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1

Image Processing for Teaching.  

ERIC Educational Resources Information Center

|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…

Greenberg, R.; And Others

1993-01-01

2

A Study in Lab-based Approach to Teach Image Processing in High School  

Microsoft Academic Search

The objective of this study is to investigate the feasibility of using lecture video and lab package in teaching concepts of image processing to high school students. Teacher taped the lecture video of image processing and put it on the course Website before lecture. In order to reserve more time for interaction and practicing, students watched the lecture video online

Chiung-Fang Chiu; Greg C Lee; Wen-Wei Her

2006-01-01

3

Teaching Effectively with Visual Effect in an Image-Processing Class.  

ERIC Educational Resources Information Center

|Describes a course teaching the use of computers in emulating human visual capability and image processing and proposes an interactive presentation using multimedia technology to capture and sustain student attention. Describes the three phase presentation: introduction of image processing equipment, presentation of lecture material, and…

Ng, G. S.

1997-01-01

4

Image Processing for Teaching: Transforming a Scientific Research Tool into an Educational Technology.  

ERIC Educational Resources Information Center

|Describes the Image Processing for Teaching (IPT) project which provides digital image processing to excite students about science and mathematics as they use research-quality software on microcomputers. Provides information on IPT whose components of this dissemination project have been widespread teacher education, curriculum-based materials…

Greenberg, Richard

1998-01-01

5

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

Microsoft Academic Search

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

L. di; M. Deng

2010-01-01

6

Teaching high school science using image processing: A case study of implementation of computer technology  

NSDL National Science Digital Library

Outlines an in-depth case study of teachers' use of image processing in biology, earth science, and physics classes in one high school science department. Explores issues surrounding technology implementation. Contains 21 references.

Greenberg, Richard; Raphael, Jacqueline; Keller, Jill L.; Tobias, Sheila

2005-10-21

7

Teaching High School Science Using Image Processing: A Case Study of Implementation of Computer Technology.  

ERIC Educational Resources Information Center

|Outlines an in-depth case study of teachers' use of image processing in biology, earth science, and physics classes in one high school science department. Explores issues surrounding technology implementation. Contains 21 references. (DDR)|

Greenberg, Richard; Raphael, Jacqueline; Keller, Jill L.; Tobias, Sheila

1998-01-01

8

SSMiles: Using Models to Teach about Remote Sensing and Image Processing.  

ERIC Educational Resources Information Center

Presents an introductory lesson on remote sensing and image processing to be used in cooperative groups. Students are asked to solve a problem by gathering information, making inferences, transforming data into other forms, and making and testing hypotheses. Includes four expansions of the lesson and a reproducible student worksheet. (MKR)

Tracy, Dyanne M., Ed.

1994-01-01

9

SSMiles: Using Models to Teach about Remote Sensing and Image Processing.  

ERIC Educational Resources Information Center

|Presents an introductory lesson on remote sensing and image processing to be used in cooperative groups. Students are asked to solve a problem by gathering information, making inferences, transforming data into other forms, and making and testing hypotheses. Includes four expansions of the lesson and a reproducible student worksheet. (MKR)|

Tracy, Dyanne M., Ed.

1994-01-01

10

MTES: Visual Programming Environment for Teaching and Research in Image Processing  

Microsoft Academic Search

\\u000a In this paper, we present a visual-programming environment for teaching and research referred to as “MTES”. MTES(Multimedia\\u000a Education System) is the system designed to support both lecture and laboratory experiment simultaneously in one environment.\\u000a It provides tools to prepare on-line teaching materials for the lecture and the experiment. It also provides a suitable teaching\\u000a environment where lecturers can present the

Jeongheon Lee; Youngtak Cho; Hoon Heo; Oksam Chae

2005-01-01

11

Teaching Reflection Seismic Processing  

NASA Astrophysics Data System (ADS)

Without pictures, it is difficult to give students a feeling for wave propagation, transmission, and reflection. Even with pictures, wave propagation is still static to many. However, when students use and modify scripts that generate wavefronts and rays through a geologic model that they have modified themselves, we find that students gain a real feeling for wave propagation. To facilitate teaching 2-D seismic reflection data processing (from acquisition through migration) to our undergraduate and graduate Reflection Seismology students, we use Seismic Un*x (SU) software. SU is maintained and distributed by Colorado School of Mines, and it is freely available (at www.cwp.mines.edu/cwpcodes). Our approach includes use of synthetic and real seismic data, processing scripts, and detailed explanation of the scripts. Our real data were provided by Gregory F. Moore of the University of Hawaii. This approach can be used by any school at virtually no expense for either software or data, and can provide students with a sound introduction to techniques used in processing of reflection seismic data. The same software can be used for other purposes, such as research, with no additional expense. Students who have completed a course using SU are well equipped to begin using it for research, as well. Scripts for each processing step are supplied and explained to the students. Our detailed description of the scripts means students do not have to know anything about SU to start. Experience with the Unix operating system is preferable but not necessary -- our notes include Computer Hints to help the beginner work with the Unix operating system. We include several examples of synthetic model building, acquiring shot gathers through synthetic models, sorting shot gathers to CMP gathers, gain, 1-D frequency filtering, f-k filtering, deconvolution, semblance displays and velocity analysis, flattening data (NMO), stacking the CMPs, and migration. We use two real (marine) data sets. One of these is very easy to process, yet provides an extraordinary example of the importance of migration after stack. The other data set is a challenge to process, due to contamination by multiples. Students who complete the SU exercises learn the structure of reflection seismic data, the fundamentals of seismic data processing, and gain an introduction to signal processing, providing them with the tools required to make appropriate career choices and/or to continue their research.

Forel, D.; Benz, T.; Pennington, W. D.

2004-12-01

12

Teaching: A Reflective Process  

ERIC Educational Resources Information Center

In this article, the authors describe how they used formative assessments to ferret out possible misconceptions among middle-school students in a unit about weather-related concepts. Because they teach fifth- and eighth-grade science, this assessment also gives them a chance to see how student understanding develops over the years. This year they…

German, Susan; O'Day, Elizabeth

2009-01-01

13

Teaching Image-Processing Concepts in Junior High School: Boys' and Girls' Achievements and Attitudes towards Technology  

ERIC Educational Resources Information Center

|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…

Barak, Moshe; Asad, Khaled

2012-01-01

14

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

Microsoft Academic Search

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:

Moshe Barak; Khaled Asad

2012-01-01

15

Linear Algebra and Image Processing  

ERIC Educational Resources Information Center

|We use the computing technology digital image processing (DIP) to enhance the teaching of linear algebra so as to make the course more visual and interesting. Certainly, this visual approach by using technology to link linear algebra to DIP is interesting and unexpected to both students as well as many faculty. (Contains 2 tables and 11 figures.)|

Allali, Mohamed

2010-01-01

16

Learning to Use Geographic Information Systems and Image Processing and Analysis to Teach Ocean Science to Middle School Students  

NASA Astrophysics Data System (ADS)

This presentation will provide a middle school teacher's perspective on Ocean Explorers, a three-year project directed at teachers and schools in California. Funded by the Information Technology Experiences for Students and Teachers (ITEST) program at the National Science Foundation, Ocean Explorers is giving support to teams of teachers that will serve as local user groups for the exploration of geographic information systems (GIS) and image processing and analysis (IPA) as educational technologies for studying ocean science. Conducted as a collaboration between the nonprofit Center for Image Processing in Education and the Channel Islands National Marine Sanctuary, the project is providing mentoring, software, equipment, funding, and training on how to design inquiry-based activities that support achievement of California's standards for science, technology, mathematics, and reading education. During year two of Ocean Explorers, the teams of teachers will begin to use GIS and IPA as tools for involving their students in original research on issues of interest to their home communities. With assistance from the Ocean Explorers project, the teachers will create inquiry-based activities for their students that will help their school achieve targeted standards. This presentation will focus on plans by one teacher for involving students from St. Mary's Middle School, Fullerton, California, in tracking of ocean pollution and beach closures along the Southern California coast.

Moore, S. D.; Martin, J.; Kinzel, M.

2004-12-01

17

Digital Image Processing  

Microsoft Academic Search

This paper describes the basic technological aspects of Digital Image Processing with special reference to satellite image processing. Basically, all satellite image-processing operations can be grouped into three categories: Image Rectification and Restoration, Enhancement and Information Extraction. The former deals with initial processing of raw image data to correct for geometric distortion, to calibrate the data radiometrically and to eliminate

Minakshi Kumar

1981-01-01

18

Digital Breast Imaging Teaching File.  

National Technical Information Service (NTIS)

Because of inefficient utilization of current mammography teaching facilities and existing deficiencies in training resources for radiologists, there is a need to supplement or replace the traditional film-based method of training. The purpose of this res...

E. A. Sickles

1997-01-01

19

Digital Breast Imaging Teaching File.  

National Technical Information Service (NTIS)

Because of inefficient utilization of current mammography teaching facilities and existing deficiencies in training resources for radiologists, there is a need to supplement or replace the traditional film-based method of training. The purpose of this res...

E. A. Sickles

1996-01-01

20

Computers in Public Schools: Changing the Image with Image Processing.  

ERIC Educational Resources Information Center

|The kinds of educational technologies selected can make the difference between uninspired, rote computer use and challenging learning experiences. University of Arizona's Image Processing for Teaching Project has worked with over 1,000 teachers to develop image-processing techniques that provide students with exciting, open-ended opportunities…

Raphael, Jacqueline; Greenberg, Richard

1995-01-01

21

Digital Imaging and Image Processing  

NSDL National Science Digital Library

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.

Leske, Cavin.

2002-01-01

22

Delivering labeled teaching images over the Web.  

PubMed Central

The Web provides educators with the best opportunity to date for distributing teaching images across the educational enterprise and within the clinical environment. Experience in the pre-Web era showed that labels and information linked to parts of the image are crucial to student learning. Standard Web technology does not enable the delivery of labeled images. We have developed an environment called OverLayer that succeeds in the authoring and delivering of such images in a variety of formats. OverLayer has a number of functional specifications, based on the literature and on our experience, among them, the following: Users should be able to find components by name or by image; to receive feedback about their choice to test themselves. The image should be of arbitrary size; should be reusable; should be linked to further information; should be stand-alone files. The labels should not obscure the image; should be linked to further information. Images should be stand-alone files that can be transferred among faculty members. Implemented in Java, OverLayer (http:/(/)omie.med.jhmi.edu/overlayer) has at its heart a set of object classes that have been reused in a number of applets for different teaching purposes and a file format for creating OverLayer images. We have created a 350-image histology library and a 500-image pathology library, and are working on a 400-image GI endoscopy library. We hope that the OverLayer suite of classes and implementations will help to further the gains made by previous image-based hyperlinked technologies. Images Figure 3

Lehmann, H. P.; Nguyen, B.; Freedman, J.

1998-01-01

23

Image Processing Language.  

National Technical Information Service (NTIS)

This thesis introduces a new image processing language (IPL) which is based on the domains and operations required to express common image processing algorithms in a high-level language. IPL is independent of any particular computer architecture. Its impl...

R. C. Hood

1983-01-01

24

Image Processing Research.  

National Technical Information Service (NTIS)

The research program, Image Processing Research, has as its primary purpose the analysis and development of techniques and systems for efficiently generating, processing, transmitting, and displaying visual images and two dimensional data arrays. Research...

W. K. Pratt

1975-01-01

25

Informatics in radiology (infoRAD): multimedia extension of medical imaging resource center teaching files.  

PubMed

A new method has been developed for multimedia enhancement of electronic teaching files created by using the standard protocols and formats offered by the Medical Imaging Resource Center (MIRC) project of the Radiological Society of North America. The typical MIRC electronic teaching file consists of static pages only; with the new method, audio and visual content may be added to the MIRC electronic teaching file so that the entire image interpretation process can be recorded for teaching purposes. With an efficient system for encoding the audiovisual record of on-screen manipulation of radiologic images, the multimedia teaching files generated are small enough to be transmitted via the Internet with acceptable resolution. Students may respond with the addition of new audio and visual content and thereby participate in a discussion about a particular case. MIRC electronic teaching files with multimedia enhancement have the potential to augment the effectiveness of diagnostic radiology teaching. PMID:16284145

Yang, Guo Liang; Aziz, Aamer; Narayanaswami, Banukumar; Anand, Ananthasubramaniam; Lim, C C Tchoyoson; Nowinski, Wieslaw Lucjan

26

Digital image processing  

Microsoft Academic Search

The field of digital image processing is reviewed with reference to its origins, progress, current status, and prospects for the future. Consideration is given to the evolution of image processor display devices, developments in the functional components of an image processor display system (e.g. memory, data bus, and pipeline central processing unit), and developments in the software. The major future

B. R. Hunt

1981-01-01

27

Process-Product Research on Teaching: A Review of Criticisms.  

ERIC Educational Resources Information Center

Reviews the conceptualization, methodology, productivity, interpretation, and application of teaching research which focuses on the relation between classroom processes (teaching) and products (what students learn). (DE)

Gage, N. L.; Needels, Margaret C.

1989-01-01

28

Nursing process, student attributes, and teaching methodologies.  

PubMed

This study investigated the relationship among methodologies used in teaching the nursing process, nursing students' ability to use nursing process, and the following student attributes of: field-related perceptual functioning, impulsiveness, locus of control, convergent-divergent thinking ability, and scholastic aptitude. Data were collected from 201 students at the beginning and at the end of their first clinical nursing course in six institutions. Mean scores on the Group Embedded Figures Test, Different Uses Test, and Inference Test increased significantly. The most-used teaching methodology was teacher-dominated presentation; the least-used, individual conference. Findings regarding methods were based on replies from 77 faculty teaching the clinical course. A significant predictive relationship was found between the ability to use nursing process and inference ability, locus of control, and minimal time spent in small group discussion. PMID:6909734

Kissinger, J F; Munjas, B A

29

Image Processing Software  

NASA Astrophysics Data System (ADS)

ABSTRACT: A brief description of astronomical image software is presented. This software was developed in a Digital Micro Vax II Computer System. : St presenta una somera descripci6n del software para procesamiento de imagenes. Este software fue desarrollado en un equipo Digital Micro Vax II. : DATA ANALYSIS - IMAGE PROCESSING

Bosio, M. A.

1990-11-01

30

Methods in Astronomical Image Processing  

NASA Astrophysics Data System (ADS)

A Brief Introductory Note History of Astronomical Imaging Astronomical Image Data Images in Various Formats Digitized Image Data Digital Image Data Philosophy of Astronomical Image Processing Properties of Digital Astronomical Images Human Image Processing Astronomical vs. Computer Science Image Processing Basic Tools of Astronomical Image Processing Display Applications Calibration of Intensity Scales Calibration of Length Scales Image Re-shaping Feature Enhancement Noise Suppression Noise and Error Analysis Image Processing Packages: Design of AIPS and MIDAS AIPS MIDAS Reduction of CCD Data Bias Subtraction Clipping Preflash Subtraction Dark Subtraction Flat Fielding Sky Subtraction Extinction Correction Deconvolution Methods Rebinning/Combining Summary and Prospects for the Future

Jörsäter, S.

31

A Process Approach to Teaching Thematic Instruction.  

ERIC Educational Resources Information Center

|This paper presents information on using a process approach to teaching thematic instruction in preservice teacher education. Section 1 offers a junior block thematic mini-unit designed to give students intensive practice in a specific content area by designing a thematic topic in the content area and by developing lessons on three or four…

Murray, Ann

32

Teaching Psychological Report Writing: Content and Process  

ERIC Educational Resources Information Center

The purpose of this article is to discuss the process of teaching graduate students in school psychology to write psychological reports that teachers and parents find readable and that guide intervention. The consensus from studies across four decades of research is that effective psychological reports connect to the client's context; have clear…

Wiener, Judith; Costaris, Laurie

2012-01-01

33

Image Processing REST Web Services.  

National Technical Information Service (NTIS)

In this report, we present a readily extensible architecture for image processing based on representational state transfer (REST) Web services. Relying on just two types of resources, images and collections of images, any number of new image processing al...

C. Schlesiger R. P. Winkler

2013-01-01

34

The Image Processing Data Manager.  

National Technical Information Service (NTIS)

The document describes a model of an image processing data management system called the Image Processing Data Manager. The Data Manager is an interactive program which, using a data base, aids the user in performing selective image processing. It answers ...

R. E. Nimensky J. Bebb

1973-01-01

35

Image sets for satellite image processing systems  

NASA Astrophysics Data System (ADS)

The development of novel image processing algorithms requires a diverse and relevant set of training images to ensure the general applicability of such algorithms for their required tasks. Images must be appropriately chosen for the algorithm's intended applications. Image processing algorithms often employ the discrete wavelet transform (DWT) algorithm to provide efficient compression and near-perfect reconstruction of image data. Defense applications often require the transmission of images and video across noisy or low-bandwidth channels. Unfortunately, the DWT algorithm's performance deteriorates in the presence of noise. Evolutionary algorithms are often able to train image filters that outperform DWT filters in noisy environments. Here, we present and evaluate two image sets suitable for the training of such filters for satellite and unmanned aerial vehicle imagery applications. We demonstrate the use of the first image set as a training platform for evolutionary algorithms that optimize discrete wavelet transform (DWT)-based image transform filters for satellite image compression. We evaluate the suitability of each image as a training image during optimization. Each image is ranked according to its suitability as a training image and its difficulty as a test image. The second image set provides a test-bed for holdout validation of trained image filters. These images are used to independently verify that trained filters will provide strong performance on unseen satellite images. Collectively, these image sets are suitable for the development of image processing algorithms for satellite and reconnaissance imagery applications.

Peterson, Michael R.; Horner, Toby; Temple, Asael

2011-05-01

36

Teaching Process Design through Integrated Process Synthesis  

ERIC Educational Resources Information Center

|The design course is an integral part of chemical engineering education. A novel approach to the design course was recently introduced at the University of the Witwatersrand, Johannesburg, South Africa. The course aimed to introduce students to systematic tools and techniques for setting and evaluating performance targets for processes, as well…

Metzger, Matthew J.; Glasser, Benjamin J.; Patel, Bilal; Hildebrandt, Diane; Glasser, David

2012-01-01

37

Image processing and reconstruction  

SciTech Connect

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.

Chartrand, Rick [Los Alamos National Laboratory

2012-06-15

38

Teaching Evolutionary Processes to Skeptical Students  

NASA Astrophysics Data System (ADS)

Astronomy instructors teach about phenomena having very long time scales, and they are often challenged by skeptical students. This is particularly true when teaching a "Life in the Universe" unit or course, which includes some potentially controversial topics concerning biological evolution. Yet, the evidence is overwhelming that evolutionary processes have indeed taken place over long time scales. Whether the topic is the age of the earth, long-term astrophysical phenomena, or biological evolution, instructors should be aware of the supporting evidence. Presentation of the evidence, along with the methods of science that provide high levels of confidence in our current understanding, will help the instructor to respond to students' questions. This information will also allow the instructor to present the scientific content with confidence and not be deterred by special interest groups who, for religious or other reasons, do not want to provide students with the best scientific information that currently exists.

Bobrowsky, M.

2000-12-01

39

Digital Image Processing: Binary Images.  

National Technical Information Service (NTIS)

The basic geometric concepts used to describe the spatial organization of the points on the support of the image are analyzed. The definitions include connectedness, connected components, interior and border, picture representation, structure representati...

J. M. Chassery

1986-01-01

40

Retinomorphic image processing.  

PubMed

The present work is aimed at understanding and explaining some of the aspects of visual signal processing at the retinal level while exploiting the same towards the development of some simple techniques in the domain of digital image processing. Classical studies on retinal physiology revealed the nature of contrast sensitivity of the receptive field of bipolar or ganglion cells, which lie in the outer and inner plexiform layers of the retina. To explain these observations, a difference of Gaussian (DOG) filter was suggested, which was subsequently modified to a Laplacian of Gaussian (LOG) filter for computational ease in handling two-dimensional retinal inputs. Till date almost all image processing algorithms, used in various branches of science and engineering had followed LOG or one of its variants. Recent observations in retinal physiology however, indicate that the retinal ganglion cells receive input from a larger area than the classical receptive fields. We have proposed an isotropic model for the non-classical receptive field of the retinal ganglion cells, corroborated from these recent observations, by introducing higher order derivatives of Gaussian expressed as linear combination of Gaussians only. In digital image processing, this provides a new mechanism of edge detection on one hand and image half-toning on the other. It has also been found that living systems may sometimes prefer to "perceive" the external scenario by adding noise to the received signals in the pre-processing level for arriving at better information on light and shade in the edge map. The proposed model also provides explanation to many brightness-contrast illusions hitherto unexplained not only by the classical isotropic model but also by some other Gestalt and Constructivist models or by non-isotropic multi-scale models. The proposed model is easy to implement both in the analog and digital domain. A scheme for implementation in the analog domain generates a new silicon retina model implemented on a hardware development platform. PMID:18166395

Ghosh, Kuntal; Bhaumik, Kamales; Sarkar, Sandip

2008-01-01

41

Multichannel image storage with image processing capabilities  

NASA Astrophysics Data System (ADS)

We show that by trading light-throughput one can implement an optical technique for multiplexing storage, which allows image-processing operations at the retrieval stage. We illustrate our proposal by performing experimentally image subtraction and spatial differentiation.

Araiza-Esquivel, M.; Guel-Sandoval, S.; Ojeda-Castan~Eda, J.

2004-01-01

42

Image processing technology  

SciTech Connect

This is the final report of a two-year, Laboratory-Directed Research and Development (LDRD) project at the Los Alamos National Laboratory (LANL). The primary objective of this project was to advance image processing and visualization technologies for environmental characterization. This was effected by developing and implementing analyses of remote sensing data from satellite and airborne platforms, and demonstrating their effectiveness in visualization of environmental problems. Many sources of information were integrated as appropriate using geographic information systems.

Van Eeckhout, E.; Pope, P.; Balick, L. [and others

1996-07-01

43

Toward a Student-Centred Process of Teaching Arithmetic  

ERIC Educational Resources Information Center

This article describes a way toward a student-centred process of teaching arithmetic, where the content is harmonized with the students' conceptual levels. At school start, one classroom teacher is guided in recurrent teaching development meetings in order to develop teaching based on the students' prerequisites and to successively learn the…

Eriksson, Gota

2011-01-01

44

Image processing in precision agriculture  

Microsoft Academic Search

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

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

1999-01-01

45

Teaching as a Control-Engineering Process.  

National Technical Information Service (NTIS)

The field of teaching machines is reviewed with particular emphasis on adaptive teaching systems, or systems in which the teaching machine is an adaptive control mechanism. The aim of the review is to indicate the kind of machinery that exists, the kind o...

G. Pask

1964-01-01

46

Peer Observation of Teaching: A Decoupled Process  

ERIC Educational Resources Information Center

|This article details the findings of research into the academic teaching staff experience of peer observation of their teaching practice. Peer observation is commonly used as a tool to enhance a teacher's continuing professional development. Research participants acknowledged its ability to help develop their teaching practice, but they also…

Chamberlain, John Martyn; D'Artrey, Meriel; Rowe, Deborah-Anne

2011-01-01

47

Enhancing the Teaching-Learning Process: A Knowledge Management Approach  

ERIC Educational Resources Information Center

|Purpose: The purpose of this paper is to emphasize the need for knowledge management (KM) in the teaching-learning process in technical educational institutions (TEIs) in India, and to assert the impact of information technology (IT) based KM intervention in the teaching-learning process. Design/methodology/approach: The approach of the paper is…

Bhusry, Mamta; Ranjan, Jayanthi

2012-01-01

48

What Does Teaching Writing as a Process Really Mean?  

Microsoft Academic Search

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

Antonia Chandrasegaran

49

LANGUAGE LEARNING AND THE TEACHING PROCESS.  

ERIC Educational Resources Information Center

|THE TEACHING OF THE NATIVE LANGUAGE CAN BE DIVIDED INTO THREE MAJOR MODES--THE PRESCRIPTIVE, THE DESCRIPTIVE, AND THE PRODUCTIVE. PRESCRIPTIVE TEACHING PROCEEDS FROM TWO (SUSPECT) ASSUMPTIONS--(1) THAT THERE ARE ABSOLUTE STANDARDS UNANIMOUSLY KNOWN AND SHARED BY EDUCATED ADULTS, TO WHICH A STUDENT'S LANGUAGE SHOULD ATTAIN, AND (2) THAT…

EMIG, JANET ANN

50

Humanistic Teaching: A Process for Training Teachers.  

ERIC Educational Resources Information Center

|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,…

London, Robert

51

Transmitting Musical Images: Using Music to Teach Public Speaking  

ERIC Educational Resources Information Center

|Oral communication courses traditionally help students identify the proper arrangement of words to convey particular images. Although instructors emphasize the importance of speaking powerfully, they often struggle to find effective ways to teach their students "how" to deliver a message that resonates with the audience. Given the clear…

Cohen, Steven D.; Wei, Thomas E.

2010-01-01

52

Progress in Image Processing Techniques and Equipment.  

National Technical Information Service (NTIS)

The report describes the current emphasis of image processing research at the laboratory. The following aspects of the work are described: image processing studies, sensor studies, the image processing computer system and image processing equipment. The i...

B. L. McGlamery M. L. Myers R. L. Ensminger R. F. Howarth

1969-01-01

53

Image processing-system  

SciTech Connect

A combination circuit is described for performing feature-identification and histogram functions on the output of an imaging device that produces sequences of digital level signals representing the intensity levels of picture elements in an image and clock signals indicating when a new picture element is represented by the current level signal.

Beg, M.R.; Perl, J.

1986-08-12

54

Work in progress — Medical imaging education by a multi-level module-based online teaching and assessment system  

Microsoft Academic Search

Medical imaging education is a key training component in BME programs. Medical imaging curriculum involves physics principles, mathematical derivations, engineering implementations for teaching image generation, reconstruction and application. We developed an Internet accessible, multi-level module-based interactive system for teaching five commonly used medical imaging modalities. Each imaging modality is delivered by five to six teaching modules (topics). Teaching or learning

Xiping Li; F. Manns; Weizhao Zhao

2010-01-01

55

Factors Causing Demotivation in EFL Teaching Process: A Case Study  

ERIC Educational Resources Information Center

|Studies have mainly focused on strategies to motivate teachers or the student-teacher motivation relationships rather than teacher demotivation in the English as a foreign language (EFL) teaching process, whereas no data have been found on the factors that cause teacher demotivation in the Turkish EFL teaching contexts at the elementary education…

Aydin, Selami

2012-01-01

56

Teaching and learning parallel processing through performance analysis using Prober  

Microsoft Academic Search

In this paper we analyze the teaching and learning of parallel processing through performance analysis using a software tool called Prober. This tool is a functional and performance analyzer of parallel programs that we proposed and developed during an undergraduate research project. Our teaching and learning approach consists of a practical class where students receive explanations about some concepts of

Luiz E. S. Ramos; Luís F. W. Góes; Carlos A. P. S. Martins

2002-01-01

57

[Imaging center - optimization of the imaging process].  

