye region and the mouth region. For the eye and mouth regions, we adjust the image pixels by pixel; the rest of pixels are justified by block base. To evaluate the performance of our system, we compare our system with the tool XCleanSkinFX, which can be found at the Web site http://www.mediachance.com. Our system is outperforming.

  5. A synoptic description of coal basins via image processing

    NASA Technical Reports Server (NTRS)

    Farrell, K. W., Jr.; Wherry, D. B.

    1978-01-01

    An existing image processing system is adapted to describe the geologic attributes of a regional coal basin. This scheme handles a map as if it were a matrix, in contrast to more conventional approaches which represent map information in terms of linked polygons. The utility of the image processing approach is demonstrated by a multiattribute analysis of the Herrin No. 6 coal seam in Illinois. Findings include the location of a resource and estimation of tonnage corresponding to constraints on seam thickness, overburden, and Btu value, which are illustrative of the need for new mining technology.

  6. Instructional image processing on a university mainframe: The Kansas system

    NASA Technical Reports Server (NTRS)

    Williams, T. H. L.; Siebert, J.; Gunn, C.

    1981-01-01

    An interactive digital image processing program package was developed that runs on the University of Kansas central computer, a Honeywell Level 66 multi-processor system. The module form of the package allows easy and rapid upgrades and extensions of the system and is used in remote sensing courses in the Department of Geography, in regional five-day short courses for academics and professionals, and also in remote sensing projects and research. The package comprises three self-contained modules of processing functions: Subimage extraction and rectification; image enhancement, preprocessing and data reduction; and classification. Its use in a typical course setting is described. Availability and costs are considered.

  7. IEEE TRANSACTIONS ON IMAGE PROCESSING, VOL. 18, NO. 6, JUNE 2009 1203 Opti-Acoustic Stereo Imaging: On System Calibration

    E-print Network

    Reif, Rafael

    IEEE TRANSACTIONS ON IMAGE PROCESSING, VOL. 18, NO. 6, JUNE 2009 1203 Opti-Acoustic Stereo Imaging the performance in compar- ison with the processing of images from each sensor, alone. This multisensor fusion shape recovery of underwater targets by opti-acoustic stereo imaging, where the associated epipolar

  8. Dual-band camera system with advanced image processing capability

    NASA Astrophysics Data System (ADS)

    Schreer, Oliver; López Sáenz, Mónica; Peppermueller, Christian; Schmidt, Uwe

    2007-04-01

    A dual-band IR camera system based on a dual-band QWIP focal plane array in 384x288x2 format was developed. The camera delivers exactly pixel-registered simultaneously acquired images and exhibits an excellent NETD of <30 mK at an integration time of less than 10 ms. It is equipped with Camera Link and Gigabit Ethernet data interface and is connected to and operated from a personal computer. The camera is equipped with a special dual-band, dual-field-of-view lens (14.6 degree and 2.8 degree diagonal FOV). Radiometric calibration was performed for real quantitative comparison of MWIR and LWIR radiant power. The system uses special software to extract and visualize the - often quite small - differences of MWIR and LWIR images. The software corrects and processes the images and permits to overlay them with complementary colors such that differences become apparent and can easily be perceived. As a special feature, the system has advanced software for real-time image processing of dynamic scenes. It has an image stabilization feature which compensates for the movement of the camera sensor relative to the scene observed. It also has a powerful image registration capability for automatic stitching of live images to create large mosaic images. The camera system was tested with different scenes and under different weather conditions. It delivers large-format sharp images which reveal a lot of details which would not be perceptible with a single-band IR camera. It permits to identify materials (e.g. glass, asphalt, slate, etc.), to distinguish sun reflections from hot objects and to visualize hot exhaust gases.