PubMed

Hospitals around the world are under increasing pressure to optimize the economic efficiency of treatment processes. Imaging is responsible for a great part of the success but also of the costs of treatment. In routine work an excessive supply of imaging methods leads to an "as well as" strategy up to the limit of the capacity without critical reflection. Exams that have no predictable influence on the clinical outcome are an unjustified burden for the patient. They are useless and threaten the financial situation and existence of the hospital. In recent years the focus of process optimization was exclusively on the quality and efficiency of performed single examinations. In the future critical discussion of the effectiveness of single exams in relation to the clinical outcome will be more important. Unnecessary exams can be avoided, only if in addition to the optimization of single exams (efficiency) there is an optimization strategy for the total imaging process (efficiency and effectiveness). This requires a new definition of processes (Imaging Pathway), new structures for organization (Imaging Center) and a new kind of thinking on the part of the medical staff. Motivation has to be changed from gratification of performed exams to gratification of process quality (medical quality, service quality, economics), including the avoidance of additional (unnecessary) exams. PMID:23315587

Busch, H-P

2013-01-11

58

Overview of Digital-Image Processing.  

National Technical Information Service (NTIS)

This paper presents an overview of the field of digital-image processing. Particular attention is devoted to the fundamental concepts involved in image processing, including image digitization and typical goals. Some of the most important image processing...

R. E. Twogood R. J. Sherwood

1983-01-01

59

Using Goldenrod Galls to Teach Science Process Skills.  

ERIC Educational Resources Information Center

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)

Peard, Terry L.

1994-01-01

60

Image Processing Diagnostics: Emphysema  

Microsoft Academic Search

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

Alex McKenzie

2009-01-01

61

Teaching with "Voix et Images de France"  

ERIC Educational Resources Information Center

|A report on the classroom use of Voix et Images de France," the French text prepared by the Centre de Recherche et d'Etude pourla Diffusion du Francais (CREDIF) at the Ecole Normale Superieure de Saint-Cloud in France. (FB)|

Marrow, G. D.

1970-01-01

62

CALCULATING IMAGES: AN EXPERIMENT IN TEACHING PRECALCULUS  

Microsoft Academic Search

The purpose of this experiment was to design a precalculus topic that would help prepare students for limits in differential calculus. We wanted the topic to enhance the interpretation of graphs and to be applicable in both technology based and traditional precalculus courses. Calculating images of intervals under continuous functions links precalculus with limits and helps students to transition from

Robert L. Craighead Jr; Cynthia Fleck

1997-01-01

63

Teaching electron diffraction and imaging of macromolecules  

Microsoft Academic Search

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

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

1993-01-01

64

Teaching with "Voix et Images de France"  

ERIC Educational Resources Information Center

A report on the classroom use of Voix et Images de France," the French text prepared by the Centre de Recherche et d'Etude pourla Diffusion du Francais (CREDIF) at the Ecole Normale Superieure de Saint-Cloud in France. (FB)

Marrow, G. D.

1970-01-01

65

Teaching the Inquiry Process to 21st Century Learners  

ERIC Educational Resources Information Center

|Unlike the static, set-in-stone research project, the inquiry process is an interactive cycle used to teach research in any content area. The inquiry process engages students in a way that promotes critical thinking, higher-level processing, and the use of more varied and appropriate resources. This article introduces the inquiry process and…

Carnesi, Sabrina; DiGiorgio, Karen

2009-01-01

66

Images on the Web for Astronomy Teaching: Image Repositories  

NASA Astrophysics Data System (ADS)

This guide lists and reviews 61 Web sites with catalogs of astronomical images that are useful for both formal and informal education. Some are general sites (including images covering many topics), whereas others are particular to one topic or one instrument. We briefly discuss getting started in using images, and copyright and fair use issues.

Fraknoi, Andrew

67

Image Processing: Some Challenging Problems  

NASA Astrophysics Data System (ADS)

Image processing can be broadly defined as the manipulation of signals which are inherently multidimensional. The most common such signals are photographs and video sequences. The goals of processing or manipulation can be (i) compression for storage or transmission; (ii) enhancement or restoration; (iii) analysis, recognition, and understanding; or (iv) visualization for human observers. The use of image processing techniques has become almost ubiquitous; they find applications in such diverse areas as astronomy, archaeology, medicine, video communication, and electronic games. Nonetheless, many important problems in image processing remain unsolved. It is the goal of this paper to discuss some of these challenging problems. In Section I, we mention a number of outstanding problems. Then, in the remainder of this paper, we concentrate on one of them: very-low-bit-rate video compression. This is chosen because it involves almost all aspects of image processing.

Huang, T. S.; Aizawa, K.

1993-11-01

68

Using Classic and Contemporary Visual Images in Clinical Teaching.  

ERIC Educational Resources Information Center

|The patient's body is an image that medical students and residents use to process information. The classic use of images using the patient is qualitative and personal. The contemporary use of images is quantitative and impersonal. The contemporary use of imaging includes radiographic, nuclear, scintigraphic, and nuclear magnetic resonance…

Edwards, Janine C.

1990-01-01

69

Law and Pop Culture: Teaching and Learning about Law Using Images from Popular Culture.  

ERIC Educational Resources Information Center

Believes that using popular culture images of law, lawyers, and the legal system is an effective way for teaching about real law. Offers examples of incorporating popular culture images when teaching about law. Includes suggestions for teaching activities, a mock trial based on Dr. Seuss's book "Yertle the Turtle," and additional resources. (CMK)

Joseph, Paul R.

2000-01-01

70

Acoustic image-processing software  

NASA Astrophysics Data System (ADS)

Several algorithims that display, enhance and analyze side-scan sonar images of the seafloor, have been developed by the University of Washington, Seattle, as part of an Office of Naval Research funded program in acoustic image analysis. One of these programs, PORTAL, is a small (less than 100K) image display and enhancement program that can run on MS-DOS computers with VGA boards. This program is now available in the public domain for general use in acoustic image processing.PORTAL is designed to display side-scan sonar data that is stored in most standard formats, including SeaMARC I, II, 150 and GLORIA data. (See image.) In addition to the “standard” formats, PORTAL has a module “front end” that allows the user to modify the program to accept other image formats. In addition to side-scan sonar data, the program can also display digital optical images from scanners and “framegrabbers,” gridded bathymetry data from Sea Beam and other sources, and potential field (magnetics/gravity) data. While limited in image analysis capability, the program allows image enhancement by histogram manipulation, and basic filtering operations, including multistage filtering. PORTAL can print reasonably high-quality images on Postscript laser printers and lower-quality images on non-Postscript printers with HP Laserjet emulation. Images suitable only for index sheets are also possible on dot matrix printers.

71

Teaching Tools: Physics Downloads, Movies, and Images  

NSDL National Science Digital Library

The University of California Berkeley Physics Lecture Demonstrations Web site contains a page entitled Things of Interest: Downloads, Movies, and Images. The highlight of the site is the downloadable movies of physics experiments that should be very helpful for time and/or money constrained educators. The ten experiments include movies of a chladni disk, Jacob's ladder, dippy bird, a person rotating in a chair while holding dumbbells, a person in a chair with a rotating bicycle wheel, gyroscopic precession, a superconductor, a levitator, jumping rings, and a Tesla coil.

2002-01-01

72

Teaching quality in higher education: An introductory review on a process-oriented teaching-quality model  

Microsoft Academic Search

For improving the quality of teaching in higher education, besides the organisational focus or the result-oriented and momentary evaluations, attention can be paid to teachers and their ‘teaching processes’. With this in mind, the information systems quality (ISQ) laboratory developed a process-oriented model that offered teachers a systematic and incremental way for superior teaching excellence. The model, which is termed

Chung-Yang Chen; Pei-Chi Chen; Pei-Ying Chen

2012-01-01

73

[Technique and application of cell image processing].  

PubMed

Digital image processing is widely used in medical image. Segmentation is one of the important step in computer image processing. The essay introduces the procedure and effect of cell image segmentation by watershed algorithm. PMID:23461119

Qian, Mingli; Huang, Xin

2012-11-01

74

Sgraffito simulation through image processing  

NASA Astrophysics Data System (ADS)

This paper presents a tool for simulating the traditional Sgraffito technique through digital image processing. The tool is based on a digital image pile and a set of attributes recovered from the image at the bottom of the pile using the Streit and Buchanan multiresolution image pyramid. This technique tries to preserve the principles of artistic composition by means of the attributes of color, luminance and shape recovered from the foundation image. A couple of simulated scratching objects will establish how the recovered attributes have to be painted. Different attributes can be painted by using different scratching primitives. The resulting image will be a colorimetric composition reached from the image on the top of the pile, the color of the images revealed by scratching and the inner characteristics of each scratching primitive. The technique combines elements of image processing, art and computer graphics allowing users to make their own free compositions and providing a means for the development of visual communication skills within the user-observer relationship. The technique enables the application of the given concepts in non artistic fields with specific subject tools.

Guerrero, Roberto A.; Serón Arbeloa, Francisco J.

2011-10-01

75

Image Processing in Cardiovascular Radiology  

PubMed Central

In the past ten years digital image processing has contributed decisively to the advance of cardiovascular radiology. Not only images of better diagnostic value could be produced, but also in many cases the risk for the patient was diminished. From the variety of published methods three topics are discussed: One of the principal methods is digital angiography especially with functional imaging. In addition, because of the rapid progress of digital imaging data compression became a major issue. Finally there is a good chance that 3D-processing of MRI data will at least partly replace the present invasive techniques. ImagesFig. 1Fig. 2Fig. 3Fig. 4Fig. 5Fig. 7Fig. 8Fig. 9Fig. 10Fig. 11Fig. 13Fig. 14

Hoehne, K.H.; Bomans, M.; Riemer, M.; Witte, G.

1986-01-01

76

UCLA: Image Processing Research Group  

NSDL National Science Digital Library

The University of California at Los Angeles' Image Processing Research Group (or IMAGERS) focuses on mathematical modeling and computational techniques for image processing, with a particular emphasis on using Partial Differential Equations. The group is part of the UCLA Mathematics Department and the Institute of Pure and Applied Mathematics, but also collaborates with other departments on campus. The research areas described on their website include: Image Reconstruction, Inpainting, Computation, Segmentation & Active Contours, Level Set, Wavelets and Compression, Tomography, and Vision Modeling. They provide overviews of each research area along with links to full reports offering more in depth explanations. Recent papers by IMAGERS' researchers are posted online and available to download free of charge.

77

Teaching due process: A workable method of teaching the ethical and legal aspects  

Microsoft Academic Search

Due process is one of the “great ideas” of the Western world. An enormous amount of literature explains the concept of due process and its history; yet little exists to explain how to teach the legal and ethical aspects. This article suggests a structure, along with some techniques and anecdotes, for an introductory lecture that outlines the contours of due

Dean J. Spader

1994-01-01

78

Image processing technology for nuclear facilities.  

National Technical Information Service (NTIS)

Digital image processing technique is being actively studied since microprocessors and semiconductor memory devices have been developed in 1960's. Now image processing board for personal computer as well as image processing system for workstation is devel...

J. M. Lee Y. B. Lee W. K. Kim S. Y. Park

1993-01-01

79

Associative architecture for image processing  

NASA Astrophysics Data System (ADS)

This article presents a new generation in parallel processing architecture for real-time image processing. The approach is implemented in a real time image processor chip, called the XiumTM-2, based on combining a fully associative array which provides the parallel engine with a serial RISC core on the same die. The architecture is fully programmable and can be programmed to implement a wide range of color image processing, computer vision and media processing functions in real time. The associative part of the chip is based on patented pending methodology of Associative Computing Ltd. (ACL), which condenses 2048 associative processors, each of 128 'intelligent' bits. Each bit can be a processing bit or a memory bit. At only 33 MHz and 0.6 micron manufacturing technology process, the chip has a computational power of 3 billion ALU operations per second and 66 billion string search operations per second. The fully programmable nature of the XiumTM-2 chip enables developers to use ACL tools to write their own proprietary algorithms combined with existing image processing and analysis functions from ACL's extended set of libraries.

Adar, Rutie; Akerib, Avidan

1997-09-01

80

Polar Caps: Image Processing Tutorial  

NSDL National Science Digital Library

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.

Tuthill, George; Obbink, Kim

81

A Process Education Approach To Teaching Computer Science.  

ERIC Educational Resources Information Center

The driving force of process education is its focus on students'"learning to learn." This paper describes an approach to teaching computer science which includes classroom management; the adaptation of four different courses to follow the process education approach; successes achieved; and students' responses. The courses are conducted in closed…

Smith, Peter D.

82

Online Radiology Teaching Files and Medical Image Atlas and Database  

NSDL National Science Digital Library

Radiologists, students of radiology, and those who are interested in medical images in general will be delighted to hear about this website. Created by MedPix, the teaching files and medical images offered here can be browsed by organ system, and after selecting a particular system, visitors can learn about more about each slide in great detail. Another feature of the site allows visitors to offer their own diagnosis before learning the particulars of each discrete medical case. Visitors can also consider the "Case of the Week" area, which features a case that has been selected by the peer review board that vets all of the images that find their way into their archive. Additionally, the site also features an advanced search engine for those users who know exactly what they want.

83

Research on Case Teaching Method of Photoshop Course  

Microsoft Academic Search

Considering of the application fields of Photoshop and vocational education ideas, the teaching contents of Photoshop course have been done by cases based on the teaching characteristics of Computer Image Processing course at graphic design module. This paper has given the teaching flowchart of Photoshop image processing case teaching. According to the teachers and the students, the case teaching is

Xie Nan; Sun Xinxin; Zhang Haibo; Zhu Yijia

2010-01-01

84

FITS Liberator: Image processing software  

NASA Astrophysics Data System (ADS)

The ESA/ESO/NASA FITS Liberator makes it possible to process and edit astronomical science data in the FITS format to produce stunning images of the universe. Formerly a plugin for Adobe Photoshop, the current version of FITS Liberator is a stand-alone application and no longer requires Photoshop. This image processing software makes it possible to create color images using raw observations from a range of telescopes; the FITS Liberator continues to support the FITS and PDS formats, preferred by astronomers and planetary scientists respectively, which enables data to be processed from a wide range of telescopes and planetary probes, including ESO's Very Large Telescope, the NASA/ESA Hubble Space Telescope, NASA's Spitzer Space Telescope, ESA's XMM-Newton Telescope and Cassini-Huygens or Mars Reconnaissance Orbiter.

Lindberg Christensen, Lars; Holm Nielsen, Lars; Nielsen, Kaspar K.; Johansen, Teis; Hurt, Robert; de Martin, David

2012-06-01

85

Image Processing: A State-of-the-Art Way to Learn Science.  

ERIC Educational Resources Information Center

|Teachers participating in the Image Processing for Teaching Process, begun at the University of Arizona's Lunar and Planetary Laboratory in 1989, find this technology ideal for encouraging student discovery, promoting constructivist science or math experiences, and adapting in classrooms. Because image processing is not a computerized text, it…

Raphael, Jacqueline; Greenberg, Richard

1995-01-01

86

Fingerprint recognition using image processing  

NASA Astrophysics Data System (ADS)

Finger Print Recognition is concerned with the difficult task of matching the images of finger print of a person with the finger print present in the database efficiently. Finger print Recognition is used in forensic science which helps in finding the criminals and also used in authentication of a particular person. Since, Finger print is the only thing which is unique among the people and changes from person to person. The present paper describes finger print recognition methods using various edge detection techniques and also how to detect correct finger print using a camera images. The present paper describes the method that does not require a special device but a simple camera can be used for its processes. Hence, the describe technique can also be using in a simple camera mobile phone. The various factors affecting the process will be poor illumination, noise disturbance, viewpoint-dependence, Climate factors, and Imaging conditions. The described factor has to be considered so we have to perform various image enhancement techniques so as to increase the quality and remove noise disturbance of image. The present paper describe the technique of using contour tracking on the finger print image then using edge detection on the contour and after that matching the edges inside the contour.

Dholay, Surekha; Mishra, Akassh A.

2011-04-01

87

Videos and images from 25 years of teaching compressible flow  

NASA Astrophysics Data System (ADS)

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.

Settles, Gary

2008-11-01

88

Medical Image Resource Center--making electronic teaching files from PACS.  

PubMed

A picture archive and communications system (PACS) is a rich source of images and data suitable for creating electronic teaching files (ETF). However, the potential for PACS to support nonclinical applications has not been fully realized: at present there is no mechanism for PACS to identify and store teaching files; neither is there a standardized method for sharing such teaching images. The Medical Image Resource Center (MIRC) is a new central image repository that defines standards for data exchange among different centers. We developed an ETF server that retrieves digital imaging and communication in medicine (DICOM) images from PACS, and enables users to create teaching files that conform to the new MIRC schema. We test-populated our ETF server with illustrative images from the clinical case load of the National Neuroscience Institute, Singapore. Together, PACS and MIRC have the potential to benefit radiology teaching and research. PMID:14747933

Lim, C C Tchoyoson; Yang, Guo Liang; Nowinski, Wieslaw L; Hui, Francis

2004-01-30

89

Teaching the Dance Class: Strategies to Enhance Skill Acquisition, Mastery and Positive Self-Image  

ERIC Educational Resources Information Center

Effective teaching of dance skills is informed by a variety of theoretical frameworks and individual teaching and learning styles. The purpose of this paper is to present practical teaching strategies that enhance the mastery of skills and promote self-esteem, self-efficacy, and positive self-image. The predominant thinking and primary research…

Mainwaring, Lynda M.; Krasnow, Donna H.

2010-01-01

90

Vehicle positioning using image processing  

Microsoft Academic Search

An image-processing approach is described that detects the position of a vehicle on a bridge. A load-bearing vehicle must be carefully positioned on a bridge for quantitative bridge monitoring. The personnel required for setup and testing and the time required for bridge closure or traffic control are important management and cost considerations. Consequently, bridge monitoring and inspections are good candidates

Amardeep Kaur; Steve E. Watkins; Theresa M. Swift

2009-01-01

91

Concept Learning through Image Processing.  

ERIC Educational Resources Information Center

|This study explored computer-based image processing as a study strategy for middle school students' science concept learning. Specifically, the research examined the effects of computer graphics generation on science concept learning and the impact of using computer graphics to show interrelationships among concepts during study time. The 87…

Cifuentes, Lauren; Yi-Chuan, Jane Hsieh

92

Displaying radiologic images on personal computers: image processing and analysis.  

PubMed

This is the fourth article of our series for radiologists and imaging scientists on displaying, manipulating, and analyzing radiologic images on personal computers. Classic image processing is divided into point, area, frame, and geometric processes. Point processes change image pixel values based on the value of the pixel of interest. Histogram equalization adjusts the pixel values in the image based on the distribution of pixel values. Area processes change the pixel of interest based on the values of the surrounding pixels, known as the neighborhood. Area processes using a convolution kernel are often used as image filters. Common convolution kernels include low-frequency, high-frequency, and edge-enhancement filters. Edge enhancement can be performed with convolution kernels such as shift and difference, gradient-directional and Laplacian filters, or with nonlinear methods such as Sobel's algorithm. Frame processes mathematically combine two or more images, often for noise reduction and background subtraction. Geometric processes alter the location of pixels within the image, but usually not the pixel values. Common radiologic applications of image processing include window width and window level adjustments (point process), adaptive histogram equalization (area process), unsharp masking (area process), computed radiography image processing (combined area and point processes), digital subtraction angiography (frame and geometric processes), region of interest analysis (area process), and image rotation (geometric process). As digital imaging becomes more widespread, radiologists need to understand the image processing that is fundamental to these modalities. PMID:8075184

Gillespy, T; Rowberg, A H

1994-05-01

93

Image processing applications in NDE  

SciTech Connect

Nondestructive examination (NDE) can be defined as a technique or collection of techniques that permits one to determine some property of a material or object without damaging the object. There are a large number of such techniques and most of them use visual imaging in one form or another. They vary from holographic interferometry where displacements under stress are measured to the visual inspection of an objects surface to detect cracks after penetrant has been applied. The use of image processing techniques on the images produced by NDE is relatively new and can be divided into three general categories: classical image enhancement; mensuration techniques; and quantitative sensitometry. An example is discussed of how image processing techniques are used to nondestructively and destructively test the product throughout its life cycle. The product that will be followed is the microballoon target used in the laser fusion program. The laser target is a small (50 to 100 ..mu..m - dia) glass sphere with typical wall thickness of 0.5 to 6 ..mu..m. The sphere may be used as is or may be given a number of coatings of any number of materials. The beads are mass produced by the millions and the first nondestructive test is to separate the obviously bad beads (broken or incomplete) from the good ones. After this has been done, the good beads must be inspected for spherocity and wall thickness uniformity. The microradiography of the glass, uncoated bead is performed on a specially designed low-energy x-ray machine. The beads are mounted in a special jig and placed on a Kodak high resolution plate in a vacuum chamber that contains the x-ray source. The x-ray image is made with an energy less that 2 keV and the resulting images are then inspected at a magnification of 500 to 1000X. Some typical results are presented.

Morris, R.A.

1980-01-01

94

Teaching about Dynamic Processes A Teachable Agents Approach  

Microsoft Academic Search

This paper discusses the extensions that we have made to Betty's Brain teachable agent system to help students learn about dynamic processes in a river ecosystem. Students first learn about dynamic behavior in a simulation envi- ronment, and then teach Betty by introducing cycles into the concept map repre- sentation. Betty's qualitative reasoning mechanisms have been extended so that she

Ruchi Gupta; Yanna Wu; Gautam Biswas

2005-01-01

95

A Process-Oriented Framework for Acquiring Online Teaching Competencies  

ERIC Educational Resources Information Center

|As a multidimensional construct which requires multiple competencies, online teaching is forcing universities to rethink traditional faculty roles and competencies. With this consideration in mind, this paper presents a process-oriented framework structured around three sequential non-linear phases: (1) "before": preparing, planning, and…

Abdous, M'hammed

2011-01-01

96

Developing Evaluative Tool for Online Learning and Teaching Process  

ERIC Educational Resources Information Center

The research study aims to underline the development of a new scale on online learning and teaching process based on factor analysis. Further to this, the research study resulted in acceptable scale which embraces social interaction role, interaction behaviour, barriers, capacity for interaction, group interaction as sub-categories to evaluate…

Aksal, Fahriye A.

2011-01-01

97

Researching Teaching and Learning: Roles, Identities and Interview Processes  

ERIC Educational Resources Information Center

|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…

Conteh, Jean; Toyoshima, Saeko

2005-01-01

98

The Teaching of L2 Pronunciation through Processing Instruction  

ERIC Educational Resources Information Center

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…

Gonzales-Bueno, Manuela; Quintana-Lara, Marcela

2011-01-01

99

RDI Advising Model for Improving the Teaching-Learning Process  

ERIC Educational Resources Information Center

|Introduction: Advising in Educational Psychology from the perspective of RDI takes on a stronger investigative, innovative nature. The model proposed by De la Fuente et al (2006, 2007) and Education & Psychology (2007) was applied to the field of improving teaching-learning processes at a school. Hypotheses were as follows: (1) interdependence…

de la Fuente, Jesus; Lopez-Medialdea, Ana Maria

2007-01-01

100

Direct Influence of English Teachers in the Teaching Learning Process  

ERIC Educational Resources Information Center

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…

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

2008-01-01

101

Teaching Information Systems Development via Process Variants  

ERIC Educational Resources Information Center

|Acquiring the knowledge to assemble an integrated Information System (IS) development process that is tailored to the specific needs of a project has become increasingly important. It is therefore necessary for educators to impart to students this crucial skill. However, Situational Method Engineering (SME) is an inherently complex process that…

Tan, Wee-Kek; Tan, Chuan-Hoo

2010-01-01

102

Teaching Information Systems Development via Process Variants  

ERIC Educational Resources Information Center

Acquiring the knowledge to assemble an integrated Information System (IS) development process that is tailored to the specific needs of a project has become increasingly important. It is therefore necessary for educators to impart to students this crucial skill. However, Situational Method Engineering (SME) is an inherently complex process that…

Tan, Wee-Kek; Tan, Chuan-Hoo

2010-01-01

103

Digital Image Processing: A 1996 Review  

Microsoft Academic Search

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.

Jens Damgaard Andersen

1996-01-01

104

Optical processing for 3D digital imaging  

Microsoft Academic Search

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

D. J. Brady

2000-01-01

105

Multidisciplinary Collaboration and the Development of Multimedia Resources: The Images for Teaching Education Project  

Microsoft Academic Search

The University of Exeter heads the Images for Teaching Education Project which has developed multimedia products under Phase 2 of the Teaching and Learning Technology Programme. An aim of the project was to investigate the educational potential of a range of image?based multimedia formats. Products include videodiscs, videotapes, Photo CDs, and Photo CD portfolios with computer? and paper?based support materials;

Patrick Dillon; Jon Coupland; Tony Edwards; Alison Hudson; Penni Tearle

1998-01-01

106

Characteristics of Mindless Teaching Evaluations and the Moderating Effects of Image Compatibility.  

ERIC Educational Resources Information Center

|At 3 times, 164 management students completed student evaluations of teaching (SET), 150 completed an image compatibility questionnaire, and 155 evaluated instructors' overall performance. SET scores and overall evaluations were significantly correlated only when actual and ideal images of instructors were incompatible. When teaching was…

Dunegan, Kenneth J.; Hrivnak, Mary W.

2003-01-01

107

Evaluation of Pre-Service Teachers' Images of Science Teaching in Turkey  

ERIC Educational Resources Information Center

The purpose of this study is to investigate elementary pre-service teachers' image of science teaching, analyze the gender differences in image of science teaching, and evaluate restructured 2004 education reform by using a Draw-A-Science-Teacher-Test Checklist (DASTT-C). Two hundred thirteen (213) pre-service elementary teachers from three…

Yilmaz, Hulya; Turkmen, Hakan; Pedersen, Jon E.; Huyuguzel Cavas, Pinar

2007-01-01

108

Using Interactive Digital Images of Products to Teach Pharmaceutics  

PubMed Central

Objective To implement interactive digital images of drug products and online quizzes in a pharmaceutics course to teach students where to look on product labels for information and how to evaluate ingredients of various dosage forms, and to reinforce pharmaceutical calculations with practical problems. Design Interactive digital images of drug products and a database of quiz questions pertaining to the products were created and an interactive online platform was designed. The interactive digital images were incorporated in pharmaceutics lectures as examples of dosage forms studied and calculations taught. The online quizzes were administered to first-professional year pharmacy students in fall 2004 and fall 2005. Assessment The competency outcome data illustrates that the product-based online quizzes aided students in meeting the desired learning objectives. Modifications to increase ease of use resulted in higher student success rates in the second year of implementation. Student and faculty evaluations of the application were largely positive. Conclusion The development of interactive digital images and product-based online quizzes successfully adapted a traditional learning aid into a viable electronic resource for pharmacy education.

Pham, Khang H.; Dollar,, Michael

2007-01-01

109

Issues in process assessment in science teaching  

Microsoft Academic Search

The current debate on paradigm shift in pedagogy favours the constructivist approach. The Constructivist approach is based on the cognitive learning theory, in which learners construct knowledge through experience. The experiences from hands-on and minds-on activities make the abstraction of knowledge a procession in a continuum of known to unknown. The use of concrete materials in hands-on activities to create

Moses Orwe Onyango

1999-01-01

110

Review of image processing fundamentals  

NASA Astrophysics Data System (ADS)

Image processing through convolution, transform coding, spatial frequency alterations, sampling, and interpolation are considered. It is postulated that convolution in one domain (real or frequency) is equivalent to multiplication in the other (frequency or real), and that the relative amplitudes of the Fourier components must be retained to reproduce any waveshape. It is suggested that all digital systems may be considered equivalent, with a frequency content approximately at the Nyquist limit, and with a Gaussian frequency response. An optimized cubic version of the interpolation continuum image is derived as a set of cubic spines. Pixel replication has been employed to enlarge the visable area of digital samples, however, suitable elimination of the extraneous high frequencies involved in the visable edges, by defocusing, is necessary to allow the underlying object represented by the data values to be seen.

Billingsley, F. C.

1985-01-01

111

Multicomputer processing for medical imaging  

NASA Astrophysics Data System (ADS)

Medical imaging applications have growing processing requirements, and scalable multicomputers are needed to support these applications. Scalability -- performance speedup equal to the increased number of processors -- is necessary for a cost-effective multicomputer. We performed tests of performance and scalability on one through 16 processors on a RACE multicomputer using Parallel Application system (PAS) software. Data transfer and synchronization mechanisms introduced a minimum of overhead to the multicomputer's performance. We implemented magnetic resonance (MR) image reconstruction and multiplanar reformatting (MPR) algorithms, and demonstrated high scalability; the 16- processor configuration was 80% to 90% efficient, and the smaller configurations had higher efficiencies. Our experience is that PAS is a robust and high-productivity tool for developing scalable multicomputer applications.

Goddard, J. Iain; Greene, Jonathon; Bouzas, Brian

1995-04-01

112

RNS Application for Digital Image Processing  

Microsoft Academic Search

In this paper, we carry out a study on the RNS (residue number system) application in digital image processing and propose a RNS image coding scheme that offers high-speed and low-power VLSI implementation for secure image processing. The proposed scheme is more efficient than the RNS image coding scheme of Ammar et al. (2001) in that the proposed method encrypts

Wei Wang; M. N. S. Swamy; M. Omair Ahmad

2004-01-01

113

Processing of medical images using Maple  

NASA Astrophysics Data System (ADS)

Maple's Image Tools package was used to process medical images. The results showed clearer images and records of its intensities and entropy. The medical images of a rhinocerebral mucormycosis patient, who was not early diagnosed, were processed and analyzed using Maple's tools, which showed, in a clearer way, the affected parts in the perinasal cavities.

Toro Betancur, V.

2013-05-01

114

Pre-Processing of Image Data.  

National Technical Information Service (NTIS)

Two kinds or pre-processed image data are routinely produced. The earth disc image and the polar-stereographic image are provided in order to shorten the access time on the Image Display Unit. These data are treated as a Image Data Set of the Relational D...

S. Miyatake T. Ohshima

1989-01-01

115

New Programming Metaphor for Image Processing Procedures.  

National Technical Information Service (NTIS)

Most image processing systems, besides an Application Program Interface (API) which lets users write their own image processing programs, also feature a higher level of programmability. Traditionally, this is a command or macro language, which can be used...

O. M. Smirnov N. E. Piskunov

1992-01-01

116

Variational PDE Models in Image Processing.  

National Technical Information Service (NTIS)

Image processing, a traditionally engineering field, has attracted the attention of many mathematicians during the past two decades. From the vision and cognitive science point of view, image processing is a basic tool used to reconstruct the relative ord...

T. F. Chan J. Shen L. Vese

2002-01-01

117

Fast and efficient iris image enhancement using logarithmic image processing  

NASA Astrophysics Data System (ADS)

Low quality iris images such as blurry, low resolution images with poor illumination create a challenge for iris recognition systems. Therefore, an efficient enhancement of iris images are needed in challenging environments. We propose a new iris recognition algorithm for enhancement of normalized iris images. Our algorithm is based on the logarithmic image processing (LIP) image enhancement which is used as one of the 3 stages in the enhancement process. Methods are tested on the MBGC database to compare enrolled video iris images from 124 subjects with 220 pixels resolutions to query video portal images from 110 subjects with 120 pixels resolution. Results from processing challenging MBGC iris data show significant improvement in the performance of iris recognition algorithms in terms of equal error rates compared to the original (unenhanced images) and the other fast image enhancement methods.

Sazonova, Nadezhda; Schuckers, Stephanie

2010-04-01

118

GIPSY: Groningen Image Processing System  

NASA Astrophysics Data System (ADS)

GIPSY is an acronym of Groningen Image Processing SYstem. It is a highly interactive software system for the reduction and display of astronomical data. It supports multi-tasking using a versatile user interface, it has an advanced data structure, a powerful script language and good display facilities based on the X Window system. GIPSY consists of a number of components which can be divided into a number of classes: The user interfaces. Currently two user interfaces are available; one for interactive work and one for batch processing. The data structure. The display utilities. The application programs. These are the majority of programs. GIPSY was designed originally for the reduction of interferometric data from the Westerbork Synthesis Radio Telescope, but in its history of more than 20 years it has grown to a system capable of handling data from many different instruments (e.g. TAURUS, IRAS etc.).

Allen, R. J.; Ekers, R. D.; Terlouw, J. P.; Vogelaar, M. G. R.

2011-09-01

119

Image processing and pattern recognition in textiles  

Microsoft Academic Search

Image processing and pattern recognition have been successfully applied in many textile related areas. For example, they have been used in defect detection of cotton fibers and various fabrics. In this work, the application of image processing into animal fiber classification is discussed. Integrated into\\/with artificial neural networks, the image processing technique has provided a useful tool to solve complex

Lingxue Kong; F. H. She

2001-01-01

120

Computing projections of digital images in image processing pipeline architectures  

Microsoft Academic Search

This paper deals with the problem of computing projections of digital images. The novelty of our contribution is that we present algorithms which are suitable for implementation in general purpose image processing and image analysis pipeline architectures. No random access of the image memory is necessary. We propose some new pipeline configurations which achieve a remarkable degree of parallelism in

J. Sanz; E. Hinkle

1987-01-01

121

An image processing technique for fire detection in video images  

Microsoft Academic Search

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

Giuseppe Marbach; Markus Loepfe; Thomas Brupbacher

2006-01-01

122

The hybrid image processing\\/expert image analysis system  

Microsoft Academic Search

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

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

1990-01-01

123

The filter generic image dataset: a model for the creation of image-based learning & teaching resources  

Microsoft Academic Search

There are clearly numerous opportunities for the academic community to take advantage of the wealth of digital images that are available online for the purpose of resource creation. There remains, however, a general lack of understanding of how to use images effectively for learning and teaching. In certain subject areas images are under-used, possibly because of a lack of understanding

Jill Evans

2002-01-01

124

TOWARDS FULLY AUTOMATED PROCESSING OF DMC IMAGES  

Microsoft Academic Search

DMC Post Processing Software (PPS) generates DMC virtual images in 2 processing steps . This paper shortly introduces data post processing of DMC images and discusses how distributed processing (DP) can reduce production times. Users' requirements an d general design aspects are presented and the solution for a distributed processing environment is introduced. Practical experiences from a prototype implementation are

Christoph Dörstel; Sybille Traub; Dan Wuescher

125

Advanced image processing in scanning probe microscopy  

NASA Astrophysics Data System (ADS)

A single data set in scanning probe microscopy is large, typically in the megabyte range. Interpretation of these large data sets is accomplished by displaying them in image form for visualization. Image processing methods are used both to convert the data sets to visual images and to control the images to clarify features of interest. Image processing can be divided broadly into three categories: point, area, and frame. Although it seems that nearly all point processes and an impressive number of array processes are available on most commercial probe microscopes, many potentially very interesting area and frame processes are not readily available. This work presents images produced using atomic force microscope data sets. Average one-dimensional Fourier transforms of image data are used to show quantitatively tip and measuring system image degradation. The use of histogram slope data as a foundation for real time image quality monitoring is shown.

Urban, F. K., III; Romine, P.; Islam, Md. S.

1994-12-01

126

Teaching the Dance Class: Strategies to Enhance Skill Acquisition, Mastery and Positive Self-Image  

Microsoft Academic Search

Effective teaching of dance skills is informed by a variety of theoretical frameworks and individual teaching and learning styles. The purpose of this paper is to present practical teaching strategies that enhance the mastery of skills and promote self-esteem, self-efficacy, and positive self-image. The predominant thinking and primary research findings from dance pedagogy, education, physical education and sport pedagogy, and

Lynda M. Mainwaring; Donna H. Krasnow

2010-01-01

127

Imagetool: Image processing on the Sun workstation  

SciTech Connect

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.

Zander, M.E.

1991-01-01

128

Teaching Anatomy and Physiology Using Computer-Based, Stereoscopic Images  

ERIC Educational Resources Information Center

|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…

Perry, Jamie; Kuehn, David; Langlois, Rick

2007-01-01

129

Teaching Anatomy and Physiology Using Computer-Based, Stereoscopic Images  

NSDL National Science Digital Library

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.

Kuehn, David; Perry, Jamie; Langlois, Rick

2007-01-01

130

Imaging and image processing in porous media research  

Microsoft Academic Search

Three-dimensional imaging and image processing has become an important part for investigations of fluid distribution and flow in porous media. We describe two methods of computed tomography with different characteristics, namely X-ray- and neutron-based. We give an overview of image processing sequences and their methods. We investigated image enhancement with a focus on filters using partial differential equations, classification and

A. Kaestner; E. Lehmann; M. Stampanoni

2008-01-01

131

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

ERIC Educational Resources Information Center

|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

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

2012-01-01

132

Cluster-based parallel image processing toolkit  

NASA Astrophysics Data System (ADS)

Many image processing tasks exhibit a high degree of data locality and parallelism and map quite readily to specialized massively parallel computing hardware. However, as network technologies continue to mature, workstation clusters are becoming a viable and economical parallel computing resource, so it is important to understand how to use these environments for parallel image processing as well. In this paper we discuss our implementation of parallel image processing software library (the Parallel Image Processing Toolkit). The Toolkit uses a message- passing model of parallelism designed around the Message Passing Interface (MPI) standard. Experimental results are presented to demonstrate the parallel speedup obtained with the Parallel Image Processing Toolkit in a typical workstation cluster over a wide variety of image processing tasks. We also discuss load balancing and the potential for parallelizing portions of image processing tasks that seem to be inherently sequential, such as visualization and data I/O.

Squyres, J. M.; Lumsdaine, A.; Stevenson, Robert L.

1995-03-01

133

Digital processing in cardiac imaging  

Microsoft Academic Search

Summary In recent years, imaging modalities have realized the potential for digitizing images of the heart. These modalities include nuclear cardiology, echocardiography, digital subtraction angiography, computed tomography, positron emission tomography, and magnetic resonance imaging. Once the cardiac images have been digitized by the computer and formatted in a pixel array of data, the computer can perform mathematical operations on the

Ernest V. Garcia; Albert Ezekiel

1985-01-01

134

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

Microsoft Academic Search

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

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

2000-01-01

135

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

ERIC Educational Resources Information Center

|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…

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

2007-01-01

136

Classification of microorganisms using image processing techniques  

Microsoft Academic Search

This paper presents an approach to the automatic classification of microorganisms based on image-processing techniques. A computer application that processes and classifies the images has been developed. The classification is carried out using a competitive neural network. Its input pattern is evaluated from a frequency analysis of images taken through a microscope. This paper focuses on the application of this

Fernando Tadeo Rico; Teresa Alvarez; Yolanda Martin; Susana Pérez; Francisco Santos; Susana González; José Luis Arribas; Pastora Vega

2001-01-01

137

Several image processing examples by CNN  

Microsoft Academic Search

Cellular neural net templates for image processing are described. The functions performed by the templates are connected component detection, hole-filling, image thinning, shadow detection and Japanese character recognition

T. Matsumotot; T. Yokohama; H. Suzuki; R. Furukawa; A. Oshimoto; T. Shimmi; Y. Matsushita; T. Seo; L. O. Chua

1990-01-01

138

Image processing for medical diagnosis using CNN  

NASA Astrophysics Data System (ADS)

Medical diagnosis is one of the most important area in which image processing procedures are usefully applied. Image processing is an important phase in order to improve the accuracy both for diagnosis procedure and for surgical operation. One of these fields is tumor/cancer detection by using Microarray analysis. The research studies in the Cancer Genetics Branch are mainly involved in a range of experiments including the identification of inherited mutations predisposing family members to malignant melanoma, prostate and breast cancer. In bio-medical field the real-time processing is very important, but often image processing is a quite time-consuming phase. Therefore techniques able to speed up the elaboration play an important rule. From this point of view, in this work a novel approach to image processing has been developed. The new idea is to use the Cellular Neural Networks to investigate on diagnostic images, like: Magnetic Resonance Imaging, Computed Tomography, and fluorescent cDNA microarray images.

Arena, Paolo; Basile, Adriano; Bucolo, Maide; Fortuna, Luigi

2003-01-01

139

Image contrast processes in thermal and thermoacoustic imaging  

Microsoft Academic Search

Recent developments in thermal wave or more generally modulated source imaging using laser-beam, electron-beam, and ion-beam sources are discussed. Thermal wave imaging is further classified on the basis of the type of detection process used, and recent work relating to contrast mechanisms in the several classes of thermal imaging is discussed.

J. C. Murphy; J. W. MacLachlan; L. C. Aamodt

1986-01-01

140

Image Contrast Processes in Thermal and Thermoacoustic Imaging  

Microsoft Academic Search

Recent developments in thermal wave or more generally modulated source imaging using laser-, electron-, and ion-beam sources are discussed. Thermal wave imaging is further classified on the basis of the type of detection process used, and recent work relating to contrast mechanisms in the several classes of thermal imaging is discussed.

JOHN C. MURPHY; JANE W. MACLACHLAN; LEONARD C. AAMODT

1986-01-01

141

Falling Asleep and Failure among African-American Students: Rethinking Assumptions about Process Teaching.  

ERIC Educational Resources Information Center

Article investigates why process teaching fails to provide African-American students with access to literacy, delineating assumptions in process theory to explain some African-American students' failure to respond to process methods. Process discussions need to include the affective domain of teaching, particularly as it impedes African-American…

Walker, Emilie V. Siddle

1992-01-01

142

Color image processing for date quality evaluation  

Microsoft Academic Search

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

Dah Jye Lee; James K. Archibald

2010-01-01

143

The Graphic Novel Classroom: POWerful Teaching and Learning with Images  

ERIC Educational Resources Information Center

|Could you use a superhero to teach reading, writing, critical thinking, and problem solving? While seeking the answer, secondary language arts teacher Maureen Bakis discovered a powerful pedagogy that teaches those skills and more. The amazingly successful results prompted her to write this practical guide that shows middle and high school…

Bakis, Maureen

2011-01-01

144

Medical imaging education in biomedical engineering curriculum: courseware development and application through a hybrid teaching model.  

PubMed

Medical Imaging is a key training component in Biomedical Engineering programs. Medical imaging education is interdisciplinary training, involving physics, mathematics, chemistry, electrical engineering, computer engineering, and applications in biology and medicine. Seeking an efficient teaching method for instructors and an effective learning environment for students has long been a goal for medical imaging education. By the support of NSF grants, we developed the medical imaging teaching software (MITS) and associated dynamic assessment tracking system (DATS). The MITS/DATS system has been applied to junior and senior medical imaging classes through a hybrid teaching model. The results show that student's learning gain improved, particularly in concept understanding and simulation project completion. The results also indicate disparities in subjective perception between junior and senior classes. Three institutions are collaborating to expand the courseware system and plan to apply it to different class settings. PMID:23367069

Zhao, Weizhao; Li, Xiping; Chen, Hairong; Manns, Fabrice

2012-01-01

145

A parallel processing system of images  

NASA Astrophysics Data System (ADS)

In order to speedup image processing in embedded environment, we construct a parallel processing system of images. The parallel processing system includes a parallel hardware, a new defined language for parallel image processing and a set of software tools. From the view of high performance, low power dissipation and the characteristics of image processing, we construct a SIMD coprocessor as an image processing accelerator. Using a RISC host processor manages the whole system. The SIMD processor is scalable. We also define a new language which is extended from standard C. A new data type "stream" and a new keyword "kernel" are added to the language to explicitly describe parallelism. For the new hardware and language of parallel image processing, we also research software tools for this parallel system. The software tools maps programs to code that runs on the new hardware. For example develop a scheduler to transfer stream data between memories and register files. From the analysis we found that the parallel image processing system can not only match image applications' characteristics but also easy to implement by using VLSI technology. With new language and software tools supporting, an embedded real-time parallel image processing system becomes available for programmers.

Duan, ZongTao; Zhou, XingShe

2005-11-01

146

Astronomical Image Processing with Hadoop  

Microsoft Academic Search

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

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

2011-01-01

147

Combining advanced imaging processing and low cost remote imaging capabilities  

NASA Astrophysics Data System (ADS)

Target images are very important for evaluating the situation when Unattended Ground Sensors (UGS) are deployed. These images add a significant amount of information to determine the difference between hostile and non-hostile activities, the number of targets in an area, the difference between animals and people, the movement dynamics of targets, and when specific activities of interest are taking place. The imaging capabilities of UGS systems need to provide only target activity and not images without targets in the field of view. The current UGS remote imaging systems are not optimized for target processing and are not low cost. McQ describes in this paper an architectural and technologic approach for significantly improving the processing of images to provide target information while reducing the cost of the intelligent remote imaging capability.

Rohrer, Matthew J.; McQuiddy, Brian

2008-05-01

148

Survey: Interpolation Methods in Medical Image Processing  

Microsoft Academic Search

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;

Thomas Martin Lehmann; Claudia Gönner; Klaus Spitzer

1999-01-01

149

Visualizing Air Pollutants through Image Processing  

Microsoft Academic Search

In this paper we present a new method to visualize air pollutant through image processing. In order to achieve a realistic effect, we further enhance thus above obtained images in spatial domain. In the proposed method we map the densities of air pollutants to different gray levels, and visualize them by blending those gray levels with background images. The proposed

Wang Demin; Zhang Caiming; Huang Yan; Li Weitao

2010-01-01

150

Digital image processing of metric camera imagery  

Microsoft Academic Search

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.

P. Lohmann

1985-01-01

151

Matching rendered and real world images by digital image processing  

NASA Astrophysics Data System (ADS)

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.

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

2010-04-01

152

Image processing in applied optics educational programs  

NASA Astrophysics Data System (ADS)

The acquisition and processing of images has grown into a routine tool used in research and industry today. Image processing tools can also be employed by students to better understand the basic science of the phenomena that they ar studying. Even though students may be able to visualize the physical phenomena of interest during a particular laboratory experiment they often find it difficult to record and quantify their experimental results. Fortunately, computer hardware along with cameras of sufficient resolution are now available to assist in the acquisition of images and sufficiently powerful image processing software is available to perform analysis and measurements on these images. The use of image processing and image acquisition in applied optics lab courses will be discussed. An interdisciplinary program that incorporates image processing and computer graphics into our curriculum will also be discussed. Faculty members from the Physics and Applied Optics, Electrical and Computer Engineering, and Computer Science Departments pooled their resources to create an Imaging Systems Laboratory. We now offer an Imaging Systems Certificate to students of any major at Rose-Hulman who complete a sequence of courses and an imaging project.

Bunch, Robert M.

1995-10-01

153

Parallel processing considerations for image recognition tasks  

NASA Astrophysics Data System (ADS)

Many image recognition tasks are well-suited to parallel processing. The most obvious example is that many imaging tasks require the analysis of multiple images. From this standpoint, then, parallel processing need be no more complicated than assigning individual images to individual processors. However, there are three less trivial categories of parallel processing that will be considered in this paper: parallel processing (1) by task; (2) by image region; and (3) by meta-algorithm. Parallel processing by task allows the assignment of multiple workflows-as diverse as optical character recognition [OCR], document classification and barcode reading-to parallel pipelines. This can substantially decrease time to completion for the document tasks. For this approach, each parallel pipeline is generally performing a different task. Parallel processing by image region allows a larger imaging task to be sub-divided into a set of parallel pipelines, each performing the same task but on a different data set. This type of image analysis is readily addressed by a map-reduce approach. Examples include document skew detection and multiple face detection and tracking. Finally, parallel processing by meta-algorithm allows different algorithms to be deployed on the same image simultaneously. This approach may result in improved accuracy.

Simske, Steven J.

2011-01-01

154

The Positioning of Students in Newly Qualified Secondary Teachers' Images of Their "Best Teaching"  

ERIC Educational Resources Information Center

|Asking newly qualified teachers (NQTs) to provide images of their "best teaching", and encouraging subsequent reflection on these images, has the potential to enhance their understanding of themselves as teachers as they explore their often unconsciously held assumptions about students and classrooms. This paper reports aspects of a study of 100…

Haigh, Mavis; Kane, Ruth; Sandretto, Susan

2012-01-01

155

Digital image processing system for Landsat 3  

Microsoft Academic Search

A digital image processing system to support the Landsat 3 mission is discussed. NASA will provide the data reception and preprocessing facilities, while the DOE provides the production image processing system that generates film products and computer compatible tapes for users. The system was installed at the Earth Resources Observation System Data Center (EDC), and it is capable of operating

G. Harris Jr.

1979-01-01

156

Image processing for medical diagnosis using CNN  

Microsoft Academic Search

Medical diagnosis is one of the most important area in which image processing procedures are usefully applied. Image processing is an important phase in order to improve the accuracy both for diagnosis procedure and for surgical operation. One of these fields is tumor\\/cancer detection by using Microarray analysis. The research studies in the Cancer Genetics Branch are mainly involved in

Paolo Arena; Adriano Basile; Maide Bucolo; Luigi Fortuna

2003-01-01

157

Preconscious processing of body image cues  

Microsoft Academic Search

Objective: There is considerable evidence that body image is an elastic construct, which can be influenced by environmental and internal factors. The present study used a visual subliminal processing paradigm, with the aim of determining the impact of preconscious processing of verbal cues upon body image (percept and concept). Method: Forty nonclinical women completed measures of body percept and concept

Glenn Waller; Juliette Barnes

2002-01-01

158

Grain Counting Method Based On Image Processing  

Microsoft Academic Search

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

Zhao Ping; Li Yongkui

2009-01-01

159

Image processing with neural networks - a review  

Microsoft Academic Search

We review more than two hundred applications of neural networks in image processing and discuss the present and possible future role of neural networks, especially feed-forward neural networks, Kohonen feature maps and Hopfield neural networks. The various applications are categorised into a novel two-dimensional taxonomy for image processing algorithms. One dimension specifies the type of task performed by the algorithm:

Michael Egmont-petersen; D. De Ridder; H. Handels

2002-01-01

160

Biomedical image analysis and processing in clouds  

NASA Astrophysics Data System (ADS)

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.

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

161

Automatic processing, analysis, and recognition of images  

NASA Astrophysics Data System (ADS)

New approaches and computer codes (A&CC) for automatic processing, analysis and recognition of images are offered. The A&CC are based on presentation of object image as a collection of pixels of various colours and consecutive automatic painting of distinguished itself parts of the image. The A&CC have technical objectives centred on such direction as: 1) image processing, 2) image feature extraction, 3) image analysis and some others in any consistency and combination. The A&CC allows to obtain various geometrical and statistical parameters of object image and its parts. Additional possibilities of the A&CC usage deal with a usage of artificial neural networks technologies. We believe that A&CC can be used at creation of the systems of testing and control in a various field of industry and military applications (airborne imaging systems, tracking of moving objects), in medical diagnostics, at creation of new software for CCD, at industrial vision and creation of decision-making system, etc. The opportunities of the A&CC are tested at image analysis of model fires and plumes of the sprayed fluid, ensembles of particles, at a decoding of interferometric images, for digitization of paper diagrams of electrical signals, for recognition of the text, for elimination of a noise of the images, for filtration of the image, for analysis of the astronomical images and air photography, at detection of objects.

Abrukov, Victor S.; Smirnov, Evgeniy V.; Ivanov, Dmitriy G.

2004-11-01

162

SUPRIM: easily modified image processing software.  

PubMed

A flexible, modular software package intended for the processing of electron microscopy images is presented. The system consists of a set of image processing tools or filters, written in the C programming language, and a command line style user interface based on the UNIX shell. The pipe and filter structure of UNIX and the availability of command files in the form of shell scripts eases the construction of complex image processing procedures from the simpler tools. Implementation of a new image processing algorithm in SUPRIM may often be performed by construction of a new shell script, using already existing tools. Currently, the package has been used for two- and three-dimensional image processing and reconstruction of macromolecules and other structures of biological interest. PMID:8742734

Schroeter, J P; Bretaudiere, J P

163

Wavelet-aided pavement distress image processing  

Microsoft Academic Search

A wavelet-based pavement distress detection and evaluation method is proposed. This method consists of two main parts, real-time processing for distress detection and offline processing for distress evaluation. The real-time processing part includes wavelet transform, distress detection and isolation, and image compression and noise reduction. When a pavement image is decomposed into different frequency subbands by wavelet transform, the distresses,

Jian Zhou; Peisen S. Huang; Fu-Pen Chiang

2003-01-01

164

Process perspective on image quality evaluation  

NASA Astrophysics Data System (ADS)

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.

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

2008-01-01

165

Collective Bargaining and the Teaching-Learning Process. QUEST Paper 11.  

ERIC Educational Resources Information Center

In the controversy over the inclusion of the teaching-learning process (curriculum development and instruction) as a subject of collective bargaining, discussion should focus on the changes which it might produce in the teaching-learning process. Curriculum development is unlikely to be greatly affected by collective bargaining, and any changes in…

Sperling, John G.

166

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

ERIC Educational Resources Information Center

|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…

Lewis Sanchez, Louise

2007-01-01

167

Image processing technology for enhanced situational awareness  

NASA Astrophysics Data System (ADS)

This paper discusses the integration of a number of advanced image and data processing technologies in support of the development of next-generation Situational Awareness systems for counter-terrorism and crime fighting applications. In particular, the paper discusses the European Union Framework 7 'SAMURAI' project, which is investigating novel approaches to interactive Situational Awareness using cooperative networks of heterogeneous imaging sensors. Specific focus is given to novel Data Fusion aspects of the research which aim to improve system performance through intelligently fusing both image data and non image data sources, resolving human-machine conflicts, and refining the Situational Awareness picture. In addition, the paper highlights some recent advances in supporting image processing technologies. Finally, future trends in image-based Situational Awareness are identified, such as Post-Event Analysis (also known as 'Back-Tracking'), and the associated technical challenges are discussed.

Page, S. F.; Smith, M. I.; Hickman, D.

2009-09-01

168

Interactive image processing in swallowing research  

NASA Astrophysics Data System (ADS)

Dynamic radiographic imaging of the mouth, larynx, pharynx, and esophagus during swallowing is used commonly in clinical diagnosis, treatment and research. Images are recorded on videotape and interpreted conventionally by visual perceptual methods, limited to specific measures in the time domain and binary decisions about the presence or absence of events. An image processing system using personal computer hardware and original software has been developed to facilitate measurement of temporal, spatial and temporospatial parameters. Digitized image sequences derived from videotape are manipulated and analyzed interactively. Animation is used to preserve context and increase efficiency of measurement. Filtering and enhancement functions heighten image clarity and contrast, improving visibility of details which are not apparent on videotape. Distortion effects and extraneous head and body motions are removed prior to analysis, and spatial scales are controlled to permit comparison among subjects. Effects of image processing on intra- and interjudge reliability and research applications are discussed.