  9. IEEE TRANSACTIONS ON IMAGE PROCESSING, VOL. 17, NO. 11, NOVEMBER 2008 2089 Image Modeling and Denoising With

    E-print Network

    Simoncelli, Eero

    develop an optimal Bayesian least squares esti- mator for denoising images and show through simulations scale mixtures. Index Terms--Gaussian Scale Mixtures, image denoising, image processing, statistical image modeling, wavelet transforms. I. INTRODUCTION THE set of natural photographic images is a distinct

  10. 1216 IEEE TRANSACTIONS ON IMAGE PROCESSING, VOL. 9, NO. 7, JULY 2000 Sonar Image Segmentation Using an Unsupervised

    E-print Network

    Mignotte, Max

    1216 IEEE TRANSACTIONS ON IMAGE PROCESSING, VOL. 9, NO. 7, JULY 2000 Sonar Image Segmentation Using to sonar image segmentation.¡ We present an original hierarchical segmentation pr¢ ocedure devoted to images given by a high-resolution sonar. The sonar¡ image is segmented into two kinds of regions: shadow

  11. The Effect Of Pre-Processing On Image Compression

    NASA Astrophysics Data System (ADS)

    Cookson, J.; Thoma, G.

    1986-10-01

    The Lister Hill National Center for Biomedical Communications, the National Library of Medicine's research division, is currently engaged in studying the application of Electronic Document Storage and Retrieval (EDSR) systems to a library environment. To accomplish this, an EDSR prototype has been built and is currently in use as a laboratory test-bed. The system consists of CCD scanners for document digitization, high resolution CRT document displays, hardcopy output devices, and optical and magnetic disk storage devices, all under the control of a PDP-11/44 computer. Prior to storage and transmission, the captured document images undergo processing operations that enhance their quality, eliminate degradations and remove redundancy. It is postulated that a "pre-processing" stage that removes extraneous material from the raw image data could improve the performance of the processing operations. The processing operation selected to prove this hypothesis is image compression, an important feature to economically extend on-line image storage capacity and increase image transfer speed in the EDSR system. The particular technique selected for implementation is one-dimensional runlength coding (CCITT recommendation T.4), because it is an established standard and appropriate as a base line system. The preprocessing operations on the raw image data are border removal and page centering. After centering the images, which are approximately 6 by 9 inches in the examples picked, in an 8.5 by 11 inch field, the "noisy" border areas are then made white. These operations are done electronically in a digital memory under operator control. For a selected set of pages, mostly comprising title pages and tables of contents, the result is an average improvement in compression ratios by a factor of over 3.

  12. Teaching Reading

    ERIC Educational Resources Information Center

    Day, Richard R.

    2013-01-01

    "Teaching Reading" uncovers the interactive processes that happen when people learn to read and translates them into a comprehensive easy-to-follow guide on how to teach reading. Richard Day's revelations on the nature of reading, reading strategies, reading fluency, reading comprehension, and reading objectives make fascinating…

  13. Course Code: CoE4TN4 Course Title: Image Processing

    E-print Network

    Haykin, Simon

    and edges 11. Extract regions of interest from an image and to employ morphological filtering techniques models o Pseudocolor image processing o Color transformation · Morphological image processing o Dilation

  14. Study of optical techniques for the Ames unitary wind tunnel: Digital image processing, part 6

    NASA Technical Reports Server (NTRS)

    Lee, George

    1993-01-01

    A survey of digital image processing techniques and processing systems for aerodynamic images has been conducted. These images covered many types of flows and were generated by many types of flow diagnostics. These include laser vapor screens, infrared cameras, laser holographic interferometry, Schlieren, and luminescent paints. Some general digital image processing systems, imaging networks, optical sensors, and image computing chips were briefly reviewed. Possible digital imaging network systems for the Ames Unitary Wind Tunnel were explored.

  15. Woods Hole Image Processing System Software implementation; using NetCDF as a software interface for image processing

    USGS Publications Warehouse

    Paskevich, Valerie F.