Dengel, Gail A.; Robbins, Joanne; Rosenbek, John C.

1991-06-01

169

Generalized bidirectional associative memories for image processing  

NASA Astrophysics Data System (ADS)

The bidirectional associative memory (BAM) so far is limited to two input/output patterns. Recently, Humpert has suggested the generalization of the BAM to a bidirectional associative memory with several input/output patterns (BAMg). The generalization of the BAM to the BAMg raises several interesting questions regarding the inter-connections and updating of neuron fields. Some of the possible configurations of the BAMg are investigated in the paper. The BAMg is very useful in many image processing applications where-in storage and retrieval of sets of images is required. Each set may contain two or more images. In this paper, we have developed a software simulation for the BAMg, and have used the BAMg to store and retrieve three sets of images. Each set consists of three images. During the retrieval partial or noisy images are used as the stimulus vectors to retrieve corresponding images in other sets. The results are presented in the paper.

Kulkarni, Arun D.; Yazdapanhi, Iraj

1992-11-01

170

A JAVA FRAMEWORK FOR ANALYSING AND PROCESSING WOUND IMAGES FOR MEDICAL EDUCATION  

Microsoft Academic Search

The paper presents a Java framework for analysing and processing wound images, which are incorporated in e- learning tools, to be used by both the students and the teaching staff in their didactic and research activities. We implement in Java traditional methods and algorithms for analysing a digital picture of a wound from a specific distance, for identifying its boundaries

Augustin Prodan; Madalina Rusu; Remus Campean; Rodica Prodan

171

STOCHASTIC MODELS IN IMAGE ANALYSIS AND PROCESSING  

Microsoft Academic Search

This study is concerned with the analysis and processing of one-dimensional image boundaries and two-dimensional images using a class of stochastic models. For the boundary data, univariate and multivariate circular autoregressive models (CAR) are suggested. Methods of estimation of parameters of the model and a decision rule for the choice of appropriate order of the model are given. Features that

RAMALINGAM CHELLAPPA

1981-01-01

172

Stereo Image Processing Procedure for Vision Rehabilitation  

Microsoft Academic Search

This article presents a review on vision-aided systems and proposes an approach for visual rehabilitation using stereo vision technology. The proposed system utilizes stereo vision, image processing methodology, and a sonification procedure to support blind mobilization. The developed system includes wearable computer, stereo cameras as vision sensor, and stereo earphones, all molded in a helmet. The image of the scene

G. Balakrishnan; G. Sainarayanan

2008-01-01

173

Parallel Distributed System for SAR Image Processing.  

National Technical Information Service (NTIS)

Synthetic Aperture Radar (SAR) image focusing involves the processing of a large amount of data, thus requiring a very high elaboration time if a sequential machine is used. Should high precision be desired on the final image, the computer time can increa...

G. Franceschetti A. Mazzeo N. Mazzoca V. Pascazio G. Schirinzi

1990-01-01

174

HYPERSPECTRAL IMAGING FOR FOOD PROCESSING AUTOMATION  

Technology Transfer Automated Retrieval System (TEKTRAN)

A hyperspectral imaging system 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 inc...

175

Order statistics in digital image processing  

Microsoft Academic Search

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

IOANNIS PITAS; ANASTASIOS N. VENETSANOPOULOS

1992-01-01

176

Medical image processing with optical Fourier techniques  

Microsoft Academic Search

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

Pengfei Wu

2003-01-01

177

Digital Image Processing in Private Industry.  

ERIC Educational Resources Information Center

|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…

Moore, Connie

1986-01-01

178

Improving Teaching through a Peer Support "Teacher Consultation Process."  

ERIC Educational Resources Information Center

The Teaching Consultation Program (TCP) is one of the most popular faculty development programs offered in the University of Kentucky Community Colleges (UKCC's), having trained over 500 faculty since its implementation in 1977. The TCP is a confidential, peer consulting program available to faculty who wish to analyze their teaching behaviors and…

Kerwin, Mike; Rhoads, Judith

179

Overview on Pyramid Machines for Image Processing.  

National Technical Information Service (NTIS)

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. (ERA citati...

V. Di Gesu

1986-01-01

180

Digital Image Processing Applied to Traffic Surveillance.  

National Technical Information Service (NTIS)

Digital image processing is used in analyzing video tapes recorded for traffic flow analysis. Problem-oriented data reduction and organization is used to reduce the computational load and to simplify the analysis. Vehicles are detected by looking for non-...

A. E. Rantala

1984-01-01

181

Architecture for Higher Level Digital Image Processing.  

National Technical Information Service (NTIS)

This is the second quarterly status report on a program to investigate various approaches to the design of architecture for higher level digital image processing algorithms being conducted by the Westinghouse Systems Development Division for the Computer ...

T. J. Willett

1978-01-01

182

Image Processing Techniques for Shape Recognition.  

National Technical Information Service (NTIS)

Shape recognition is the fundamental function of robot visual system, and adequate combination of image processing of the robot visual sensor, VR-1000, and the instrumentation principle of a cashless cafeteria system as the examples of shape recognition t...

Y. Hongo K. Edamatsu T. Kiuchi M. Nito A. Konno

1986-01-01

183

Nuclear imaging of molecular processes in cancer  

Microsoft Academic Search

Molecular imaging using radionuclides has brought about the possibility to image a wide range of molecular processes using\\u000a radiotracers injected into the body at very low concentrations that should not perturb the processes being studied. Examples\\u000a include specific peptide receptor expression, angiogenesis, multi drug resistance, hypoxia, glucose metabolism, and many others.\\u000a This article presents an overview, aimed at the non-specialist

Rafael Torres Martin de Rosales; Erik Årstad; Philip J. Blower

2009-01-01

184

Instruction systolic array in image processing applications  

NASA Astrophysics Data System (ADS)

The ISATEC parallel computer is the first implementation of an instruction systolic array for the commercial market. The goal i\\of integration of 1024 processors on an add-on-board for PCs has been achieved by the development of a low- power/low-area processor architecture whose instruction set is suited particularly for image processing applications. The paper introduces the concept of the instruction systolic array, its implementation and some application examples in the field of image processing.

Schimmler, Manfred; Lang, Hans-Werner

1996-08-01

185

Medical Image Processing in MediGRID  

Microsoft Academic Search

In MediGRID a diverse spectrum of application scenarios from areas of bioinformatics, medical image processing, numerical simulations and clinical trials will be integrated into a Grid environment. In this paper we present the MediGRID infrastructure especially as required by med- ical image processing. Motivated by this selected application scenario the major MediGRID components i) enhanced security requirements ii) data management,

S. Kottha; K. Peter; T. Steinke; J. Bart; J. Falkner; A. Weisbecker; F. Viezens; Y. Mohammed; U. Sax; A. Hoheisel; T. Ernst; D. Sommerfeld; D. Krefting; M. Vossberg

2007-01-01

186

Color image processing for date quality evaluation  

NASA Astrophysics Data System (ADS)

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.

Lee, Dah Jye; Archibald, James K.

2010-01-01

187

Teaching Image Computation: From Computer Graphics to Computer Vision  

Microsoft Academic Search

This paper describes a course in image computation that is designed to follow and build off an established course in computer graphics. The course is centered on images: how they are generated, manipulated, matched, and symbolically described. It builds on student's knowledge of coordinate systems and the perspective projection pipeline. It covers image generation techniques not covered by the computer

Bruce A. Draper; J. Ross Beveridge

2001-01-01

188

Use of Customized Digital Images for Teaching Human Anatomy.  

ERIC Educational Resources Information Center

Describes a technique for downloading digital images of a fresh human cadaver from a commercially available CD-ROM and from the Internet. The images can be annotated to illustrate specific anatomic features and display groups of images in a format that is easy to use during lectures and accessible to undergraduate students for study during and…

Harris, David E.

1997-01-01

189

Nanosecond image processing using stimulated photon echoes  

NASA Astrophysics Data System (ADS)

Processing of two-dimensional images on a nanosecond time scale is demonstrated using the stimulated photon echoes in a rare-earth-doped crystal of 0.1 at. pct Pr(3+):LaF3. Two spatially encoded laser pulses (pictures) resonant with the 3P0-3H4 transition of Pr(3+) were stored by focusing the image pulses sequentially into the Pe(3+):LaF3 crystal. The stored information is retrieved and processed by a third read pulse, generating the echo that is the spatial convolution or correlation of the input images. Application of this scheme to high-speed pattern recognition is discussed.

Xu, E. Y.; Kroll, S.; Huestis, D. L.; Kachru, R.; Kim, M. K.

1990-05-01

190

Rotation covariant image processing for biomedical applications.  

PubMed

With the advent of novel biomedical 3D image acquisition techniques, the efficient and reliable analysis of volumetric images has become more and more important. The amount of data is enormous and demands an automated processing. The applications are manifold, ranging from image enhancement, image reconstruction, and image description to object/feature detection and high-level contextual feature extraction. In most scenarios, it is expected that geometric transformations alter the output in a mathematically well-defined manner. In this paper we emphasis on 3D translations and rotations. Many algorithms rely on intensity or low-order tensorial-like descriptions to fulfill this demand. This paper proposes a general mathematical framework based on mathematical concepts and theories transferred from mathematical physics and harmonic analysis into the domain of image analysis and pattern recognition. Based on two basic operations, spherical tensor differentiation and spherical tensor multiplication, we show how to design a variety of 3D image processing methods in an efficient way. The framework has already been applied to several biomedical applications ranging from feature and object detection tasks to image enhancement and image restoration techniques. In this paper, the proposed methods are applied on a variety of different 3D data modalities stemming from medical and biological sciences. PMID:23710255

Skibbe, Henrik; Reisert, Marco

2013-04-18

191

Elements of image processing in localization microscopy  

NASA Astrophysics Data System (ADS)

Localization microscopy software generally contains three elements: a localization algorithm to determine fluorophore positions on a specimen, a quality control method to exclude imprecise localizations, and a visualization technique to reconstruct an image of the specimen. Such algorithms may be designed for either sparse or partially overlapping (dense) fluorescence image data, and making a suitable choice of software depends on whether an experiment calls for simplicity and resolution (favouring sparse methods), or for rapid data acquisition and time resolution (requiring dense methods). We discuss the factors involved in this choice. We provide a full set of MATLAB routines as a guide to localization image processing, and demonstrate the usefulness of image simulations as a guide to the potential artefacts that can arise when processing over-dense experimental fluorescence images with a sparse localization algorithm.

Rees, Eric J.; Erdelyi, Miklos; Kaminski Schierle, Gabriele S.; Knight, Alex; Kaminski, Clemens F.

2013-09-01

192

Adaptive image acquisition and processing with image analysis feedback  

US Patent & Trademark Office Database

Described are systems, methods, computer programs, and user interfaces for image location, acquisition, analysis, and data correlation that uses human-in-the-loop processing, Human Intelligence Tasks (HIT), and/or or automated image processing. Results obtained using image analysis are correlated to non-spatial information useful for commerce and trade. For example, images of regions of interest of the earth are used to count items (e.g., cars in a store parking lot to predict store revenues), detect events (e.g., unloading of a container ship, or evaluating the completion of a construction project), or quantify items (e.g., the water level in a reservoir, the area of a farming plot).

2013-02-19

193

Evolution of image processing methods for pulsed thermal imaging  

NASA Astrophysics Data System (ADS)

Pulsed thermal imaging is a commonly used infrared thermal imaging technology for nondestructive evaluation of engineering materials. It provides a complete interrogation and therefore a potentially complete quantification of the thermal properties of a test material. Two distinct applications have been pursued in the development of data/imaging processing methods: one for material property measurement and the other for flaw or discontinuity detection. For property measurement, theoretical models for one-and multi-layer materials are used to determine thickness-averaged material properties. For flaw detection, various image-processing methods are developed to enhance and extract the thermal contrast induced by subsurface flaw/discontinuities. This study examines the evolution of these methods and compares the differences of flaw-detection methods for detection and characterization of delamination flaws.

Sun, J. G.

2013-01-01

194

Destriping IRS image based on image processing methods  

NASA Astrophysics Data System (ADS)

China Environment and disaster monitoring and forecasting satellite was successfully launched in 2008, the Infrared Multispectral Camera (IRS) on the satellite compared to other similar instruments has outstanding features and widely application. However, because it scans by multiple sensors and differential sensitivities of sensors to incoming radiation, the images display periodic strips, it impacts follow-up quantitative research. In this paper, image processing methods, including two-point algorithm based on image, histogram matching algorithm and moment matching algorithm are put into practice in destriping IRS thermal infrared channel images, also called non-uniformity correction. By evaluating the average line of standard deviation, the average standard deviation and generalized noise law, strips caused by nonuniformity has been significantly removed. In addition, characteristic of image strips in the frequency domain is also obvious.

Chen, Qiang; Hu, Yong; Gong, Cailan; Yin, Qiu

2011-04-01

195

Corn tassel detection based on image processing  

NASA Astrophysics Data System (ADS)

Machine vision has been widely applied in facility agriculture, and played an important role in obtaining environment information. In this paper, it is studied that application of image processing to recognize and locate corn tassel for corn detasseling machine. The corn tassel identification and location method was studied based on image processing and automated technology guidance information was provided for the actual production of corn emasculation operation. The system is the application of image processing to recognize and locate corn tassel for corn detasseling machine. According to the color characteristic of corn tassel, image processing techniques was applied to identify corn tassel of the images under HSI color space and Image segmentation was applied to extract the part of corn tassel, the feature of corn tassel was analyzed and extracted. Firstly, a series of preprocessing procedures were done. Then, an image segmentation algorithm based on HSI color space was develop to extract corn tassel from background and region growing method was proposed to recognize the corn tassel. The results show that this method could be effective for extracting corn tassel parts from the collected picture and can be used for corn tassel location information; this result could provide theoretical basis guidance for corn intelligent detasseling machine.

Tang, Wenbing; Zhang, Yane; Zhang, Dongxing; Yang, Wei; Li, Minzan

2012-01-01

196

Scalable architectures for image processing  

NASA Astrophysics Data System (ADS)

Our study consists of three phases: mapping the algorithms on the three topologies, simulating the execution of these algorithms, and design of the array. Our mapping follows the standard methodology proposed for the design of systolic arrays, since our application domain is very specific and the selected algorithms very regular. After the mapping is done we simulate the algorithms using the SES/workbench simulation package which allows us to collect statistics on the execution time and efficiency of our mappings and evaluate the performance of the three topologies in our application domain using different array and problem sizes. For each algorithm and topology the range of scalability is determined as a function of image size. In the design phase we propose an SIMD array with 2-D torus interconnection topology as a cost- efficient solution to the scalable implementation of the selected algorithms. Considerations entering the design phase are performance as determined by simulations, cost of implementation, and ease of scaling the machine size.

Diamantaras, K. I.; Chihoub, Aziz; Zawadzki, Andrzej

1993-08-01

197

Educational Technology and the Teaching-Learning Process. A Selected Bibliography.  

ERIC Educational Resources Information Center

|Intended to be helpful to nursing education staff, this bibliography is an introduction to the literature on the teaching-learning process and on the various new approaches in the field of teaching technology. The selection was confined mainly to recent publications, with a cutoff date of July 1, 1969. Citations are listed alphabetically by…

Berthold, Jeanne Saylor; And Others

198

Using Process and Inqury to Teach Content: Projectile Motion and Graphing  

ERIC Educational Resources Information Center

These series of lessons uses the process of student inquiry to teach the concepts of force and motion identified in the National Science Education Standards for grades 5-8. The lesson plan also uses technology as a teaching tool through the use of interactive Web sites. The lessons are built on the 5-E format and feature imbedded assessments.

Rhea, Marilyn; Lucido, Patricia; Gregerson-Malm, Cheryl

2005-01-01

199

Using Process and Inquiry to Teach Content: Projectile Motion and Graphing  

Microsoft Academic Search

These series of lessons uses the process of student inquiry to teach the concepts of force and motion identified in the National Science Education Standards for grades 5-8. The lesson plan also uses technology as a teaching tool through the use of interactive Web sites. The lessons are built on the 5-E format and feature imbedded assessments.

Marilyn Rhea; Patricia Lucido; Cheryl Gregerson-Malm

2005-01-01

200

Teaching Team Software Process in Graduate Courses to Increase Productivity and Improve Software Quality  

Microsoft Academic Search

This paper presents a case study that describes TSPi teaching (introduction to the team software process) to 4th year students, grouped by teams, at the Computer Science School, Polytechnic University of Madrid (UPM). The achievements of the teams, due to training and the use of TSPi, were analyzed and discussed. This paper briefly discusses the approach to the teaching and

Sussy Bayona Oré; Jose Antonio Calvo-manzano; Gonzalo Cuevas Agustín; Tomás San Feliu Gilabert

2008-01-01

201

An Emphasis on Perception: Teaching Image Formation Using a Mechanistic Model of Vision.  

ERIC Educational Resources Information Center

An effective way to teach the concept of image is to give students a model of human vision which incorporates a simple mechanism of depth perception. In this study two almost identical versions of a curriculum in geometrical optics were created. One used a mechanistic, interpretive eye model, and in the other the eye was modeled as a passive,…

Allen, Sue; And Others

202

Early Childhood Education Pre-Service Teachers' Images of Teacher and Beliefs about Teaching  

Microsoft Academic Search

The purpose of this qualitative case study was to explore early childhood education pre-service teachers' images of an early childhood education teacher and their beliefs about teaching. 14 pre-service teachers at a Northeastern State University in the United States of America agreed to participate in the study. A survey questionnaire, participants' journal entries, and artifacts created by the participants were

Jale ALDEMIR; Ozcan SEZER

2009-01-01

203

Aerial image processing technology for emergency response  

Microsoft Academic Search

Examples of imagery from experimental oil spills in the North Sea during August 1993 are presented to illustrate how remote sensing imagery, if integrated into spill management systems, can affect the decision making process. Time series data from multiple sensor types can be processed and interpreted from a response perspective using new spatial data management and imaging software to aid

Charles P. Giammona; Kandace S. Binkley; F. Rainer Engelhardt; James D. Nichols; Sally Buechel

1995-01-01

204

Detected by Image Processing and GIs Information  

Microsoft Academic Search

data mapped on GIs, and evaluate the performance of im- age processing algorithm. The real burnt areas and the real In this report we compare the damaged areas by an earth- totally damaged building areas are shown in Figure 2 and quake detected by using image processing from aerial Figure 3, respectively. These data show the damage as ar- photographs

Kensuke SHIRAKI; Masato ISHII; Takahiro SUGIYAMA; Keiichi ABE

2002-01-01

205

Automated fruit grading system using image processing  

Microsoft Academic Search

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

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

2002-01-01

206

Image Processing on Encoded Video Sequences  

Microsoft Academic Search

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

Farshid Arman; Arding Hsu; Ming-yee Chiu

1994-01-01

207

Image Processing Application for Cognition (IPAC) - Traditional and Emerging Topics in Image Processing in Astronomy (Invited)  

NASA Astrophysics Data System (ADS)

A new application framework for advanced image processing for astronomy is presented. It implements standard two-dimensional operators, and recent developments in the field of non-astronomical image processing (IP), as well as original algorithms based on nonlinear partial differential equations (PDE). These algorithms are especially well suited for multi-scale astronomical images since they increase signal to noise ratio without smearing localized and diffuse objects. The visualization component is based on the extensive tools that we developed for Spitzer Space Telescope's observation planning tool Spot and archive retrieval tool Leopard. It contains many common features, combines images in new and unique ways and interfaces with many astronomy data archives. Both interactive and batch mode processing are incorporated. In the interactive mode, the user can set up simple processing pipelines, and monitor and visualize the resulting images from each step of the processing stream. The system is platform-independent and has an open architecture that allows extensibility by addition of plug-ins. This presentation addresses astronomical applications of traditional topics of IP (image enhancement, image segmentation) as well as emerging new topics like automated image quality assessment (QA) and feature extraction, which have potential for shaping future developments in the field. Our application framework embodies a novel synergistic approach based on integration of image processing, image visualization and image QA (iQA).

Pesenson, M.; Roby, W.; Helou, G.; McCollum, B.; Ly, L.; Wu, X.; Laine, S.; Hartley, B.

2008-08-01

208

JIP: Java image processing on the Internet  

NASA Astrophysics Data System (ADS)

In this paper, we present JIP - Java Image Processing on the Internet, a new Internet based application for remote education and software presentation. JIP offers an integrate learning environment on the Internet where remote users not only can share static HTML documents and lectures notes, but also can run and reuse dynamic distributed software components, without having the source code or any extra work of software compilation, installation and configuration. By implementing a platform-independent distributed computational model, local computational resources are consumed instead of the resources on a central server. As an extended Java applet, JIP allows users to selected local image files on their computers or specify any image on the Internet using an URL as input. Multimedia lectures such as streaming video/audio and digital images are integrated into JIP and intelligently associated with specific image processing functions. Watching demonstrations an practicing the functions with user-selected input data dramatically encourages leaning interest, while promoting the understanding of image processing theory. The JIP framework can be easily applied to other subjects in education or software presentation, such as digital signal processing, business, mathematics, physics, or other areas such as employee training and charged software consumption.

Wang, Dongyan; Lin, Bo; Zhang, Jun

1998-12-01

209

Teaching the process of science: faculty perceptions and an effective methodology.  

PubMed

Most scientific endeavors require science process skills such as data interpretation, problem solving, experimental design, scientific writing, oral communication, collaborative work, and critical analysis of primary literature. These are the fundamental skills upon which the conceptual framework of scientific expertise is built. Unfortunately, most college science departments lack a formalized curriculum for teaching undergraduates science process skills. However, evidence strongly suggests that explicitly teaching undergraduates skills early in their education may enhance their understanding of science content. Our research reveals that faculty overwhelming support teaching undergraduates science process skills but typically do not spend enough time teaching skills due to the perceived need to cover content. To encourage faculty to address this issue, we provide our pedagogical philosophies, methods, and materials for teaching science process skills to freshman pursuing life science majors. We build upon previous work, showing student learning gains in both reading primary literature and scientific writing, and share student perspectives about a course where teaching the process of science, not content, was the focus. We recommend a wider implementation of courses that teach undergraduates science process skills early in their studies with the goals of improving student success and retention in the sciences and enhancing general science literacy. PMID:21123699

Coil, David; Wenderoth, Mary Pat; Cunningham, Matthew; Dirks, Clarissa

2010-01-01

210

Teaching the Process of Science: Faculty Perceptions and an Effective Methodology  

PubMed Central

Most scientific endeavors require science process skills such as data interpretation, problem solving, experimental design, scientific writing, oral communication, collaborative work, and critical analysis of primary literature. These are the fundamental skills upon which the conceptual framework of scientific expertise is built. Unfortunately, most college science departments lack a formalized curriculum for teaching undergraduates science process skills. However, evidence strongly suggests that explicitly teaching undergraduates skills early in their education may enhance their understanding of science content. Our research reveals that faculty overwhelming support teaching undergraduates science process skills but typically do not spend enough time teaching skills due to the perceived need to cover content. To encourage faculty to address this issue, we provide our pedagogical philosophies, methods, and materials for teaching science process skills to freshman pursuing life science majors. We build upon previous work, showing student learning gains in both reading primary literature and scientific writing, and share student perspectives about a course where teaching the process of science, not content, was the focus. We recommend a wider implementation of courses that teach undergraduates science process skills early in their studies with the goals of improving student success and retention in the sciences and enhancing general science literacy.

Coil, David; Wenderoth, Mary Pat; Cunningham, Matthew

2010-01-01

211

Perceptions and Images of North Africa: What American Schools Teach.  

ERIC Educational Resources Information Center

Examined descriptions of North Africa (particularly Tunisia) found in U.S. high school social studies textbooks, noting the resulting perceptions and images these descriptions created in the minds of teachers and students. Data from examination of textbooks and interviews with teachers indicated that few high school students were exposed to images

Robinson, Victoria

2002-01-01

212

Representing Clinical Information in an Internal Medicine Teaching Image Database  

Microsoft Academic Search

INTRODUCTIONDigital image collections are becoming increasinglypervasive in medicine, and offer significant potentialadvantages to their analog counterparts. Theseinclude the potential for distributed simultaneousaccess by several users, reduced risk of image loss,and more powerful indexing to aid in imageretrieval1. Important factors in optimizing retrieval ofimages in such a collection include the selection of anappropriate data model and the use of a standardterminology

Jason A. Lyman; William Hersh; Kent Spackman

213

Colour model analysis for microscopic image processing  

PubMed Central

This article presents a comparative study between different colour models (RGB, HSI and CIEL*a*b*) applied to a very large microscopic image analysis. Such analysis of different colour models is needed in order to carry out a successful detection and therefore a classification of different regions of interest (ROIs) within the image. This, in turn, allows both distinguishing possible ROIs and retrieving their proper colour for further ROI analysis. This analysis is not commonly done in many biomedical applications that deal with colour images. Other important aspects is the computational cost of the different processing algorithms according to the colour model. This work takes these aspects into consideration to choose the best colour model tailored to the microscopic stain and tissue type under consideration and to obtain a successful processing of the histological image.

Bueno, Gloria; Gonzalez, Roberto; Deniz, Oscar; Gonzalez, Jesus; Garcia-Rojo, Marcial

2008-01-01

214

Multivariate Image Analysis in Mineral Processing  

Microsoft Academic Search

\\u000a In several process industries including mineral processing, where the materials are solids or slurries, some important measurements\\u000a cannot be obtained using standard instrumentation (e.g., flow, temperature, pressure, pH, power draw, etc.), but can be visually appraised, and could be automatically quantified using machine vision techniques. In general, the information\\u000a to extract from process images is not well defined and is

Carl Duchesne

215

Hyperspectral imaging for food processing automation  

Microsoft Academic Search

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

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

2002-01-01

216

Image Processing and the Performance Gap  

Microsoft Academic Search

\\u000a Automated image processing and analysis methods have brought new dimensions, literally and figuratively, to medical imaging.\\u000a A large array of tools for visualization, quantization, classification, and decision-making are available to aid clinicians\\u000a at all junctures: in real-time diagnosis and therapy, in planning, and in retrospective meta-analyses. Many of those tools,\\u000a however, are not in regular use by radiologists. This chapter

Steven C. Horii; Murray H. Loew

217

Reconnaissance system performance, prediction through image processing  

NASA Astrophysics Data System (ADS)

After establishing a working-base image of given pixel-resolution and digitization, in conjunction with a calibration transform, the present method for image-processing based reconnaissance system performance evaluation gives attention to scaling, atmospheric, and MTF factors. The 'kernel spread-point definition', which is a weighted map of the redistribution of energy from a point object, is used to emulate lens-diffraction limitations, linear image motion, and simusoidal or random vibration. Recognition and identification criteria can be evaluated by simply looking at targets.

Conrad, Gary

1990-11-01

218

A 3D image processing method for manufacturing process automation  

Microsoft Academic Search

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

Dongming Zhao; Songtao Li

2005-01-01

219

Image processing applications for geologic mapping  

SciTech Connect

The use of satellite data, particularly Landsat images, for geologic mapping provides the geologist with a powerful tool. The digital format of these data permits applications of image processing to extract or enhance information useful for mapping purposes. Examples are presented of lithologic classification using texture measures, automatic lineament detection and structural analysis, and use of registered multisource satellite data. In each case, the additional mapping information provided relative to the particular treatment is evaluated. The goal is to provide the geologist with a range of processing techniques adapted to specific mapping problems.

Abrams, M.; Blusson, A.; Carrere, V.; Nguyen, T.; Rabu, Y.

1985-03-01

220

Factors Related to Integration of Technology Into the Teaching\\/learning Process in Agriscience Education Programs  

Microsoft Academic Search

This study addressed how technology was being integrated in the teaching\\/learning process in secondary agriscience education programs at four levels: Exploration, Experimentation, Adoption, and Advanced Integration. The study was based on the Kotrlik\\/Redmann Technology Integration Model©. Technology is being integrated by agriscience teachers in the teaching\\/learning process to a moderate extent. They are more active in the areas of exploration

Joe W. Kotrlik; Donna H. Redmann; Bruce B. Douglas

221

3D integral imaging with optical processing  

NASA Astrophysics Data System (ADS)

Integral imaging (InI) systems are imaging devices that provide auto-stereoscopic images of 3D intensity objects. Since the birth of this new technology, InI systems have faced satisfactorily many of their initial drawbacks. Basically, two kind of procedures have been used: digital and optical procedures. The "3D Imaging and Display Group" at the University of Valencia, with the essential collaboration of Prof. Javidi, has centered its efforts in the 3D InI with optical processing. Among other achievements, our Group has proposed the annular amplitude modulation for enlargement of the depth of field, dynamic focusing for reduction of the facet-braiding effect, or the TRES and MATRES devices to enlarge the viewing angle.

Martínez-Corral, Manuel; Martínez-Cuenca, Raúl; Saavedra, Genaro; Javidi, Bahram

2008-05-01

222

Image processing in swallowing and speech research.  

PubMed

An image processing system for application to studies of the temporal and spatial parameters of movement during swallowing and speech is described. Image sequences from videotape are digitized for computerized manipulation and analysis in an attempt to improve on conventional visual inspection. The system is "interactive" or "event-driven": after executing a function, the computer waits for guidance from the user who controls the program through keyboard and mouse input, selecting options from menus and responding to prompts. The analyst alters image clarity by the application of filters and heightens contrast through video enhancement. A technique called "remapping" reduces head motion and provides uniform spatial scaling. Animated sequences of images are used, as opposed to frame-by-frame analysis, to preserve temporal context and increase efficiency of measurement. Low cost off-the-shelf personal computer hardware is used along with original software tailored to the application. PMID:1884636

Dengel, G; Robbins, J; Rosenbek, J C

1991-01-01

223

Image Processing Framework for Virtual Colonoscopy  

Microsoft Academic Search

\\u000a This paper describes a complete image processing framework for Virtual Colonscopy. The developed algorithms cover the entire\\u000a process that allows a virtual navigation inside the colon lumen, starting from a dataset of axial CT slices. The implemented\\u000a modules are: electronic colon cleansing, lumen segmentation, skeletonization, rendering and navigation. In particular for\\u000a the centerline problem two different techniques are proposed and

Vitoantonio Bevilacqua; Marco Cortellino; Michele Piccinni; Antonio Scarpa; Diego Taurino; Giuseppe Mastronardi; Marco Moschetta; Giuseppe Angelelli

2009-01-01

224

Imaging college educators (abstract only)  

Microsoft Academic Search

Within computing, the imaging field includes computer vision, image understanding, and image processing. While much research and teaching is done at the graduate level, the typical imaging educator at an undergraduate institution is the only specialist in his or her department. This BOF brings together educators who currently teach imaging courses or may be interested in expanding curricular offerings. We

Jerod Weinman; Ellen Walker

2012-01-01

225

Using ICT for Quality in Teaching Learning Evaluation Processes  

Microsoft Academic Search

ICT does not automatically add quality. There is however, growing evidence that ICT application to the core business of education can accelerate and improve learning on a number of fronts. It can also provide the means of gathering, connecting and analysing data about teaching and learning in ways that enable us to more accurately diagnose student need and evaluate programs.

226

Teaching the Process of Science in Geography Courses  

Microsoft Academic Search

There is a need for more effective methods for teaching the nature of scientific inquiry in geography classes. We suggest class projects that involve applying the scientific method from experimental design, to data identification and collection, to analysis, and finally to writing up the results. Our example project for college students is a test of a hypothesis dealing with the

Jeffrey A. Lee; Linda Lea Jones

1993-01-01

227

The Teaching\\/Learning Process in Analytical Chemistry  

Microsoft Academic Search

Before teaching a course, the instructor must identify what she or he intends for the students to learn. For most analytical chemistry instructors, this usually involves an assessment of what methods and techniques to include and at what depth to cover them. There are many other skills, though, that will be important to students for their future success. Most college

Thomas J. Wenzel

2003-01-01

228

The Teaching Evaluation Process: Segmentation of Marketing Students.  

ERIC Educational Resources Information Center

|A study applied the concept of market segmentation to student evaluation of college teaching, by assessing whether there exist several segments of students and how this relates to their evaluation of faculty. Subjects were 156 Australian undergraduate business administration students. Results suggest segments do exist, with different expectations…

Yau, Oliver H. M.; Kwan, Wayne

1993-01-01

229

Teaching choreography in higher education: a process continuum model  

Microsoft Academic Search

This study proposes a new paradigm for the learning and teaching of choreography in the tertiary sector. It is based on the rationale that the choreography curriculum for the twenty?first century should be broad and balanced, and that tertiary students will benefit from a range of skills, knowledge and understanding germane to possible future career prospects in a changing and

Jo Butterworth

2004-01-01

230

EFL Teaching in Brazil: Emphasizing Conditions, Processes, or Product?  

ERIC Educational Resources Information Center

|To investigate teaching practices for English as a foreign/second language (EFL) at the university level in Brazil, three researchers analyzed the research presented at the 1990 Brazilian National Conference of EFL University Teachers (ENPULI Conference). Focus of the analysis was on the main objective of the study and the emphasis placed on…

Motta-Roth, Desiree; And Others

231

How Teaching Writing Can Affect Our Own Writing Process.  

ERIC Educational Resources Information Center

|One teacher's experience with changes in writing skills and attitudes while teaching writing led to studies of the experiences of three female graduate student writing tutors with widely varying backgrounds working in a university tutorial service. One was a student from a blue collar family who had entered college as a mature student; one had…

Miller, Toni

232

Recent Advances in Remote Sensing Image Processing  

Microsoft Academic Search

Remote sensing image processing is nowadays a mature re- search area. The techniques developed in the field allow many real-life applications with great societal value. For inst ance, urban monitoring, fire detection or flood prediction can have a great impact on economical and environmental issues. To at- tain such objectives, the remote sensing community has turned into a multidisciplinary field

Devis Tuia; Gustavo Camps-Valls

2009-01-01

233

Center for Image Processing in Education  

NSDL National Science Digital Library

The Center for Image Processing in Education (CIPE) was a not-for-profit organization that promoted computer-aided visualization as a tool for inquiry-based learning. The CIPE materials are now held by Science Approach. These web pages provide descriptions of the CIPE projects, and links to resources where appropriate.

Education, Center F.

2005-01-04

234

Image Processing with Pulse Coupled Neural Networks  

Microsoft Academic Search

The Pulse Coupled Neural Network {(PCNN)} differs from conventional Artificial Neural Networks by having time dependent output and not requiring training (supervised or unsupervised). The basic {PCNN} algorithm consists of five coupled equations, one of which is non-linear. In an image processing application, the {PCNN} output takes the form of a series of pulses that are a function of the

M. P. Schamschula; R. Inguva; J. L. Johnson

2000-01-01

235

INVESTIGATIVE IMAGE PROCESSING: THE WACO INVESTIGATION  

Microsoft Academic Search

This paper presents some of the the image processing tech- niques that were applied to seek an answer to the ques- tion whether agents of the Federal Bureau of Investigation (FBI) were shooting at Branch Davidian sect members in the tragic event in Waco, Texas, U.S., 1993. The \\

Lena Klasén

2001-01-01

236

Cubic convolution interpolation for digital image processing  

Microsoft Academic Search

Cubic convolution interpolation is a new technique for resampling discrete data. It has a number of desirable features which make it useful for image processing. The technique can be performed efficiently on a digital computer. The cubic convolution interpolation function converges uniformly to the function being interpolated as the sampling increment approaches zero. With the appropriate boundary conditions and constraints

ROBERT G. KEYS

1981-01-01

237

Spectral image processing in real-time  

Microsoft Academic Search

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

Matthias F. Carlsohn

2006-01-01

238

Pattern Recognition and Image Processing of Infrared Astronomical Satellite Images  

NASA Astrophysics Data System (ADS)

The Infrared Astronomical Satellite (IRAS) images with wavelengths of 60 mu m and 100 mu m contain mainly information on both extra-galactic sources and low-temperature interstellar media. The low-temperature interstellar media in the Milky Way impose a "cirrus" screen of IRAS images, especially in images with 100 mu m wavelength. This dissertation deals with the techniques of removing the "cirrus" clouds from the 100 mu m band in order to achieve accurate determinations of point sources and their intensities (fluxes). We employ an image filtering process which utilizes mathematical morphology and wavelet analysis as the key tools in removing the "cirrus" foreground emission. The filtering process consists of extraction and classification of the size information, and then using the classification results in removal of the cirrus component from each pixel of the image. Extraction of size information is the most important step in this process. It is achieved by either mathematical morphology or wavelet analysis. In the mathematical morphological method, extraction of size information is done using the "sieving" process. In the wavelet method, multi-resolution techniques are employed instead. The classification of size information distinguishes extra-galactic sources from cirrus using their averaged size information. The cirrus component for each pixel is then removed by using the averaged cirrus size information. The filtered image contains much less cirrus. Intensity alteration for extra-galactic sources in the filtered image are discussed. It is possible to retain the fluxes of the point sources when we weigh the cirrus component differently pixel by pixel. The importance of the uni-directional size information extractions are addressed in this dissertation. Such uni-directional extractions are achieved by constraining the structuring elements, or by constraining the sieving process to be sequential. The generalizations of mathematical morphology operations based on the dynamic hit-or-miss transform are presented in this dissertation. The generalized erosion (gamma-erosion) bridges traditional erosion and dilation. It also enriches the morphological operators available in the field of signal and image processing. Traditional closing is generalized into gamma -closing, which bridges traditional closing and opening. Properties of gamma-erosion and gamma -closing are discussed. The sieving process is generalized based on gamma-closing, and is bi-directional, with the polarity directly related to the parameter gamma. The size information extractors of morphological methods and wavelet methods are justified quantitatively using a prototype peak with fixed slope. The non-linearity of the sieving process is analyzed. It is shown that the sieving process can approach an approximate linearity at positions where the input signal has sharp peaks (i.e., the slopes are large). The spatial discriminating properties of the size information extractors are also very important.

He, Lun Xiong

1996-01-01

239

Images and the History Lecture: Teaching the History Channel Generation  

ERIC Educational Resources Information Center

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…

Coohill, Joseph

2006-01-01

240

Report on using TIPS (Teaching Information Processing System) in teaching physics and astronomy  

NSDL National Science Digital Library

A computer-managed instruction system, TIPS, has been used for over a decade in the teaching of diverse disciplines. This paper describes the recent use of TIPS in physics and astronomy courses at Kansas State University, Memphis State University, University of New Mexico, and University of WisconsinâGreen Bay. Student reactions to TIPS were largely positive, but the degree of success in improving student performance reported in many articles has not been observed.

Folland, Nathan; Marchini, Robert R.; Rhyner, Charles R.; Zeilik, Michael

2005-10-21

241

Seeing oneself as a teacher: A study of the development of teaching images in a teacher education program  

Microsoft Academic Search

This hypothesis-generating study describes the knowledge or beliefs about learning and teaching verbalized by graduate or undergraduate teacher candidates as they participated in teacher education programs for secondary school teachers. Research focused on two major questions: (a) What knowledge and beliefs about learning and teaching are revealed in the images verbalized (explicitly or implicitly) by teacher candidates? and (b) What

Dorothy Ann Feola

1996-01-01

242

NCEP Exercise- Introduction to Remote Sensing: Viewing satellite imagery with image processing software  

NSDL National Science Digital Library

This exercise acts as a self-guided tutorial that demonstrates how satellite imagery can be visualized using an open source remote sensing image processing software application called OpenEV. With this software it is possible to read a broad range of satellite imagery in a variety of file formats. Once the image files are input into the software, functions exist to allow the user to enhance the image and overlay other geographic data. Additional teaching materials on topics relating to biodiversity conservation and ecology can be obtained free of charge by registering at the Network for Conservation Educators and PractitionersÃÂ website (http://ncep.amnh.org).

Horning, N.

2010-02-16

243

Concrete teaching: hooks and props as instructional technology  

Microsoft Academic Search

Hooks and props are mental or physical images used in the classroom which help students as they learn new topics. Concrete and constructive teaching are essential in introductory programming courses. In this paper we discuss active teaching and some ideas using physical props and images that in our experience have enhanced the teaching and learning process.

Owen L. Astrachan

1998-01-01

244

Remote online processing of multispectral image data  

NASA Astrophysics Data System (ADS)

Within the scope of this paper a both compact and economical data acquisition system for multispecral images is described. It consists of a CCD camera, a liquid crystal tunable filter in combination with an associated concept for data processing. Despite of their limited functionality (e.g.regarding calibration) in comparison with commercial systems such as AVIRIS the use of these upcoming compact multispectral camera systems can be advantageous in many applications. Additional benefit can be derived adding online data processing. In order to maintain the systems low weight and price this work proposes to separate data acquisition and processing modules, and transmit pre-processed camera data online to a stationary high performance computer for further processing. The inevitable data transmission has to be optimised because of bandwidth limitations. All mentioned considerations hold especially for applications involving mini-unmanned-aerial-vehicles (mini-UAVs). Due to their limited internal payload the use of a lightweight, compact camera system is of particular importance. This work emphasises on the optimal software interface in between pre-processed data (from the camera system), transmitted data (regarding small bandwidth) and post-processed data (based on high performance computer). Discussed parameters are pre-processing algorithms, channel bandwidth, and resulting accuracy in the classification of multispectral image data. The benchmarked pre-processing algorithms include diagnostic statistics, test of internal determination coefficients as well as loss-free and lossy data compression methods. The resulting classification precision is computed in comparison to a classification performed with the original image dataset.

Groh, Christine; Rothe, Hendrik

2005-10-01

245

Teaching sensor technology and MEMS processing using an in-house educational MPW process  

NASA Astrophysics Data System (ADS)

This paper presents a new innovative way of teaching modern sensor technology and practical MEMS-processing by using an in-house Multi Project Wafer (MPW) process especially developed for education purposes. This process has been used as the base for a project course called Sensor Technology, which includes a substantial laboratory component. In this project, the student actively follows the complete sensor development process from design and fabrication to the evaluation of modern MEMS sensors. The design and CAD work for five different sensor types (each having several different versions) has completed prior to the course but the students are introduced to the tools used for the design and simulation of microstructures. The students themselves perform most of the fabrication steps in the cleanroom and all evaluation of the fabricated sensors. Our new in-house MPW-process allows the students to fabricate five different piezoresistive sensor types for measuring flow (both mechanical and thermal transducers), acceleration (both 1- and 3-axis), pressure and angular velocity using one mask set consisting of only four masks. Each sensor type then is produced in many different versions (size and geometry) giving the students flexibility to choose sensors for specific applications during the sensor evaluation. Successful evaluations of pressure, flow and acceleration sensors fabricated by the students have been carried out. The sensor evaluation part also gives the student experience in practical electrical measurements on real devices. Both the course concept and the unique educational MPW-process will be described in this paper.

Ebefors, Thorbjoern; Kaelvesten, Edvard

1999-09-01

246

Comparative Study of Automatic Acquisition Methods of Image Processing Procedures  

Microsoft Academic Search

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

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

2000-01-01

247

Measurement of the Teaching Process in Educational and Treatment Programs for Exceptional Youth.  

ERIC Educational Resources Information Center

The rationale for process measurement in programs for behavior disordered students is presented, followed by a description of a matrix to conceptualize process evaluation methodologies. Examples are presented for each matrix cell to illustrate types of data that can be used to evaluate the teaching process. (CL)

Gable, Robert; Trout, Barbara

1985-01-01

248

Processing Photometric Full-Disk Solar Images  

NASA Astrophysics Data System (ADS)

The Cartesian Full Disk Telescopes (CFDTs) at the San Fernando Observatory (SFO) produce daily full-disk digital solar images using a linear Reticon diode array scanned by the Earth's rotation. In this paper, we describe in some detail the data processing techniques used to extract photometric information from CFDT images. We believe our experience in this field will be found useful by other workers as more instruments are built and operated with similar scientific goals to the CFDT. We describe: 1. our photometric calibration techniques and accuracy; 2. the method we use to identify the position of the limb; 3. production of a contrast map from the image, including finding a mean limb darkening curve; 4. identification of solar features. Preprints of a paper giving all algorithms in detail will be available at the meeting. This research has been supported by NASA grant NAGW-3017 and NSF grant ATM-9504374.

Walton, S. R.; Chapman, G. A.; Cookson, A. M.; Dobias, J. J.; Preminger, D. G.

1997-05-01

249

Advances in iterative multigrid PIV image processing  

NASA Astrophysics Data System (ADS)

An image-processing technique is proposed, which performs iterative interrogation of particle image velocimetry (PIV) recordings. The method is based on cross-correlation, enhancing the matching performances by means of a relative transformation between the interrogation areas. On the basis of an iterative prediction of the tracers motion, window offset and deformation are applied, accounting for the local deformation of the fluid continuum. In addition, progressive grid refinement is applied in order to maximise the spatial resolution. The performances of the method are analysed and compared with the conventional cross correlation with and without the effect of a window discrete offset. The assessment of performance through synthetic PIV images shows that a remarkable improvement can be obtained in terms of precision and dynamic range. Moreover, peak-locking effects do not affect the method in practice. The velocity gradient range accessed with the application of a relative window deformation (linear approximation) is significantly enlarged, as confirmed in the experimental results.

Scarano, F.; Riethmuller, M. L.

2000-12-01

250

Advances in iterative multigrid PIV image processing  

NASA Astrophysics Data System (ADS)

An image-processing technique is proposed, which performs iterative interrogation of particle image velocimetry (PIV) recordings. The method is based on cross-correlation, enhancing the matching performances by means of a relative transformation between the interrogation areas. On the basis of an iterative prediction of the tracers motion, window offset and deformation are applied, accounting for the local deformation of the fluid continuum. In addition, progressive grid refinement is applied in order to maximise the spatial resolution. The performances of the method are analysed and compared with the conventional cross correlation with and without the effect of a window discrete offset. The assessment of performance through synthetic PIV images shows that a remarkable improvement can be obtained in terms of precision and dynamic range. Moreover, peak-locking effects do not affect the method in practice. The velocity gradient range accessed with the application of a relative window deformation (linear approximation) is significantly enlarged, as confirmed in the experimental results.

Scarano, F.; Riethmuller, M. L.

251

Teaching NeuroImages: Polymyalgia rheumatica and giant cell arteritis.  

PubMed

A 62-year-old woman presented with 4 months of neck, shoulder, and hip pain, morning stiffness, and elevated inflammatory markers compatible with polymyalgia rheumatica (PMR). Cervical spine imaging demonstrated ill-defined enhancement in posterior neck soft tissues (figure 1), consistent with interspinous bursitis.(1) She reported right-sided headache. Brain magnetic resonance angiography demonstrated narrowing of the anterior branch of the right superficial temporal artery (STA; figure 2). Right STA biopsy showed giant cell arteritis. Giant cell arteritis occurs in 16% to 21% of patients with PMR.(2) Color Doppler ultrasound of the left STA obtained while on prednisone showed a hypoechoic halo (figure 3).(3.) PMID:24042579

Ginat, Daniel Thomas; Rastalsky, Naina

2013-09-17

252

Preservice teachers: Process skill entry behaviour and opinions about teaching primary science  

Microsoft Academic Search

Conclusions  This group of preservice teachers entered their education programme with conceptions about teaching primary science which\\u000a are biased towards science content and preparation for secondary science. However, although process skills are not mentioned\\u000a specifically by the vast majority of students, about a third of the intake considered “problem solving\\/discovering” things\\u000a to be a purpose for teaching primary science. There would

Keith Skamp

1987-01-01

253

Development of image processing software for quantitative analysis of bioluminescence image  

Microsoft Academic Search

Molecular imaging is leading an important role in the era of molecular medicine. Optical imaging, a rising star in the filed of molecular imaging, largely consists of fluorescent imaging and bioluminescent imaging. Molecular imaging analysis will allow us to observe the incipience and progression of the disease. In this paper, we suggest image processing methods and develop software for bioluminescence

Hye-Jin Jeong; Tae-Yun Kim; Hae-Gil Hwang; Hyun-Ju Choi; Byeong-Il Lee; Jung-Joon Min; Heung-Kook Choi

2006-01-01

254

Contented-Based Satellite Cloud Image Processing and Information Retrieval  

Microsoft Academic Search

Satellite cloud image is a kind of useful image which includes abundant information, for acquired this information, the image\\u000a processing and character extraction method adapt to satellite cloud image has to be used. Content-based satellite cloud image\\u000a processing and information retrieval (CBIPIR) is a very important problem in image processing and analysis field. The basic\\u000a character, like color, texture, edge

Yanling Hao; Wei Shangguan; Yi Zhu; Yanhong Tang

2007-01-01

255

Images of Teaching and Proposals for Reform: A Comparison of Ideas from Cognitive and Organizational Research  

Microsoft Academic Search

Organizational analysis and studies of teacher thinking both contribute to discussion about how to professionalize teaching, but these two bodies of research have not been well synchronized. Teacher-thinking research examines teachers' thought processes and makes recommendations for training. Organizational analysis emphasizes the importance of teacher commitment and the redesign of existing schools to increase teacher collegiality and participation. This article

William A. Firestone

1996-01-01

256

A pathologist-designed imaging system for anatomic pathology signout, teaching, and research.  

PubMed

Pathology images are derived from gross surgical specimens, light microscopy, immunofluorescence, electron microscopy, molecular diagnostic gels, flow cytometry, image analysis data, and clinical laboratory data in graphic form. We have implemented a network of desktop personal computers (PCs) that allow us to easily capture, store, and retrieve gross and microscopic, anatomic, and research pathology images. System architecture involves multiple image acquisition and retrieval sites and a central file server for storage. The digitized images are conveyed via a local area network to and from image capture or display stations. Acquisition sites consist of a high-resolution camera connected to a frame grabber card in a 486-type personal computer, equipped with 16 MB (Table 1) RAM, a 1.05-gigabyte hard drive, and a 32-bit ethernet card for access to our anatomic pathology reporting system. We have designed a push-button workstation for acquiring and indexing images that does not significantly interfere with surgical pathology sign-out. Advantages of the system include the following: (1) Improving patient care: the availability of gross images at time of microscopic sign-out, verification of recurrence of malignancy from archived images, monitoring of bone marrow engraftment and immunosuppressive intervention after bone marrow/solid organ transplantation on repeat biopsies, and ability to seek instantaneous consultation with any pathologist on the network; (2) enhancing the teaching environment: building a digital surgical pathology atlas, improving the availability of images for conference support, and sharing cases across the network; (3) enhancing research: case study compilation, metastudy analysis, and availability of digitized images for quantitative analysis and permanent/reusable image records for archival study; and (4) other practical and economic considerations: storing case requisition images and hand-drawn diagrams deters the spread of gross room contaminants and results in considerable cost savings in photographic media for conferences, improved quality assurance by porting control stains across the network, and a multiplicity of other advantages that enhance image and information management in pathology. PMID:7878302

Schubert, E; Gross, W; Siderits, R H; Deckenbaugh, L; He, F; Becich, M J

1994-11-01

257

Image and Video Processing for Affective Applications  

Microsoft Academic Search

\\u000a Recent advances in the research area of affective computing have broadened the range of application areas of its findings,\\u000a and additionally, as the state of the art advances in affective computing, other related research areas (computer vision,\\u000a pattern recognition, etc.) discover new challenges that are related to image and video processing related to the task of automatic\\u000a affective analysis. Although

Maja Pantic; George Caridakis

258

A Representation for Mammographic Image Processing  

Microsoft Academic Search

We propose that mammographie image processing should be performed on what we term the h\\u000aint representation. h\\u000aint is the thickness of non-fat or interesting tissue between each pixel and the x-ray source. This representation allows simulation of any projective x-ray examination and we show simulations of the appearances of anatomical structures within the breast. We follow this with

Ralph Highnam; Michael Brady; Basil Shepstone

1995-01-01

259

CCD matrix arrays with interframe image processing  

Microsoft Academic Search

A special full frame CCD imager has been developed for high performance applications. The device A-1059 type consists of 256(H)* (2*144)V elements and is fabricated using a triple ply, p-channel CCD process. The pixel size is 18 micrometers *24 micrometers . The device A-1131 type consists of 230(H)* (3*144)V elements and is fabricated using a triple poly, buried n- channel

Alexander S. Skrylev

1999-01-01

260

Digital image processing for thermal observation system  

NASA Astrophysics Data System (ADS)

This paper describes the digital image processing techniques of a thermal observation system, which is a serial/parallel scan and standard TV display type using a SPRITE (Signal PRocessing In The Element) detector. The designed digital electronics has two major signal processing stages: a high speed digital scan converter and an autoregressive (AR) filter. The digital scan converter is designed with analog-to-digital converter (ADC) and dual port RAM that can carry out reading and writing simultaneously, thus enabling compact scan conversion. The scan converter reformats the five parallel analog signals generated from the detector elements into serial digital signals compatible with RS-170 video rate. For the improvement of signal-to- noise ratio and compensation for the gamma effect of the monitor, we have implemented a real time 1st order AR filter that adopts frame averaging method. With the look-up-table (LUT) ROM that contains the frame averaging factors and the gamma coefficients, this digital filter performs the noise reduction and the gamma correction at the same time. This digital image processor has been proven to provide excellent image quality and superior detection capability for distant targets at night time.

Yu, W. K.; Song, I. S.; Yoon, E. S.; Lee, Y. C.; Moon, M. G.; Hong, Seok M.; Kim, J. K.

1995-05-01

261

Vector processing enhancements for real-time image analysis.  

SciTech Connect

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.

Shoaf, S.; APS Engineering Support Division

2008-01-01

262

CCD matrix arrays with interframe image processing  

NASA Astrophysics Data System (ADS)

A special full frame CCD imager has been developed for high performance applications. The device A-1059 type consists of 256(H)* (2*144)V elements and is fabricated using a triple ply, p-channel CCD process. The pixel size is 18 micrometers *24 micrometers . The device A-1131 type consists of 230(H)* (3*144)V elements and is fabricated using a triple poly, buried n- channel CCD process. The pixel size is 24 micrometers *27 micrometers . Its antiblooming efficiency is 500 saturation exposure.

Skrylev, Alexander S.