    1992-01-01

    The Branch of Atlantic Marine Geology has been involved in the collection, processing and digital mosaicking of high, medium and low-resolution side-scan sonar data during the past 6 years. In the past, processing and digital mosaicking has been accomplished with a dedicated, shore-based computer system. With the need to process sidescan data in the field with increased power and reduced cost of major workstations, a need to have an image processing package on a UNIX based computer system which could be utilized in the field as well as be more generally available to Branch personnel was identified. This report describes the initial development of that package referred to as the Woods Hole Image Processing System (WHIPS). The software was developed using the Unidata NetCDF software interface to allow data to be more readily portable between different computer operating systems.

  16. IMAGE PROCESSING FOR EVERYONE George C Panayi, Alan C Bovik and Umesh Rajashekar

    E-print Network

    Rajashekar, Umesh

    1 IMAGE PROCESSING FOR EVERYONE George C Panayi, Alan C Bovik and Umesh Rajashekar Laboratory endeavor. Image processing education therefore needs to cater to a wide spectrum of people coming from introduction to image processing. We present novel LabVIEW-based image processing demonstrations that, when

  17. Call for Papers: Special issue on " Image Processing for Digital Art Work Investigation"

    E-print Network

    Abry, Patrice

    Call for Papers: Special issue on " Image Processing for Digital Art Work Investigation" Signal Processing Scope Computer based image processing of digital images of artwork in support of art, crossdisciplinary and involves teams of academic image and signal processing scientists, art scholars

  18. Negotiating a space to teach science: Stories of community conversation and personal process in a school reform effort

    NASA Astrophysics Data System (ADS)

    Barker, Heidi Bulmahn

    This is a qualitative study about elementary teachers in a school district who are involved in a science curricular reform effort. The teachers attempted to move from textbook-based science teaching to a more inquiry and process-based approach. I specifically explore how teachers negotiate their place within changes in pedagogy and curriculum and how this negotiation is enacted in the space of a teacher's own classroom. The account developed here is based on a two-year study. Presented are descriptions, analysis, and my own interpretations of teaching and conversations as teachers spoke with one another, with me and with children as they tried out the new science curriculum and pedagogies. I conclude that people interested in school reform should consider the following ideas as they work with teachers to implement pedagogical and curricular changes. (1) Teaching is a personal/individual process that takes place within a larger community. This leads to a complex context for working and making decisions. (2) Despite feeling that changes were imposed, teachers make the curriculum work for the needs in their own classroom. (3) Change is a process that teachers view as part of their work. Teachers expect that they will adapt curriculum and make it work for the children in their classes and for themselves. I suggest that those who advocate various reform efforts in teaching and curriculum should consider the spaces that teachers create as they become a part of the change process including intellectual, physical, and emotional ones. In my stories I assert: teachers create their own spaces for making changes in pedagogy and curriculum and they do this as a complex negotiation of external demands (such as their community, relationships with colleagues, and state standards) and their own values and interpretations. The ways that teachers implement the change process is a personal one, and because it is a personal process, school reform efforts largely depend on the teachers making these efforts a part of their own thinking, teaching, and learning.

  19. Validating the ACE Model for Evaluating Student Performance Using a Teaching-Learning Process Based on Computational Modeling Systems

    ERIC Educational Resources Information Center

    Louzada, Alexandre Neves; Elia, Marcos da Fonseca; Sampaio, Fábio Ferrentini; Vidal, Andre Luiz Pestana

    2014-01-01

    The aim of this work is to adapt and test, in a Brazilian public school, the ACE model proposed by Borkulo for evaluating student performance as a teaching-learning process based on computational modeling systems. The ACE model is based on different types of reasoning involving three dimensions. In addition to adapting the model and introducing…

  20. The Role of Information and Communication Technologies in Improving Teaching and Learning Processes in Primary and Secondary Schools

    ERIC Educational Resources Information Center

    Sangra, Albert; Gonzalez-Sanmamed, Mercedes

    2010-01-01

    The purpose of this study is to analyse what is happening at schools regarding the integration and use of information and communication technologies (ICT) and to examine teachers' perceptions about what teaching and learning processes can be improved through the use of ICT. A multiple-case-study research methodology was applied. From a previous…