1999-10-01

263

Fantasies and Other Romanticized Concepts of Music Teaching: a Cross-Cultural Study of Chinese and North American Music Education Students' Images of Music Teaching  

Microsoft Academic Search

Within an international context, this article reports on the use of drawings by Chinese and North American music education majors as a means of examining these students' images, expectations, and emerging concepts of music teaching. By studying and discussing these drawings within the methods class, it is hoped that these music education majors could project their present orientation toward music

Manny Brand; Lori Dolloff

2002-01-01

264

Development of the Instructional Model by Integrating Information Literacy in the Class Learning and Teaching Processes  

ERIC Educational Resources Information Center

|This study was aimed at developing an instructional model by integrating information literacy in the instructional process of general education courses at an undergraduate level. The research query, "What is the teaching methodology that integrates information literacy in the instructional process of general education courses at an undergraduate…

Maitaouthong, Therdsak; Tuamsuk, Kulthida; Techamanee, Yupin

2011-01-01

265

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

ERIC Educational Resources Information Center

|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…

Alutu, Azuka N. G.

2006-01-01

266

The Reflections of Layered Curriculum to Learning-Teaching Process in Social Studies Course  

ERIC Educational Resources Information Center

|The purpose of this research is to set the effect of Layered Curriculum on learning-teaching processes. The research was conducted on 2011-2012 educational year. The implementation process, which lasted for 4 weeks, was carried out with the theme named "The World of All of Us" in Social Studies lesson at 5th grade. Observation and interview…

Gun, Emine Seda

2013-01-01

267

Applying Experiential Learning in College Teaching and Assessment: A Process Model.  

ERIC Educational Resources Information Center

This manual presents a process model in which university teaching and assessment processes are embedded within a broader view of the human learning experience and the outcomes that are required for professional student growth. The model conceptualizes the university's role in the lives of life-long learners and provides a framework for rethinking…

Jackson, Lewis, Ed.; And Others

268

I Can See Clearly Now: The Kuona Process--A Teaching Strategy for Liberation.  

ERIC Educational Resources Information Center

Describes the kuona process of skill development, which teaches conceptualization from a cultural, political, spiritual, and liberating perspective (rooted in African culture) and fosters self reliance and self determination to promote social change in African Americans. Examines the process of conceptualization, the formation of the kuona…

Peavy, Liz

2000-01-01

269

Automatic processing method for astronomical CCD images  

NASA Astrophysics Data System (ADS)

Since several hundreds of CCD images are obtained with the CCD camera in the Lower Latitude Meridian Circle (LLMC) every observational night, it is essential to adopt an automatic processing method to find the initial position of each object in these images, to center the object detected and to calculate its magnitude. In this paper several existing automatic search algorithms searching for objects in astronomical CCD images are reviewed. Our automatic searching algorithm is described, which include 5 steps: background calculating, filtering, object detecting and identifying, and defect eliminating. Then several existing two-dimensional centering algorithms are also reviewed, and our modified two-dimensional moment algorithm and an empirical formula for the centering threshold are presented. An algorithm for determining the magnitudes of objects is also presented in the paper. All these algorithms are programmed with VC++ programming language. In the last our method is tested with CCD images from the 1m RCC telescope in Yunnan Observatory, and some primary results are also given.

Li, Binhua; Yang, Lei; Mao, Wei

2002-12-01

270

Local manipulation of image layers using standard image processing primitives  

Microsoft Academic Search

In any modern, standard image manipulation program, images are made up of multiple layers ordered on top of each other in a user defined sequence. A layer is a collection of graphical objects (like masks and image patches). Each layer can be edited separately and then all the layers are composited together to get the final image. In some images,

Niranjan Mujumdar; Sanju Maliakal; Sweta Malankar; Satish Kumar Chavan; Parag Chaudhuri

2010-01-01

271

A qualitative study of pre-service teachers using co-teaching as a method to understand scientific process skills to teach inquiry  

NASA Astrophysics Data System (ADS)

The National Science Education Standards (NSES) have established scientific literacy as a goal for all students. The goals advocate scientific inquiry as an instructional strategy to be used in the classroom, and standards of inquiry have even been established. At the same time, co-teaching has become prevalent in classroom as regular education teachers work with special education teachers. The classrooms are inclusive and both teachers are to work together to benefit all the students. Research has shown positive perceptions and negative perceptions of co-teaching. In this study, pre-service teachers are co-taught an elementary science methods course at a medium-sized university. They are co-taught the basic science process skills by two science education instructors. In turn, they teach lessons to the methods course with a co-teaching partner covering the basic science process skills. The pre-service teachers were studied to see how they developed an understanding of the process skills and of co-teaching. The results showed how the pre-service teachers learned the process skills and how they learned about co-teaching. The co-teaching experience was particularly useful in that the pre-service teachers expressed the roles that co-teachers assume when they are in the classroom. This study shows that pre-service teachers should be made aware of co-teaching at the preparatory level and be able to practice co-teaching before being expected to know how to co-teach when they reach a classroom of their own.

McCain, Jennifer Carter

272

Image processing and the Arithmetic Fourier Transform  

SciTech Connect

A new Fourier technique, the Arithmetic Fourier Transform (AFT) was recently developed for signal processing. This approach is based on the number-theoretic method of Mobius inversion. The AFT needs only additions except for a small amount of multiplications by prescribed scale factors. This new algorithm is also well suited to parallel processing. And there is no accumulation of rounding errors in the AFT algorithm. In this reprint, the AFT is used to compute the discrete cosine transform and is also extended to 2-D cases for image processing. A 2-D Mobius inversion formula is proved. It is then applied to the computation of Fourier coefficients of a periodic 2-D function. It is shown that the output of an array of delay-line (or transversal) filters is the Mobius transform of the input harmonic terms. The 2-D Fourier coefficients can therefore be obtained through Mobius inversion of the output of the filter array.

Tufts, D.W.; Fan, Z.; Cao, Z.

1989-01-01

273

Imaging spectrometer for process industry applications  

NASA Astrophysics Data System (ADS)

This paper presents an imaging spectrometer principle based on a novel prism-grating-prism (PGP) element as the dispersive component and advanced camera solutions for on-line applications. The PGP element uses a volume type holographic plane transmission grating made of dichromated gelatin (DCG). Currently, spectrographs have been realized for the 400 - 1050 nm region but the applicable spectral region of the PGP is 380 - 1800 nm. Spectral resolution is typically between 1.5 and 5 nm. The on-axis optical configuration and simple rugged tubular optomechanical construction of the spectrograph provide a good image quality and resistance to harsh environmental conditions. Spectrograph optics are designed to be interfaced to any standard CCD camera. Special camera structures and operating modes can be used for applications requiring on-line data interpretation and process control.

Herrala, Esko; Okkonen, Jukka T.; Hyvarinen, Timo S.; Aikio, Mauri; Lammasniemi, Jorma

1994-11-01

274

New image processing challenges for jointly designed electro-optical imaging systems  

Microsoft Academic Search

Still-image processing algorithms are tailored to and depend crucially upon the properties of the class of images to which they are applied, for instance natural images in consumer digital cameras, medical images in fMRI machines, and binary text images in some photocopiers. We describe a new and possibly very important class of images and tasks for which traditional algorithms seem

M. Dirk Robinson; David G. Stork

2009-01-01

275

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

Microsoft Academic Search

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

Xinwen YU; Seishi Ninomiya; Matthew Laurenson; Zuorui Shen

2003-01-01

276

Optical processing of speckle images with bacteriorhodopsin for pattern recognition  

Microsoft Academic Search

Logarithmic processing of images with multiplicative noise characteristics can be utilized to transform an image into one with an additive noise distribution. This simplifies subsequent image processing steps for applications such as image restoration or correlation for pattern recognition. One particularly common form of multiplicative noise is speckle, for which the logarithmic operation not only produces additive noise, but also

John D. Downie

1995-01-01

277

Spatial frequency domain image processing for biometric recognition  

Microsoft Academic Search

Biometric recognition refers to the process of matching an input biometric to stored biometric information. In particular, biometric verification refers to matching the live biometric input from an individual to the stored biometric template about that individual. Examples of biometrics include face images, fingerprint images, iris images, retinal scans, etc. Thus, image processing techniques prove useful in the biometric recognition.

B. V. K. Vijaya Kumar; Chunyan Xie; Marios Savvides; Krithika Venkataramani

2002-01-01

278

Using NASA Space Imaging Technology to Teach Earth and Sun Topics  

NASA Astrophysics Data System (ADS)

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.

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

2011-12-01

279

IDAPS (Image Data Automated Processing System) System Description.  

National Technical Information Service (NTIS)

This document describes the physical configuration and components used in the image processing system referred to as IDAPS (Image Data Automated Processing System). This system was developed by the Environmental Research Institute of Michigan (ERIM) for E...

P. Kortesoja

1988-01-01

280

Performance evaluation of digital still camera image processing pipelines  

NASA Astrophysics Data System (ADS)

Although its lens and image sensor fundamentally limit a digital still camera's imaging performance, image processing can significantly improve the perceived quality of the output images. A well-designed processing pipeline achieves a good balance between the available processing power and the image yield (the fraction of images that meet a minimum quality criterion). This paper describes the use of subjective and objective measurements to establish a methodology for evaluating the image quality of processing pipelines. The test suite contains images both of analytical test targets for objective measurements, and of scenes for subjective evaluations that cover the photospace for the intended application. Objective image quality metrics correlating with perceived sharpness, noise, and color reproduction were used to evaluate the analytical images. An image quality model estimated the loss in image quality for each metric, and the individual metrics were combined to estimate the overall image quality. The model was trained with the subjective image quality data. The test images were processed through different pipelines, and the overall objective and subjective data was assessed to identify those image quality metrics that exhibit significant correlation with the perception of image quality. This methodology offers designers guidelines for effectively optimizing image quality.

Hertel, Dirk; Chang, Edward; Shih, Loren; Sproul, Jason

2007-01-01

281

Image processing and display in three dimensions  

NASA Astrophysics Data System (ADS)

The types of input data, the types and purpose of processing, and the classes of three-dimensional display are discussed, and some applied examples are considered. Candidates for a high through-put digital three-dimensional workstation include two-dimensional renditions based on shading and motion, true volumetric displays such as the holograph, simulated volumetric images using moving mirrors and reflective membranes, and stereoscopic displays. A 10 to the 9th bit/s refresh rate for an 8-bit 256-dynamic-range level 1000-by-1000-pixel display limits the scanned volumetric display to either very-slow-scan presentations or fast presentations using only a modest number of voxels. It is suggested that the best stereo performance will occur in the brightness range of 2-10 fL. Information extraction from the processed three-dimensional data ranges from the extremes of a fully visual mode to a fully automatic one.

Pischel, E. F.; Pearson, J. J.

1985-01-01

282

Multispectral image processing: the nature factor  

NASA Astrophysics Data System (ADS)

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.

Watkins, Wendell R.

1998-09-01

283

The color image processing technology of the milk somatic cells  

Microsoft Academic Search

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

Yuedong Wang; Heru Xue

2010-01-01

284

Comparison research on infrared thermal wave image sequence processing technology  

Microsoft Academic Search

The infrared thermal wave image processing technology is one of the new key technologies of nondestructive testing. The paper summarizes the typical infrared thermal wave sequences image processing algorithms, introduces the basic principle of each algorithm, and presents the experiments and three-dimensional visual display. The image processing results are quantitatively evaluated and compared by the rules such as Entropy, Spatial

Jianxiang Huang; Jinyu Zhang; Wei Zhang

2011-01-01

285

Radar image processing for the AFIT anechoic chamber  

NASA Astrophysics Data System (ADS)

The purpose of this study was to begin development of an Inverse Synthetic Aperature Radar imaging capability for the AFIT anechoic chamber. This began with an evaluation of the capabilities and limitations of the existing radar system and the chamber itself for this application. Then, after deciding on the image processing approach, software had to be written to collect the data necessary for image processing. This constituted the majority of this study, and resulted in a versatile, user-friendly program that automates the process of collecting data for high-resolution radar images. The program checks that the data to be collected will lead to a valid radar cross-section (RCS) image, but will allow data collection for general radar images. Finally, the image processing software was begun. This made use of commercially available software packages called PC-MATLAB and PRO-MATLAB. Further work is needed on the image processing software to generate calibrated images, and to perform focusing.

Sanders, Brian K.

1990-12-01

286

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.

287

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

ERIC Educational Resources Information Center

|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…

2000

288

TECHNOLOGY INTEGRATION BY AGRISCIENCE TEACHERS IN THE TEACHING\\/LEARNING PROCESS  

Microsoft Academic Search

The purpose of this study was to determine how technology was being integrated in the teaching\\/learning process in secondary agriscience education programs for four distinct and independent phases: Exploration, Experimentation, Adoption, and Advanced Integration. The study was based on the Kotrlik-Redmann Technology Integration Model©. The phases in which agriscience teachers are most active are exploration of the potential of using

Joe W. Kotrlik; Donna H. Redmann; Bruce B. Douglas

2003-01-01

289

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

ERIC Educational Resources Information Center

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…

2000

290

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

ERIC Educational Resources Information Center

|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…

Font, Vicenc; Bolite, Janete; Acevedo, Jorge

2010-01-01

291

Mathematics Teaching and Learning as a Mediating Process: The Case of Tape Diagrams  

Microsoft Academic Search

This article examines how visual representations may mediate the teaching and learning of mathematics over time in Japanese elementary classrooms. Using the Zone of Proximal Development Mathematical Learning Model (Murata & Fuson, 2006; Fuson & Murata, 2007), the process of mediation is explicated. The tape diagram, a central visual representation used in Japanese mathematics curriculum, is explored for its roles

Aki Murata

2008-01-01

292

Exploring the Process of Integrating the Internet into English Language Teaching  

ERIC Educational Resources Information Center

|The present paper explores the process of integrating the Internet into the field of English language teaching in the light of the following points: the general importance of the Internet in our everyday lives shedding some light on the increasing importance of the Internet as a new innovation in our modern life; benefits of using the Internet in…

Abdallah, Mahmoud Mohammad Sayed

2007-01-01

293

Understanding Reactions to Workplace Injustice Through Process Theories of Motivation: a Teaching Module and Simulation  

Microsoft Academic Search

Management and organizational behavior students are often overwhelmed by the plethora of motivation theories they must master at the undergraduate level. This article o fers a teaching module geared toward helping students understand how two major process theories of motivation, equity and expectancy theories and theories of organizational justice, are related and can be used to manage behavior in the

Mary D. Stecher; Joseph G. Rosse

2007-01-01

294

A Cognitive Processing Capacity Model of Teaching and Studying Applied to Biology.  

ERIC Educational Resources Information Center

The cognitive processing capacity (CPC) model of teaching and studying was used to determine whether tenth grade students could improve their performance in biology. The 27 students in the experimental class were taught to study information in quantities that matched their CPC and to chunk these quantities together under a heading in a study…

Furukawa, James M.; And Others

295

A Constraint Processing Approach to Assigning Graduate Teaching Assistants to Courses  

Microsoft Academic Search

In recent years, scheduling problems have been advantageously modeled as Constraint Satisfaction Problems (CSPs) and effectively solved by constraint propagation and processing techniques. In this document, we discuss one such application: the assignment of graduate teaching assistants (GTAs) to courses as instructors or grading assistants in a universit y setting. We analyze and model this problem in the real-world setting

Robert Glaubius

2001-01-01

296

Evaluation of Teaching and Learning Processes in a Computer-Supported Mechanical Engineering Course.  

ERIC Educational Resources Information Center

Evaluates the teaching and learning processes in a computer-supported first-year undergraduate course in the Department of Mechanical Engineering at the University of Surrey (England). Students saw the workshop delivery as being more interesting, effective, and efficient than lecture-based delivery; help from the tutor was seen as the most…

Brown, Alan

1995-01-01

297

Teacher Expectations: Modifying One's Teaching through the Self-Monitoring Process.  

ERIC Educational Resources Information Center

|A pilot study examined teacher expectations and how expectations are manifested in student participation in class discussions. Subjects, 10 third-grade student teachers, were observed as they led a discussion of a story following silent reading and participated in a self-monitoring process. Using a seating chart, the university student teaching

Blair, Timothy R.; Jones, Deneese L.

298

Optimizing the Teaching-Learning Process Through a Linear Programming Model--Stage Increment Model.  

ERIC Educational Resources Information Center

|An operations research method to optimize the teaching-learning process is introduced in this paper. In particular, a linear programing model is proposed which, unlike dynamic or control theory models, allows the computer to react to the responses of a learner in seconds or less. To satisfy the assumptions of linearity, the seemingly complicated…

Belgard, Maria R.; Min, Leo Yoon-Gee

299

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

ERIC Educational Resources Information Center

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…

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

2004-01-01

300

Teaching-Learning Process Factors Related to Pupil Achievement on a Psychomotor Task.  

ERIC Educational Resources Information Center

This study was designed to identify teaching-learning process behaviors that affect pupil achievement on a psychomotor task. Forty preservice physical education teachers each taught a twenty-minute cartwheel lesson to three elementary school pupils. Students' cartwheels were filmed before and after the instructional sessions, and analyzed for body…

Yerg, Beverly J.

301

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

ERIC Educational Resources Information Center

|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…

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

2004-01-01

302

From craft to science : Teaching models and learning processes in entrepreneurship education  

Microsoft Academic Search

Purpose – The aim of this article is to offer a conceptual framework in entrepreneurship education largely inspired by education sciences and discuss its two main levels, the ontological and educational levels. This framework is then used to discuss various types of entrepreneurship teaching programs, focusing on three broad categories of learning processes. Design\\/methodology\\/appraoch – This article uses intensive reviews

Alain Fayolle; Benoit Gailly

2008-01-01

303

Role of Interactive Media in teaching learning process at higher education  

Microsoft Academic Search

The purpose of present study was to assess the role of interactive media in teaching learning process at higher education level. The study was descriptive in nature and therefore survey method was selected for the collection of data. To achieve the purpose a questionnaire of 35 questions for 200 students and 10 teachers of Virtual University of Pakistan was constructed.

Abid H Shahzad; Adnan Khan

2009-01-01

304

Strategies for Teaching Writing to Primary Students Using the Writing Process.  

ERIC Educational Resources Information Center

|The challenge of effective writing instruction was investigated by means of a literature review. Writing, as a part of the field of Language Arts, comprising reading, writing, listening and speaking, takes more than teaching spelling, grammar, and other writing conventions for students to develop as writers. The writing process--prewriting,…

Reimer, Casey Nicolle

305

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

Microsoft Academic Search

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

S. Hansen; C. Byrge

306

Teaching Writing Using the Process-Oriented Approach.  

ERIC Educational Resources Information Center

|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…

Westervelt, Lisa

307

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

Microsoft Academic Search

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

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

1996-01-01

308

Differential coding and processing of images  

NASA Astrophysics Data System (ADS)

Different coding allows for the representation of the signals in a digital form with small word length and at the same time it ensures a specified resolution. The use of differences and delta modulation (DM) for the economical representation and efficient processing of the images needs the development of the existing methods and the working out of simple and fast processing methods in real time. One of the perspective processing methods is the unclear extreme analysis (UEA). Methods of signal compression and reconstruction (in the real time mode) with the use of UEA and DM are simple, economical and fast. The dependence of degree compression and a specified accuracy of the signal reconstruction with the use of UEA, first and secondary 2-D differences, separately and together, are showed in the examples. The influence of the limits of unclearance for them is shown too. This type of compression and reconstruction can be realized with the help of economical and technological devices, especially with the homogeneous computing environments.

Pogribny, Wlodzimierz; Zielinski, Igor

1999-09-01

309

The infrared video image pseudocolor processing system  

NASA Astrophysics Data System (ADS)

The infrared video image pseudo-color processing system, emphasizing on the algorithm and its implementation for measured object"s 2D temperature distribution using pseudo-color technology, is introduced in the paper. The data of measured object"s thermal image is the objective presentation of its surface temperature distribution, but the color has a close relationship with people"s subjective cognition. The so-called pseudo-color technology cross the bridge between subjectivity and objectivity, and represents the measured object"s temperature distribution in reason and at first hand. The algorithm of pseudo-color is based on the distance of IHS space. Thereby the definition of pseudo-color visual resolution is put forward. Both the software (which realize the map from the sample data to the color space) and the hardware (which carry out the conversion from the color space to palette by HDL) co-operate. Therefore the two levels map which is logic map and physical map respectively is presented. The system has been used abroad in failure diagnose of electric power devices, fire protection for lifesaving and even SARS detection in CHINA lately.

Zhu, Yong; Zhang, JiangLing

2003-11-01

310

A Reflective Teaching-Learning Process to Enhance Personal Knowing.  

ERIC Educational Resources Information Center

Presents a process in which nursing graduate students describe their personal stories of time pressures, identify the common elements in their stories, and reflect on their inner voice, leading to recognition of personal knowing. (SK)

Smith, Mary Jane

2000-01-01

311

Image processing methods for identifying species of plants  

Microsoft Academic Search

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

Shulin Dave; Ken Runtz

1995-01-01

312

Evaluation of the visual performance of image processing pipes: information value of subjective image attributes  

NASA Astrophysics Data System (ADS)

Subjective image quality data for 9 image processing pipes and 8 image contents (taken with mobile phone camera, 72 natural scene test images altogether) from 14 test subjects were collected. A triplet comparison setup and a hybrid qualitative/quantitative methodology were applied. MOS data and spontaneous, subjective image quality attributes to each test image were recorded. The use of positive and negative image quality attributes by the experimental subjects suggested a significant difference between the subjective spaces of low and high image quality. The robustness of the attribute data was shown by correlating DMOS data of the test images against their corresponding, average subjective attribute vector length data. The findings demonstrate the information value of spontaneous, subjective image quality attributes in evaluating image quality at variable quality levels. We discuss the implications of these findings for the development of sensitive performance measures and methods in profiling image processing systems and their components, especially at high image quality levels.

Nyman, G.; Häkkinen, J.; Koivisto, E.-M.; Leisti, T.; Lindroos, P.; Orenius, O.; Virtanen, T.; Vuori, T.

2010-01-01

313

IPL Processing of the Viking Orbiter Images of Mars  

Microsoft Academic Search

The Viking orbiter cameras returned over 9000 images of Mars during the 6-month nominal mission. Digital image processing was required to produce products suitable for quantitative and qualitative scientific interpretation. Processing included the production of surface elevation data using computer stereophotogrammetric techniques, crater classification based on geomorphological characteristics, and the generation of color products using multiple black-and-white images recorded through

Reuben M. Ruiz; Denis A. Elliott; Gary M. Yagi; Richard B. Pomphrey; Margaret A. Power; K. Winslow Farrell; Jean J. Lorre; William D. Benton; Robert E. Dewar; Louise E. Cullen

1977-01-01

314

IPL processing of the Viking orbiter images of Mars  

Microsoft Academic Search

The Viking orbiter cameras returned over 9000 images of Mars during the 6-month nominal mission. Digital image processing was required to produce products suitable for quantitative and qualitative scientific interpretation. Processing included the production of surface elevation data using computer stereophotogrammetric techniques, crater classification based on geomorphological characteristics, and the generation of color products using multiple black-and-white images recorded through

R. M. Ruiz; D. A. Elliott; G. M. Yagi; R. B. Pomphrey; M. A. Power; W. Farrell Jr.; J. J. Lorre; W. D. Benton; R. E. Dewar; L. E. Cullen

1977-01-01

315

Cognitive processing for image registration in formation flying  

Microsoft Academic Search

This paper explores the cognitive domains of information, knowledge and intelligence for signal processing. Since the initial cognitive efforts into the field of multi-agent cooperation, research has begun to polarize in several different types of cooperation. The nature of image registration implies information processing that is cognitive in classifying sensory image data. Key functionality presented in this image registration flight

R. L. Ewing; G. B. Lamont; B. A. Kadrovach; M. D. Eyster; M. L. Talbert

2009-01-01

316

Application of near-infrared image processing in agricultural engineering  

Microsoft Academic Search

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

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

2009-01-01

317

Image processing on ECG chart for ECG signal recovery  

Microsoft Academic Search

Medical imaging plays an indispensable role on medical informatics. Most of imaging processing technologies is focused on the identification of the locations of diseases on MRI, CT, PET, and SPECT images. However, only a few researches focused on one dimension signal recovery or reconstruction of electronic signals. Spatial and frequency methods were provided to process on colour or gray-level electrocardiogram

T. W. Shen; T. F. Laio

2009-01-01

318

An Image Processing Based Technique for Reading EAN-13 Barcodes  

Microsoft Academic Search

This paper addresses an image processing based technique for reading EAN-13 barcodes. This type of barcode is used worldwide for marking retail goods. The proposed technique uses a digital camera to acquire an image of the barcode, it then uses an image processing algorithm to locate and subsequently decode the barcode. Such an approach will enable electronic devices with cameras

Douglas Chai

2005-01-01

319

Zoom optics design and optimization with digital image process  

NASA Astrophysics Data System (ADS)

This research proposes a new method of optical system optimization for both optics and image processing, as a route to achieving best performance. Traditionally, optics is optimized independently without taking account of image processing. In this research, optimization work will be further studied with the concept of digital image processing (DIP), point spread function (PSF) and modulation transfer function (MTF), in order to reduce the size of miniature zoom lenses without sacrificing image quality. Experimental results show that optimization taking account of image processing yields much better performance than optimization which ignores it. From another point of view, it is concluded that equivalent performance may be achieved in the following two cases: one is having a poor lens with optimization work combined with image processing; the other is good optics without optimization work combined with image processing.

Tsai, Chen-Mu; Fang, Yi Chin; Lin, Yu-Cheng

2008-08-01

320

Preparing Teachers to Teach Science: Learning Science as a Process.  

ERIC Educational Resources Information Center

Cites the lack of students' understanding and practicing of science processes as evidenced in science fair projects. Major contributors to the decline in science achievement are discussed. Author suggests teachers need experience with "sciencing" in the form of original investigative projects. Coursework designed to meet this goal is described.…

Cornell, Elizabeth A.

1985-01-01

321

Teaching computer science using visualization of the evaluation process  

Microsoft Academic Search

In this paper, a new methodology of training of the software testers is offered. The methodology is based on the modified method of expert evaluations. Control quality charts are used for processing and visualization of results. Features of expert testing during training and revealing of distinctions are considered. Advantages of the developed methodology are shown on example.

Oleg V. Stukach

2008-01-01

322

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

ERIC Educational Resources Information Center

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…

Souchek, Russell; Meier, Marjorie

1997-01-01

323

Teaching Undergraduates the Process of Peer Review: Learning by Doing  

ERIC Educational Resources Information Center

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…

Rangachari, P. K.

2010-01-01

324

Teaching about Due Process of Law. ERIC Digest.  

ERIC Educational Resources Information Center

|Fundamental constitutional and legal principles are central to effective instruction in the K-12 social studies curriculum. To become competent citizens, students need to develop an understanding of the principles on which their society and government are based. Few principles are as important in the social studies curriculum as due process of…

Vontz, Thomas S.

325

Cognitive Styles and Sex Roles in Teaching-Learning Processes.  

ERIC Educational Resources Information Center

|Cognitive style models describe individual differences in information-processing, or methods for deriving meaning from the world. Each style is theoretically value-free; each is valid and has strengths or weaknesses depending upon its context. However, this value freedom has been threatened in two ways. First, while cognitive style has been…

Nelson, Karen H.

326

Teaching MBA Statistics Online: A Pedagogically Sound Process Approach  

ERIC Educational Resources Information Center

|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…

Grandzol, John R.

2004-01-01

327

Teaching MBA Statistics Online: A Pedagogically Sound Process Approach  

Microsoft Academic Search

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 learnng outcomes, and faculty availability and technological expertise. In this article, the author suggests a process model that develops key learning strategies for the online environment and offers accreditation- and literature-based guidelines for

John R. Grandzol

2004-01-01

328

Image and Signal Processing LISP Environment (ISLE)  

SciTech Connect

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.

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

1987-10-02

329

75 FR 38118 - In the Matter of Certain Electronic Devices With Image Processing Systems, Components Thereof...  

Federal Register 2010, 2011, 2012, 2013

...Certain Electronic Devices With Image Processing Systems, Components Thereof...certain electronic devices with image processing systems, components thereof...certain electronic devices with image processing systems, components...

2010-07-01

330

Optimizing the performance of wavelet coders by image processing  

NASA Astrophysics Data System (ADS)

Pre-processing images prior to encoding can remove noise, or unimportant detail, and thus improve the overall performance of the coder. Typical objective image quality metrics are obtained by computing a single or several numbers as a function of the difference image between the original and coded images. Such metrics may ont reflect the improvement in performance. In a recent paper we have presented a methodology that allows the quantitative determination of image quality when the image has been processed prior to encoding. We now present an extension of the work showing global objective quality measures that quantify the value of pre-processing for image coding using a wavelet coder. Because many options are available in wavelet coder design, we limit our study to a 'best' coder obtained in previous work, and determine what further performance improvement can be achieved by image processing.

Algazi, V. Ralph; Avadhanam, Niranjan; Estes, Robert R.

1997-10-01

331

Viewpoints on Medical Image Processing: From Science to Application  

PubMed Central

Medical image processing provides core innovation for medical imaging. This paper is focused on recent developments from science to applications analyzing the past fifteen years of history of the proceedings of the German annual meeting on medical image processing (BVM). Furthermore, some members of the program committee present their personal points of views: (i) multi-modality for imaging and diagnosis, (ii) analysis of diffusion-weighted imaging, (iii) model-based image analysis, (iv) registration of section images, (v) from images to information in digital endoscopy, and (vi) virtual reality and robotics. Medical imaging and medical image computing is seen as field of rapid development with clear trends to integrated applications in diagnostics, treatment planning and treatment.

Deserno (ne Lehmann), Thomas M.; Handels, Heinz; Maier-Hein (ne Fritzsche), Klaus H.; Mersmann, Sven; Palm, Christoph; Tolxdorff, Thomas; Wagenknecht, Gudrun; Wittenberg, Thomas

2013-01-01

332

Teaching a process model of legal argument with hypotheticals  

Microsoft Academic Search

The research described here explores the idea of using Supreme Court oral arguments as pedagogical examples in first year\\u000a classes to help students learn the role of hypothetical reasoning in law. The article presents examples of patterns of reasoning\\u000a with hypotheticals in appellate legal argument and in the legal classroom and a process model of hypothetical reasoning that\\u000a relates them

Kevin D. Ashley

2009-01-01

333

The processing loads of young children's and teachers' representations of place value and implications for teaching  

NASA Astrophysics Data System (ADS)

This is a description of one aspect of research carried out to assess and compare the processing loads of typical mathematical representations and strategies used by teachers and young children. The sample consisted of 29 children, aged between 5 and 8 years, and their teachers in a suburban school in a low to medium socioeconomic area in Brisbane, Australia. Children were interviewed and videotaped individually before and after teaching of a specified concept, in this case place value. Teachers were interviewed and asked to describe their teaching strategies. The results show that some representations and strategies, that either teachers or children choose, impose an unnecessary processing load which can interfere with conceptual learning. If teachers are aware of this load then representations can be used in such a way that the processing loads are minimized.

Boulton-Lewis, Gillian; Halford, Graeme

1992-02-01

334

Software Tools for Recording Image Inspection Processes  

Microsoft Academic Search

Abstract We present an information gathering system for medical image inspection that can record and replay computer- and human-centric information. Computer-centric information consists of static measurements about image drawings and associated textual annotations, as well as, dynamic measurements about image frame selection, zoom level, image panning, sub-area cropping, and mouse movement. Human-centric information includes audio and video signals during the

Young-jin Lee; Peter Bajcsy

335

Robust hand image processing for biometric application  

Microsoft Academic Search

A new approach for both hand image segmentation and feature extraction is described. The main advantage of this approach,\\u000a namely its robustness to low quality images, is illustrated through verification experiments with two public databases: one\\u000a with scanned images from 50 subjects and another one with low-quality images acquired from 23 subjects, from a conventional\\u000a webcam. In both cases, features

Jugurta MontalvaoLucas Molina; Lucas Molina; Jânio Canuto

2010-01-01

336

SAR Image Processing Using Artificial Intelligence Planning  

Microsoft Academic Search

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

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

1999-01-01

337

Image data processing in the '90s  

Microsoft Academic Search

The new Meteosat proposed for Europe is described. The main characteristics of the new Meteosat are: (1) the image of the earth will be subdivided into 100 million pixels; (2) each image is implemented in seven spectral channels; (3) microwave measuring equipment will probe the atmosphere in different altitude layers; and (4) images will be produced every 15 minutes. The

Hans-Juergen Labudda; Helmut Kappel

1987-01-01

338

Image reversal trilayer materials and processing  

Microsoft Academic Search

Image reversal trilayer (IRT) combines three lithographic patterning enhancement approaches: image reversal, spin on hard masks, and shrink for recess types of features. With IRT, photoresist imaging is done directly on top of the carbon underlayer. Thick IRT-Carbon Hard Masks (CHM) films provide effective antireflection with high NA lithography and are more etch resistant than common photoresist. IRT-Silicon Hard Masks

David J. Abdallah; Kazunori Kurosawa; Elizabeth Wolfer; Victor Monreal; M. Dalil Rahman; Dongkwan Lee; Mark Neisser; Ralph R. Dammel

2009-01-01

339

A CMOS vision chip with SIMD processing element array for 1 ms image processing  

Microsoft Academic Search

Conventional image processing systems use a video signal as a transmission signal between an image sensor and image processor. The video rate, however, is not fast enough for some applications such as visual feedback for robot control, automobiles, gesture recognition for human interfaces, high speed visual inspection, microscope image processing, and so on. For such applications, the video signal, which

M. Ishikawa; K. Ogawa; T. Komuro; I. Ishii

1999-01-01

340

Improved image quality with Bayesian image processing in digital mammography  

Microsoft Academic Search

Recent developments in digital detectors have led to investigating the importance of grids in mammography. We propose to examine the use Bayesian Image Estimation (BIE) as a software means of removing scatter post acquisition and to compare this technique to a grid. BIE is an iterative, non- linear statistical estimation technique that reduces scatter content while improving CNR. Images of

Alan H. Baydush; Carey E. Floyd

2000-01-01

341

GStreamer as a framework for image processing applications in image fusion  

NASA Astrophysics Data System (ADS)

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.

Burks, Stephen D.; Doe, Joshua M.

2011-05-01

342

Extraocular image processing for retinal prosthesis based on DSP  

Microsoft Academic Search

Simulations of artificial vision suggest that thousands of electrodes may be required to restore vision for ones with diseases of the outer retina. With the development of MEMS fabrication process for the stimulation electrode array, extraocular image processing is becoming more and more important for the retinal prosthesis systems. A Digital Signal Processor (DSP) based extraocular image processing system (EIPS)

Yuexian Zou; Guangyi Shi; Yufeng Jin; Yali Zheng

2009-01-01

343

Fast evolutionary image processing using Multi-GPUs  

Microsoft Academic Search

In this paper, the authors propose a fast evolutionary image processing system. The authors employ graphics processing unit (GPU) to automatic construction of tree-structural image transformation (ACTIT) for the purpose of reducing optimization time. Besides, the system calculates in parallel by using multiple GPUs for the fast processing. The optimization speed of the proposed system is several hundred times faster

Jun Ando; Tomoharu Nagao

2007-01-01

344

Spatial versus temporal stability issues in image processing neuro chips  

Microsoft Academic Search

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,

Takashi Matsumoto; Haruo Kobayashi; Yoshio Togawa

1992-01-01

345

Medical image processing on the GPU - Past, present and future.  

PubMed

Graphics processing units (GPUs) are used today in a wide range of applications, mainly because they can dramatically accelerate parallel computing, are affordable and energy efficient. In the field of medical imaging, GPUs are in some cases crucial for enabling practical use of computationally demanding algorithms. This review presents the past and present work on GPU accelerated medical image processing, and is meant to serve as an overview and introduction to existing GPU implementations. The review covers GPU acceleration of basic image processing operations (filtering, interpolation, histogram estimation and distance transforms), the most commonly used algorithms in medical imaging (image registration, image segmentation and image denoising) and algorithms that are specific to individual modalities (CT, PET, SPECT, MRI, fMRI, DTI, ultrasound, optical imaging and microscopy). The review ends by highlighting some future possibilities and challenges. PMID:23906631

Eklund, Anders; Dufort, Paul; Forsberg, Daniel; Laconte, Stephen M

2013-06-05

346

Human skin surface evaluation by image processing  

NASA Astrophysics Data System (ADS)

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.

Zhu, Liangen; Zhan, Xuemin; Xie, Fengying

2003-12-01

347

Millikan Lecture 1994: Understanding and teaching important scientific thought processes  

NSDL National Science Digital Library

Physics is an intellectually demanding discipline and many students have difficulties learning to deal with it. Further, our instruction is often far less effective than we realize. Indeed, recent investigations have revealed that many students, even when getting good grades, emerge from their basic physics courses with signification scientific misconcepts, with prescientific notions, with poor problem-solving skills, and with an inability to apply what they ostensibly learned. In short, students' acquired physics knowledge is often largely nominal rather than functiional. This situation leads one to ask: Why is this so, and what can be done about it? More specifically, it has led me to address the following two basic questions: (a) Can one understand better the underlying throught processes required to deal with a science like physics? (b) How can such an understanding be used to design more effective instruction? These are the questions which have been the focus of my work during the last several years and which I want to discuss in this article.

Reif, Frederick

2011-07-28

348

CT Image Processing and Medical Rapid Prototyping  

Microsoft Academic Search

In this paper, the three-dimensional (3D) models of body structures from computed tomography (CT) image are reconstructed in SolidWorks by using planar contour method and medical rapid prototyping (MRP) models are performed. This paper reports how to transfer CT image into digital binary matrixes; then, to capture section contour points from medical image per slice, to create B-spline curve with

Jiman Han; Yi Jia

2008-01-01

349

The emergence of the teaching\\/learning process in preschoolers: theory of mind and age effect  

Microsoft Academic Search

This study analysed the gradual emergence of the teaching\\/learning process by examining theory of mind (ToM) acquisition and age effects in the preschool period. We observed five dyads performing a jigsaw task drawn from a previous study. Three stages were identified. In the first one, the teacher focuses on the execution of her\\/his own task without paying any attention to

Leïla Bensalah

2011-01-01

350

Towards process-oriented teaching for self-directed lifelong learning: a multidimensional perspective  

Microsoft Academic Search

Self-directed learning is often embraced as an important educational goal, although for quite different reasons, from the improvement of school learning to the critical assessment of the claims of democracy. Most reasons imply that self-direction is important in learning throughout life. Therefore process-oriented teaching, which aims to foster self-directed lifelong learning, needs a broad and multidimensional theoretical basis. The important

Sanneke Bolhuis

2003-01-01

351

Computational art and creative coding: teaching CS1 with processing (abstract only)  

Microsoft Academic Search

This workshop showcases a new approach to teaching CS1 using computational art as a context. Participants will be introduced to the Processing programming language and environment, designed for the construction of 2D and 3D visual forms. Its IDE is lightweight, but well-suited for the rapid prototyping needed for dynamic visual work. We hope to bring the excitement, creativity, and innovation

Ira Greenberg; Deepak Kumar; Dianna Xu

2012-01-01

352

Effectiveness comparison for two methods of teaching process simulation to industrial technology students  

Microsoft Academic Search

The purpose of this study was to determine the effect on student achievement (i.e., comprehension and retention of declarative knowledge) that resulted from teaching process simulation using manual methods as compared to computer-based methods, specifically ProModel 2.0. The methodology used in this study was based on a quasi-experimental pretest\\/posttest research design. The sample for this study consisted of 32 students

Steven Gregory Stanton

1997-01-01

353

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

Microsoft Academic Search

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

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

2010-01-01

354

Adaptable infrared image processing module implemented in FPGA  

NASA Astrophysics Data System (ADS)

Rapid development of infrared detector arrays caused a need to develop robust signal processing chain able to perform operations on infrared image in real-time. Every infrared detector array suffers from so-called nonuniformity, which has to be digitally compensated by the internal circuits of the camera. Digital circuit also has to detect and replace signal from damaged detectors. At the end the image has to be prepared for display on external display unit. For the best comfort of viewing the delay between registering the infrared image and displaying it should be as short as possible. That is why the image processing has to be done with minimum latency. This demand enforces to use special processing techniques like pipelining and parallel processing. Designed infrared processing module is able to perform standard operations on infrared image with very low latency. Additionally modular design and defined data bus allows easy expansion of the signal processing chain. Presented image processing module was used in two camera designs based on uncooled microbolometric detector array form ULIS and cooled photon detector from Sofradir. The image processing module was implemented in FPGA structure and worked with external ARM processor for control and coprocessing. The paper describes the design of the processing unit, results of image processing, and parameters of module like power consumption and hardware utilization.

Bieszczad, Grzegorz; Sosnowski, Tomasz; Madura, Henryk; Kastek, Mariusz; Barela, Jaroslaw

2010-04-01

355

Sub-image data processing in Astro-WISE  

NASA Astrophysics Data System (ADS)

Most often, astronomers are interested in a source (e.g., moving, variable, or extreme in some colour index) that lies on a few pixels of an image. However, the classical approach in astronomical data processing is the processing of the entire image or set of images even when the sole source of interest may exist on only a few pixels of one or a few images. This is because pipelines have been written and designed for instruments with fixed detector properties (e.g., image size, calibration frames, overscan regions, etc.). Furthermore, all metadata and processing parameters are based on an instrument or a detector. Accordingly, out of many thousands of images for a survey, this can lead to unnecessary processing of data that is both time-consuming and wasteful. We describe the architecture and an implementation of sub-image processing in Astro-WISE. The architecture enables a user to select, retrieve and process only the relevant pixels in an image where the source exists. We show that lineage data collected during the processing and analysis of datasets can be reused to perform selective reprocessing (at sub-image level) on datasets while the remainder of the dataset is untouched, a difficult process to automate without lineage.

Mwebaze, Johnson; Boxhoorn, Danny; McFarland, John; Valentijn, Edwin A.

2013-01-01

356

Image Processing Via Level Set Curvature Flow  

Microsoft Academic Search

We present a controlled image smoothing and enhancement method based on a curvature flow interpretation of the geometric heat equation. Compared to existing techniques, the model has several distinct advantages. (i) It contains just one enhancement parameter. (ii) The scheme naturally inherits a stopping criterion from the image; continued application of the scheme produces no further change. (iii) The method

R. Malladi; J. A. Sethian

1995-01-01

357

Image processing via level set curvature flow  

Microsoft Academic Search

We present a controlled image smoothing and enhancement method based on a curvature flow interpretation of the geometric heat equation. Compared to existing techniques, the model has several distinct advantages. (i) It contains just one enhancement parameter. (ii) The scheme naturally inherits a stopping criterion from the image; continued application of the scheme produces no further change. (iii) The method

R. Malladi; J. A. Sethian

1995-01-01

358

Color quantitation through image processing in dermatology  

Microsoft Academic Search

Classical color models and their applications to computer vision are reviewed. The performances of color quantitation from digitized images are compared with those derived from a chromameter. The color quantitation obtained from either digitized color slides or directly digitized images is proved to be more efficient than the conventional visual assessment of observers. A methodology is proposed for determining the

M. Herbin; A. Venot; J. Y. Devaux; C. Piette

1990-01-01

359

3D Volume Representation of brain tumor using image processing  

Microsoft Academic Search

This research opens a new window in the field of image processing by 3D Volume Representation of tumor through the use of Magnetic Resonant Imaging and an integrated software tool called 3D Slicer. The technique used for the piece of work is Label map segmentation and surface model making. It is used to segment the brain tumor from 2D images

Ayesha Amir Siddiqi; Attaullah Khawaja; Mashal Tariq

2011-01-01

360

Image Processing Tools Applied to Wind Tunnel Testing  

Microsoft Academic Search

Image processing tools are needed for new optical measurement methods like Pressure Sensitive Paint (PSP), Infrared Thermography (IRT) and Particle Image Velocimetry (PIV). They are used to transform the pixel coordinates into 3D real coordinates. For surface measurement methods as PSP, the viewed object must be located in the image. The only one way to achieve this requirement is to

Y. Le Sant

361

The development of sun-tracking system using image processing.  

PubMed

This article presents the development of an image-based sun position sensor and the algorithm for how to aim at the Sun precisely by using image processing. Four-quadrant light sensors and bar-shadow photo sensors were used to detect the Sun's position in the past years. Nevertheless, neither of them can maintain high accuracy under low irradiation conditions. Using the image-based Sun position sensor with image processing can address this drawback. To verify the performance of the Sun-tracking system including an image-based Sun position sensor and a tracking controller with embedded image processing algorithm, we established a Sun image tracking platform and did the performance testing in the laboratory; the results show that the proposed Sun tracking system had the capability to overcome the problem of unstable tracking in cloudy weather and achieve a tracking accuracy of 0.04°. PMID:23615582

Lee, Cheng-Dar; Huang, Hong-Cheng; Yeh, Hong-Yih

2013-04-24

362

The Development of Sun-Tracking System Using Image Processing  

PubMed Central

This article presents the development of an image-based sun position sensor and the algorithm for how to aim at the Sun precisely by using image processing. Four-quadrant light sensors and bar-shadow photo sensors were used to detect the Sun's position in the past years. Nevertheless, neither of them can maintain high accuracy under low irradiation conditions. Using the image-based Sun position sensor with image processing can address this drawback. To verify the performance of the Sun-tracking system including an image-based Sun position sensor and a tracking controller with embedded image processing algorithm, we established a Sun image tracking platform and did the performance testing in the laboratory; the results show that the proposed Sun tracking system had the capability to overcome the problem of unstable tracking in cloudy weather and achieve a tracking accuracy of 0.04°.

Lee, Cheng-Dar; Huang, Hong-Cheng; Yeh, Hong-Yih

2013-01-01

363

Brain SPECT perfusion imaging: Image acquisition, processing, display, and interpretation.  

National Technical Information Service (NTIS)

The organization of the workshop, forming the basis for these proceedings, evolved from the interest and enthusiasm of members of the Brain Imaging Council of the Society of Nuclear Medicine. It was organized to provide a forum for investigators and users...

D. A. Weber A. D. Woodhead K. J. Vivirito M. D. Devous R. S. Tikofsky

1991-01-01

364

Magnetic Resonance Imaging Studies of Process Rheology.  

National Technical Information Service (NTIS)

The objective of this program is to develop magnetic resonance imaging and numerical modeling methods which will provide for improved methods of flow analysis as well as an improved understanding of the flow behavior of solid particle filled polymeric sus...

D. T. Wadiac G. A. Lo J. C. Crowley R. Van De Griend S. W. Sinton

1988-01-01

365

Application of MATLAB image processing technology in sewage monitoring system  

Microsoft Academic Search

This paper puts forward the application of Matlab image processing technology in sewage monitoring system. The percentage of the bubbles on the surface of the water can be got by using some functions in the image processing toolbox of MATLAB, such as binaryzation, dilating, erosion and so on. The automatic alarm will be raised when the percentage of the bubbles

Huidan Cao; Yuming Shen

2009-01-01

366

Automatic image analysis process for the detection of concealed weapons  

Microsoft Academic Search

The goal of this research is to develop a process, using current imaging hardware and without human intervention, that provides an accurate and timely detection alert of a concealed weapon and its location in the image of the luggage. There are several processes in existence that are able to highlight or otherwise outline a concealed weapon in baggage but so

Richard Gesick; Caner Saritac; Chih-Cheng Hung

2009-01-01

367

Encouraging undergraduate research: a digital image processing approach  

Microsoft Academic Search

In recent years, undergraduate research has gained significant attention in many computer science departments. There have been efforts to identify courses that could support undergraduate research activities. Some courses such as image processing provides excellent research opportunities to undergraduate students. However, in small and comprehensive schools there is little or no image processing research to support the course. This paper

Rahman Tashakkori

2005-01-01

368

IPL processing of the Mariner 10 images of Mercury  

Microsoft Academic Search

This paper describes the digital processing performed on the images of Mercury returned to earth from Mariner 10. Each image contains considerably more information than can be displayed in a single picture. Several specialized processing techniques and procedures are utilized to display the particular information desired for specific scientific analyses: radiometric decalibration for photometric investigations, high-pass filtering to characterize morphology,

J. M. Soha; D. J. Lynn; J. J. Lorre; J. A. Mosher; N. N. Thayer; D. A. Elliott; W. D. Benton; R. E. Dewar

1975-01-01

369

System-theoretical approach to multistage image processing  

Microsoft Academic Search

We present a novel three-dimensional network and its application to pattern analysis. This is a multistage architecture which investigates partial correlations between structural image components. Mathematical description of the multistage hierarchical processing is provided together with the network architecture. Initially the image is partitioned to be processed in parallel channels. In each channel, the structural components are transformed and subsequently

Maxim A. Grudin; Leonid I. Timchenko; David M. Harvey; Vladimir P. Gel

1996-01-01

370

Visualizing brain images in an undergraduate signal processing course  

Microsoft Academic Search

This paper describes a MRI brain image visualization approach for an undergraduate signal processing course in a liberal art college environment. Owing to the highly mathematical nature of signal processing theory, using visualized biomedical images may increase students' curiosity in both the course itself and the biomedical science in general. The visualization tool is constructed with incremental level of difficulty,

Lin Cheng

2010-01-01

371

The research of image processing algorithms in AGVS  

Microsoft Academic Search

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

Jun-You Zhang; Shu-Feng Wang

2007-01-01

372

Study of wood defects recognition based on Image Processing  

Microsoft Academic Search

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

Hongbo Mu; Dawei Qi; Mingming Zhang

2010-01-01

373

Latency and bandwidth considerations in parallel robotics image processing  

Microsoft Academic Search

Parallel image processing for robotics applications differs in a fundamental way from parallel scientific computing applications: the problem size is fixed, and latency requirements are tight. This brings Amdhal's law in effect with full force, so that message-passing latency and bandwidth severely restrict performance. The authors examine an application from this domain, stereo image processing, which has been implemented in

Jon A. Webb

1993-01-01

374

Latency and bandwidth considerations in parallel robotics image processing  

Microsoft Academic Search

Parallel image processing for robotics applications differs in a fundamental way from parallel scientific computing applications: the problem size is fixed, and latency requirements are tight. This brings Amdhal ’s law in eflect with full force, so that message-passing latency and bandwidth severely restrict performance. In this paper we examine an application from this domain, stereo image processing, which has

Jon A. Webb

1993-01-01

375

Image Processing via the Beltrami Operator  

Microsoft Academic Search

. 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

Ron Kimmel; Ravi Malladi; Nir A. Sochen

1998-01-01

376

Image processing via level set curvature flow  

SciTech Connect

We present a controlled image smoothing and enhancement method based on a curvature flow interpretation of the geometric heat equation. Compared to existing techniques, the model has several distinct advantages. (i) It contains just one enhancement parameter. (ii) The scheme naturally inherits a stopping criterion from the image; continued application of the scheme produces no further change. (iii) The method is one of the fastest possible schemes based on a curvature-controlled approach. 15 ref., 6 figs.

Malladi, R.; Sethian, J.A. [Lawrence Berkeley Lab., CA (United States)]| [Univ. of California, Berkeley, CA (United States)

1995-07-18

377

High-performance image processing on the desktop  

NASA Astrophysics Data System (ADS)

The suitability of computers to the task of medical image visualization for the purposes of primary diagnosis and treatment planning depends on three factors: speed, image quality, and price. To be widely accepted the technology must increase the efficiency of the diagnostic and planning processes. This requires processing and displaying medical images of various modalities in real-time, with accuracy and clarity, on an affordable system. Our approach to meeting this challenge began with market research to understand customer image processing needs. These needs were translated into system-level requirements, which in turn were used to determine which image processing functions should be implemented in hardware. The result is a computer architecture for 2D image processing that is both high-speed and cost-effective. The architectural solution is based on the high-performance PA-RISC workstation with an HCRX graphics accelerator. The image processing enhancements are incorporated into the image visualization accelerator (IVX) which attaches to the HCRX graphics subsystem. The IVX includes a custom VLSI chip which has a programmable convolver, a window/level mapper, and an interpolator supporting nearest-neighbor, bi-linear, and bi-cubic modes. This combination of features can be used to enable simultaneous convolution, pan, zoom, rotate, and window/level control into 1 k by 1 k by 16-bit medical images at 40 frames/second.

Jordan, Stephen D.

1996-04-01

378

Depth image post-processing method by diffusion  

NASA Astrophysics Data System (ADS)

Multi-view three-dimensional television relies on view synthesis to reduce the number of views being transmitted. Arbitrary views can be synthesized by utilizing corresponding depth images with textures. The depth images obtained from stereo pairs or range cameras may contain erroneous values, which entail artifacts in a rendered view. Post-processing of the data may then be utilized to enhance the depth image with the purpose to reach a better quality of synthesized views. We propose a Partial Differential Equation (PDE)-based interpolation method for a reconstruction of the smooth areas in depth images, while preserving significant edges. We modeled the depth image by adjusting thresholds for edge detection and a uniform sparse sampling factor followed by the second order PDE interpolation. The objective results show that a depth image processed by the proposed method can achieve a better quality of synthesized views than the original depth image. Visual inspection confirmed the results.

Li, Yun; Sjöström, Mârten; Jennehag, Ulf; Olsson, Roger

2013-03-01

379

Graphical user interface for image acquisition and processing  

SciTech Connect

An event-driven GUI-based image acquisition interface for the IDL programming environment designed for CCD camera control and image acquisition directly into the IDL environment where image manipulation and data analysis can be performed, and a toolbox of real-time analysis applications. Running the image acquisition hardware directly from IDL removes the necessity of first saving images in one program and then importing the data into IDL for analysis in a second step. Bringing the data directly into IDL creates an opportunity for the implementation of IDL image processing and display functions in real-time. program allows control over the available charge coupled device (CCD) detector parameters, data acquisition, file saving and loading, and image manipulation and processing, all from within IDL. The program is built using IDL's widget libraries to control the on-screen display and user interface.

Goldberg, Kenneth A. (Berkeley, CA)

2002-01-01

380

Image processing for drift compensation in fluorescence microscopy  

NASA Astrophysics Data System (ADS)

Fluorescence microscopy is characterized by low background noise, thus a fluorescent object appears as an area of high signal/noise. Thermal gradients may result in apparent motion of the object, leading to a blurred image. Here, we have developed an image processing methodology that may remove/reduce blur significantly for any type of microscopy. A total of ~100 images were acquired with a pixel size of 30 nm. The acquisition time for each image was approximately 1 second. We can quantity the drift in X and Y using the sub pixel accuracy computed centroid location of an image object in each frame. We can measure drifts down to approximately 10 nm in size and a drift-compensated image can therefore be reconstructed on a grid of the same size using the "Shift and Add" approach leading to an image of identical size as the individual image. We have also reconstructed the image using a 3 fold larger grid with a pixel size of 10 nm. The resulting images reveal details at the diffraction limit. In principle we can only compensate for inter-image drift - thus the drift that takes place during the acquisition time for the individual image is not corrected. We believe that our results are of general applicability in microscopy and other types of imaging. A prerequisite for our method is the presence of a trackable object in the image such as a cell nucleus.

Petersen, Steffen B.; Viruthachalam, Thiagarajan; Coutinho, Isabel; Gajula, Gnana P.; Neves-Petersen, Maria Teresa

2013-02-01

381

Hybrid image processing instantiation: I. Optical subsystem  

NASA Astrophysics Data System (ADS)

We describe the optical correlator subsystem of a hybrid vision system. The optical correlator has a Kopin SLM at the input plane and a fast analog nematic Boulder Nonlinear Systems SLM at the filter plane. Filters are computed to provide identification and pose estimation for various objects. Spatial non-uniformities in the filter SLM are particularly bothersome from an operational standpoint. Methods of measuring and accommodating for the non- uniformities are described. Correlation filters produce an initially coarse identification, and later filters are intended to refine the coarse estimate of the pose of the observed object. Certain image preprocessing operations and their results are discussed; these include the cross- correlation that result when a Laplacian of Gaussian image is used as input to the system whose filter has been computed for a Sobel edge-extracted version of the reference image.

Morelli, Michael V.; Juday, Richard D.; Monroe, Stanley E.; Chien, Chiun-Hong; Li, Wann-Quang

1998-07-01

382

Suitable post processing algorithms for X-ray imaging using oversampled displaced multiple images  

NASA Astrophysics Data System (ADS)

X-ray imaging systems such as photon counting pixel detectors have a limited spatial resolution of the pixels, based on the complexity and processing technology of the readout electronics. For X-ray imaging situations where the features of interest are smaller than the imaging system pixel size, and the pixel size cannot be made smaller in the hardware, alternative means of resolution enhancement require to be considered. Oversampling with the usage of multiple displaced images, where the pixels of all images are mapped to a final resolution enhanced image, has proven a viable method of reaching a sub-pixel resolution exceeding the original resolution. The effectiveness of the oversampling method declines with the number of images taken, the sub-pixel resolution increases, but relative to a real reduction of imaging pixel sizes yielding a full resolution image, the perceived resolution from the sub-pixel oversampled image is lower. This is because the oversampling method introduces blurring noise into the mapped final images, and the blurring relative to full resolution images increases with the oversampling factor. One way of increasing the performance of the oversampling method is by sharpening the images in post processing. This paper focus on characterizing the performance increase of the oversampling method after the use of some suitable post processing filters, for digital X-ray images specifically. The results show that spatial domain filters and frequency domain filters of the same type yield indistinguishable results, which is to be expected. The results also show that the effectiveness of applying sharpening filters to oversampled multiple images increase with the number of images used (oversampling factor), leaving 60-80% of the original blurring noise after filtering a 6 × 6 mapped image (36 images taken), where the percentage is depending on the type of filter. This means that the effectiveness of the oversampling itself increase by using sharpening filters, and more images taken can be considered worth the effort.

Thim, J.; Reza, S.; Nawaz, K.; Norlin, B.; O'Nils, M.; Oelmann, B.

2011-02-01

383

Image reversal trilayer process using standard positive photoresist  

NASA Astrophysics Data System (ADS)

Conventional trilayer schemes alleviate the decreasing photoresist budgets as well as satisfy the antireflection issues associated with high NA imaging. However, a number of challenges still exist with standard trilayer processing, most notable among which is the lack of broad resist compatibility and trade-offs associated with improving Si content, such as stability and lithography performance. One way to circumvent these issues is to use a silicon hard mask coated over a photoresist image of reverse tone to the desired pattern. Feasibility of this image reversal trilayer process was demonstrated by patterning of trenches and contact holes in a carbon hard mask from line and pillar photoresist images, respectively. This paper describes the lithography, pattern transfer process and materials developed for the image reversal trilayer processing.

Abdallah, David J.; Sagan, John; Kurosawa, Kazunori; Li, Jin; Takano, Yusuke; Shimizu, Yasuo; Shinde, Ninad; Nagahara, Tatsuro; Ishikawa, Tomonori; Dammel, Ralph R.

2009-03-01

384

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

Microsoft Academic Search

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

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

2005-01-01

385

Computer vision applications for coronagraphic optical alignment and image processing.  

PubMed

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. PMID:23669856

Savransky, Dmitry; Thomas, Sandrine J; Poyneer, Lisa A; Macintosh, Bruce A

2013-05-10

386

Computer vision applications for coronagraphic optical alignment and image processing  

NASA Astrophysics Data System (ADS)

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.

Savransky, Dmitry; Thomas, Sandrine J.; Poyneer, Lisa A.; Macintosh, Bruce A.

2013-05-01

387

Automated system and method for processing of astronomical images  

US Patent & Trademark Office Database

This invention encompasses near-real-time processing of astronomical images for viewing on a computer. This image processing method is preferably integrated with the control of an astronomical observatory. The subject invention thus includes an Internet-based system that provides a virtual experience of an astronomical observatory. The subject invention preferably uses an unmanned astronomical observatory to observe galaxies, nebulae, stars, etc. The observatory produces color images suitable for viewing on a computer monitor. These images are delivered to users across the Internet using web browser-based software.

2007-03-20

388

The real-time image processing technique based on DSP  

Microsoft Academic Search

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

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

2005-01-01

389

Performance evaluation of image processing algorithms in digital mammography  

NASA Astrophysics Data System (ADS)

The purpose of the study is to evaluate the performance of different image processing algorithms in terms of representation of microcalcification clusters in digital mammograms. Clusters were simulated in clinical raw ("for processing") images. The entire dataset of images consisted of 200 normal mammograms, selected out of our clinical routine cases and acquired with a Siemens Novation DR system. In 100 of the normal images a total of 142 clusters were simulated; the remaining 100 normal mammograms served as true negative input cases. Both abnormal and normal images were processed with 5 commercially available processing algorithms: Siemens OpView1 and Siemens OpView2, Agfa Musica1, Sectra Mamea AB Sigmoid and IMS Raffaello Mammo 1.2. Five observers were asked to locate and score the cluster(s) in each image, by means of dedicated software tool. Observer performance was assessed using the JAFROC Figure of Merit. FROC curves, fitted using the IDCA method, have also been calculated. JAFROC analysis revealed significant differences among the image processing algorithms in the detection of microcalcifications clusters (p=0.0000369). Calculated average Figures of Merit are: 0.758 for Siemens OpView2, 0.747 for IMS Processing 1.2, 0.736 for Agfa Musica1 processing, 0.706 for Sectra Mamea AB Sigmoid processing and 0.703 for Siemens OpView1. This study is a first step towards a quantitative assessment of image processing in terms of cluster detection in clinical mammograms. Although we showed a significant difference among the image processing algorithms, this method does not on its own allow for a global performance ranking of the investigated algorithms.

Zanca, Federica; Van Ongeval, Chantal; Jacobs, Jurgen; Pauwels, Herman; Marchal, Guy; Bosmans, Hilde

2008-04-01

390

Applications of Vector Fields to Image Processing  

Microsoft Academic Search

We use rotational and curvature properties of vector fields to identify critical features of an image. Using vector analysis and dif-ferential geometry, we establish the properties needed, and then use these properties in three ways. First, our results make it theoretically possible to identify extremal edges of an intensity function f(x, y) of two variables by considering the gradient vector

Raul Machuca; Keith Phillips

1983-01-01

391

Image processing for weather satellite cloud segmentation  

Microsoft Academic Search

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

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

1995-01-01

392

SVD spectral feature of image processing  

Microsoft Academic Search

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

Deshen Xia; Hua Li; Yong Qiu

1996-01-01

393

Color image processing in Canon's digital camera  

Microsoft Academic Search

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

Yoshiro Udagawa

1996-01-01

394

Using Image Processing to Determine Emphysema Severity  

Microsoft Academic Search

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

Alexander McKenzie; Alberto Sadun

2010-01-01

395

University Image: An Information Processing Perspective.  

ERIC Educational Resources Information Center

|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)|

Parameswaran, Ravi; Glowacka, Aleksandra E.

1995-01-01

396

Enhanced neutron imaging detector using optical processing.  

National Technical Information Service (NTIS)

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 ...

D. P. Hutchinson S. A. McElhaney

1992-01-01

397

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

NASA Astrophysics Data System (ADS)

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.

Egger, A. E.; Carpi, A.

2008-12-01

398

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

SciTech Connect

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.

Matsuyama, T.

1987-05-01

399

A Theoretical Model of the Language Learning/Teaching Process. Working Papers on Bilingualism, No. 11.  

ERIC Educational Resources Information Center

The aim of this paper is to outline one approach to the study of language teaching by proposing a theory of its minimum elements. This model takes as its focus all of the circumstances in which a learner learns and a professional teacher teaches. The language teaching profession deals with many types of learners, teaching/learning conditions,…

Strevens, Peter

400

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

PubMed

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

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

2005-08-01

401

The necessity of urologic ultrasound images processing.  

PubMed

The purpose of the paper is to present a software system for the handling and management of urologic ultrasound images. In particular, the system was used to detect men's prostate in ultrasound images and than to obtain a 3D model for the detected object and to calculate its volume. The software system can be used in hospitals which do not have either CAT scanners or NMR/MRI equipment (the majority of Romanian hospitals). It provides these hospitals with a tool enabling a more accurate diagnosis, which in turn improves the efficiency of the hospital, saves money, and has a profound psychological benefit on the well-being of the patient. PMID:10179715

Crivianu-Gaita, D; Gaspar, A; Muntean, G; Miclea, F L; Holban, S T

1997-01-01

402

Integrative Processes: Neuroscience Clinical Imaging Biomarkers  

Microsoft Academic Search

\\u000a The promise of neuroimaging to speed up the discovery of drugs and the development in the neurosciences is high and there\\u000a is considerable enthusiasm for the wide-spread implementation of many techniques. However, there is a need to balance advocacy\\u000a with objectivity as we test the decision making value of differing imaging approaches and choose which to integrate into our\\u000a routine

Igor D. Grachev; Richard J. Hargreaves

403

Processed images in human perception: a case study in ultrasound breast imaging.  

PubMed

Two main research efforts in early detection of breast cancer include the development of software tools to assist radiologists in identifying abnormalities and the development of training tools to enhance their skills. Medical image analysis systems, widely known as Computer-Aided Diagnosis (CADx) systems, play an important role in this respect. Often it is important to determine whether there is a benefit in including computer-processed images in the development of such software tools. In this paper, we investigate the effects of computer-processed images in improving human performance in ultrasound breast cancer detection (a perceptual task) and classification (a cognitive task). A survey was conducted on a group of expert radiologists and a group of non-radiologists. In our experiments, random test images from a large database of ultrasound images were presented to subjects. In order to gather appropriate formal feedback, questionnaires were prepared to comment on random selections of original images only, and on image pairs consisting of original images displayed alongside computer-processed images. We critically compare and contrast the performance of the two groups according to perceptual and cognitive tasks. From a Receiver Operating Curve (ROC) analysis, we conclude that the provision of computer-processed images alongside the original ultrasound images, significantly improve the perceptual tasks of non-radiologists but only marginal improvements are shown in the perceptual and cognitive tasks of the group of expert radiologists. PMID:19144483

Yap, Moi Hoon; Edirisinghe, Eran; Bez, Helmut

2009-01-13

404

ZISC-036 Neuro-processor Based Image Processing  

Microsoft Academic Search

This paper deals with neural based image processing and developed solutions using the ZISC-036 neuro-processor, an IBM hardware\\u000a processor which implements the Restricted Coulomb Energy algorithm (RCE) and the KNearest Neighbor algorithm (KNN). The developed\\u000a neural based techniques have been applied for image enhancement in order to restore old movies (noise reduction, focus correction,\\u000a etc.), to improve digital television images,

Kurosh Madani; Ghislain De Tremiolles; Pascal Tannhof

2001-01-01

405

Design and implementation of non-linear image processing functions for CMOS image sensor  

NASA Astrophysics Data System (ADS)

Today, solid state image sensors are used in many applications like in mobile phones, video surveillance systems, embedded medical imaging and industrial vision systems. These image sensors require the integration in the focal plane (or near the focal plane) of complex image processing algorithms. Such devices must meet the constraints related to the quality of acquired images, speed and performance of embedded processing, as well as low power consumption. To achieve these objectives, low-level analog processing allows extracting the useful information in the scene directly. For example, edge detection step followed by a local maxima extraction will facilitate the high-level processing like objects pattern recognition in a visual scene. Our goal was to design an intelligent image sensor prototype achieving high-speed image acquisition and non-linear image processing (like local minima and maxima calculations). For this purpose, we present in this article the design and test of a 64×64 pixels image sensor built in a standard CMOS Technology 0.35 ?m including non-linear image processing. The architecture of our sensor, named nLiRIC (non-Linear Rapid Image Capture), is based on the implementation of an analog Minima/Maxima Unit. This MMU calculates the minimum and maximum values (non-linear functions), in real time, in a 2×2 pixels neighbourhood. Each MMU needs 52 transistors and the pitch of one pixel is 40×40 mu m. The total area of the 64×64 pixels is 12.5mm2. Our tests have shown the validity of the main functions of our new image sensor like fast image acquisition (10K frames per second), minima/maxima calculations in less then one ms.

Musa, Purnawarman; Sudiro, Sunny A.; Wibowo, Eri P.; Harmanto, Suryadi; Paindavoine, Michel

2012-11-01

406

Assessment of tardive dyskinesia by means of digital image processing  

Microsoft Academic Search

A wireless device for the assessment of tardive dyskinesia by means of digital image processing is presented. Four skin-cream dots placed around the subjects' mouth are recorded by a video camera. The image is passed to a framegrabber with a signal processor, where it is converted from analogue to digital. A fast spot-detecting algorithm implemented on the signal processor tracks

Wagner F. Gattaz; Christian Biichel

1993-01-01

407

Mode Shape Measurement of Piezoelectric Resonators Using Image Processing Technique  

Microsoft Academic Search

An image processing technique for measuring the mode shapes of piezoelectric resonators is described. Laser speckle interference, a periodic resonator excitation and charge coupled device (CCD) image captures are effectively combined in this method. The experimental results for three kinds of AT-cut quartz resonators demonstrate the applicability of the proposed method.

Yasuaki Watanabe; Yuji Shikama; Shigeyoshi Goka; Takayuki Sato; Hitoshi Sekimoto

2001-01-01

408

Central Processing of Rectal Pain: A Functional MR Imaging Study  

Microsoft Academic Search

BACKGROUND AND PURPOSE: Although the central processing of somatic pain has been dealt with in numerous brain imaging studies, the neural correlates of visceral pain have re- ceived much more limited attention. Our goal was to assess the feasibility of detecting brain activation patterns induced by rectal pain by means of functional MR imaging. We hypothe- sized that the cerebral

Monica V. Baciu; Bruno L. Bonaz; Emmanuel Papillon; Richard A. Bost; Jean-Francois Le Bas; Jacques Fournet; Christoph M. Segebarth

409

Recent Advances in Techniques for Hyperspectral Image Processing  

Microsoft Academic Search

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

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

410

Recent advances in techniques for hyperspectral image processing  

Microsoft Academic Search

Imaging spectroscopy, also known as hyperspectral imaging, has been transformed in less than 30 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 hyperspectral data. In this paper, we provide a seminal view on

Antonio Plaza; Jon Atli Benediktsson; Joseph W. Boardman; Gustavo Camps-Valls; Lorenzo Bruzzone; Jocelyn Chanussot; Mathieu Fauvel; Paolo Gamba; Anthony Gualtieri; Mattia Marconcini; James C. Tilton; Giovanna Trianni

2009-01-01

411

Comparative analysis of NDE techniques with image processing  

Microsoft Academic Search

The paper reports comparative results of nondestructive testing (NDT) based experimentation done on created flaws in the casting at the Central Foundry Forge Plant (CFFP) of Bharat Heavy Electrical Ltd. India (BHEL). The present experimental study is aimed at comparing the evaluation of image processing methods applied on the radiographic images of welding defects such as slag inclusion, porosity, lack-of-root

Vijay R. Rathod; R. S. Anand; Alaknanda Ashok

2012-01-01

412

Tracker: Image-Processing and Object-Tracking System Developed.  

National Technical Information Service (NTIS)

Tracker is an object-tracking and image-processing program designed and developed at the NASA Lewis Research Center to help with the analysis of images generated by microgravity combustion and fluid physics experiments. Experiments are often recorded on f...

R. B. Klimek T. W. Wright

1999-01-01

413

Multifrequency remote sensing radar images processing and analysis  

Microsoft Academic Search

The advantages of using multifrequency remote sensing for measuring underlying terrain parameters and radar data interpretation are discussed. Some important peculiarities of image processing and analysis are presented and novel algorithms of two-dimensional image filtering and transformation are proposed. Examples of their application to real data are given. Possible ways of using neural networks on different stages of radar data

V. V. Lukin; Miao Zhenjiang; Yuan Baozong

1993-01-01

414

Reservoir Characterization: Electromagnetic Imaging of CO2 for EOR Processes  

Microsoft Academic Search

Lawrence Livermore National Laboratory is currently involved in a long term study using time-lapse multiple frequency electromagnetic (EM) imaging at a carbon dioxide (COâ) enhanced oil recovery (EOR) site in the San Joaquin Valley, California. The impetus for this proposed research project is to develop the ability to image subsurface COâ during EOR processes while simultaneously discriminating between background heavy

B Kirkendall; J Roberts

2002-01-01

415

CNN Image Processing on a Xilinx Virtex-II 6000  

Microsoft Academic Search

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.

Suleyman Malki; Lambert Spaanenburg

416

Time-varying cellular neural network based morphological image processing  

Microsoft Academic Search

Time-varying cellular neural network is proposed for the morphological image processing and analysis. It has the ability to extract features, describe shapes and recognize patterns. The skeletonization of images, in additional to the four basic binary mathematical morphology operators: dilation, erosion, opening and closing are tested. The tasks template design and computer simulation results are given

Nasser Kamiss Ai-Ani; T. Kacprzak

2000-01-01

417

Image processing in automated measurements of raindrop size and distribution  

Microsoft Academic Search

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

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

1999-01-01

418

Using spectral distances for speedup in hyperspectral image processing  

Microsoft Academic Search

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

S. A. Robila

2005-01-01

419

Latent Image Processing Can Bolster the Value of Quizzes.  

ERIC Educational Resources Information Center

|Latent image processing is a method which reveals hidden ink when marked with a special pen. Using multiple-choice items with commercially available latent image transfers can provide immediate feedback on take-home quizzes. Students benefitted from formative evaluation and were challenged to search for alternative solutions and explain…

Singer, David

1985-01-01

420

An Image Database on a Parallel Processing Network.  

ERIC Educational Resources Information Center

|Describes the design and development of an image database for photographs in the Ulster Museum (Northern Ireland) that used parallelism from a transputer network. Topics addressed include image processing techniques; documentation needed for the photographs, including indexing, classifying, and cataloging; problems; hardware and software aspects;…

Philip, G.; And Others

1991-01-01

421

Learning to teach: enhancing pre?service teachers’ awareness of the complexity of teaching–learning processes  

Microsoft Academic Search

Why is it so challenging to provide pre?service teachers with adequate competence to cope with the complexity of the classroom context? Three key difficulties are frequently reported as reducing the effectiveness of teacher education programs: the construction of an integrated body of knowledge about teaching, the application of theories to practice, and the development of a cognitive lens for analyzing

Billie Eilam; Yael Poyas

2009-01-01

422

Application of Digital Image Processing Techniques to Astronomical Imagery 1978.  

National Technical Information Service (NTIS)

Techniques for using image processing in astronomy are identified and developed for the following: (1) geometric and radiometric decalibration of vidicon-acquired spectra, (2) automatic identification and segregation of stars from galaxies; and (3) displa...

J. J. Lorre

1978-01-01

423

Class 2 MIVS image processing system (MIPS) evaluation.  

National Technical Information Service (NTIS)

The Modular Integrated Video System (MIVS) Image Processing System (MIPS) was developed to assist the International Atomic Energy Agency (IAEA) Inspectorate in the safeguards review of MIVS surveillance data. MIPS is designed to review MIVS surveillance d...

R. D. Horton J. V. Whichello

1991-01-01

424

Micro-image processing system based on CMOS sensor  

NASA Astrophysics Data System (ADS)

A CMOS IS (image sensor) has been widely applied in the multimedia field due to its unique features. One application of the CMOS IS is the microimage processing field is presented. An electronic eyepiece, mainly incorporating optical lens and a CMOS IS, is developed to digitize an optical image, process the digital signals and transmit them to a processor (i.e. computer). The digitized images are displayed in real time and stored off-line for post-mission analysis. An algorithm to process the image is adopted to extract features after the preprocessing operation. In this paper we will describe the system, introduce the structure of eyepiece and discuss the preprocessing technique. Finally some results of feature extraction are given. The system has been applied in the microimage processing field and the availability has been verified.

Xu, Xiangdong; Li, Feng; Zeng, Chao; Zheng, Xianbing

2002-09-01

425

Architecture for Higher Level Digital Image Processing.  

National Technical Information Service (NTIS)

The report begins with a review of desired system design goals. This is followed by a description of available microprocessor hardware, a review of LISP approach to the manipulation of list structures, and a preliminary discussion of the processing requir...

T. J. Willett

1978-01-01

426

Parallel perfusion imaging processing using GPGPU  

PubMed Central

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.

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

2012-01-01

427

Application of Neural Networks In Image Processing and Visualization  

Microsoft Academic Search

Artificial Neural Networks (ANNs) are supporting tools for image processing, even if currently they are no longer considered\\u000a as the default best solution to any classification or regression problem. ANNs conserve their role as non-parametric classifiers,\\u000a non-linear regression operators, or (un)supervised feature extractors. The chapter reviews the applications of ANN methodology\\u000a in all the steps of the image processing chain,

Paul Dan Cristea

428

EVALUATION OF MULTI-CORE ARCHITECTURES FOR IMAGE PROCESSING ALGORITHMS  

Microsoft Academic Search

ABSTRACT Diverse application scenarios and real-time constraints o n computer-vision applications have motivated numerous,explorations of computer architectures that provide more efficiency through hardware scalability by exploiting the characteri stics of image processing and com- puter vision algorithms. The growing,and computational power and programmability,of the of multi-core architectures provide great prospects for ac celeration of image processing and computer,vision algorithms which

Trupti Patil

429

Satellite Image Processing Applications in MedioGRID  

Microsoft Academic Search

This paper presents a high level architectural specification of MedioGRID, a research project aiming at implementing a real-time satellite image processing system for extracting relevant environmental and meteorological parameters on a grid system. The presentation focuses on the key architectural decisions of the GRID-aware satellite image processing system, highlighting the technologies for each of the major components. An essential part

Ovidiu Muresan; textbfFlorin Pop; Dorian Gorgan; Valentin Cristea

2006-01-01

430

IPGE: Image Processing Grid Environment Using Components and Workflow Techniques  

Microsoft Academic Search

\\u000a Computational grids have become a vital emerging platform for high-performance computing. However, some obstacles for the\\u000a prevalence of grid and the grid application development are still far from mature, which is largely due to the immature grid-enabled\\u000a computing environment. Image-Processing Grid Environment (IPGE) is a project that aims at providing high performance image-processing platform in a grid computing environment. IPGE

Ran Zheng; Hai Jin; Qin Zhang; Ying Li; Jian Chen

2004-01-01

431

The design of a distributed image processing and dissemination system  

SciTech Connect

The design and implementation of a distributed image processing and dissemination system was undertaken and accomplished as part of a prototype communication and intelligence (CI) system, the contingency support system (CSS), which is intended to support contingency operations of the Tactical Air Command. The system consists of six (6) Sun 3/180C workstations with integrated ITEX image processors and three (3) 3/50 diskless workstations located at four (4) system nodes (INEL, base, and mobiles). All 3/180C workstations are capable of image system server functions where as the 3/50s are image system clients only. Distribution is accomplished via both local and wide area networks using standard Defense Data Network (DDN) protocols (i.e., TCP/IP, et al.) and Defense Satellite Communication Systems (DSCS) compatible SHF Transportable Satellite Earth Terminals (TSET). Image applications utilize Sun's Remote Procedure Call (RPC) to facilitate the image system client and server relationships. The system provides functions to acquire, display, annotate, process, transfer, and manage images via an icon, panel, and menu oriented Sunview{trademark} based user interface. Image spatial resolution is 512 {times} 480 with 8-bits/pixel black and white and 12/24 bits/pixel color depending on system configuration. Compression is used during various image display and transmission functions to reduce the dynamic range of image data of 12/6/3/2 bits/pixel depending on the application. Image acquisition is accomplished in real-time or near-real-time by special purpose Itex image hardware. As a result all image displays are highly interactive with attention given to subsecond response time. 3 refs., 7 figs.

Rafferty, P.; Hower, L.

1990-01-01

432

Study of gray image pseudo-color processing algorithms  

NASA Astrophysics Data System (ADS)

In gray images which contain abundant information, if the differences between adjacent pixels' intensity are small, the required information can not be extracted by humans, since humans are more sensitive to color images than gray images. If gray images are transformed to pseudo-color images, the details of images will be more explicit, and the target will be recognized more easily. There are two methods (in frequency field and in spatial field) to realize pseudo-color enhancement of gray images. The first method is mainly the filtering in frequency field, and the second is the equal density pseudo-color coding methods which mainly include density segmentation coding, function transformation and complementary pseudo-color coding. Moreover, there are many other methods to realize pseudo-color enhancement, such as pixel's self-transformation based on RGB tri-primary, pseudo-color coding from phase-modulated image based on RGB color model, pseudo-color coding of high gray-resolution image, et al. However, above methods are tailored to a particular situation and transformations are based on RGB color space. In order to improve the visual effect, the method based on RGB color space and pixels' self-transformation is improved in this paper, which is based on HIS color space. Compared with other methods, some gray images with ordinary formats can be processed, and many gray images can be transformed to pseudo-color images with 24 bits. The experiment shows that the processed image has abundant levels, which is consistent with human's perception.

Hu, Jinlong; Peng, Xianrong; Xu, Zhiyong

433

Theoretical demonstration of image characteristics and image formation process depending on image displaying conditions on liquid crystal display  

NASA Astrophysics Data System (ADS)

In soft-copy diagnosis, medical images with a large number of matrices often need displaying of reduced images by subsampling processing. We analyzed overall image characteristics on a liquid crystal display (LCD) depending on the display condition. Specifically, we measured overall Wiener spectra (WS) of displayed X-ray images at the sub-sampling rates from pixel-by-pixel mode to 35 %. A used image viewer took image reductions by sub-sampling processing using bilinear interpolation. We also simulated overall WS from sub-sampled images by bilinear, super-sampling, and nearestneighbor interpolations. The measured and simulated results agreed well and demonstrated that overall noise characteristics were attributed to luminance-value fluctuation, sub-sampling effects, and inherent image characteristics of the LCD. Besides, we measured digital MTFs (modulation transfer functions) on center and shifted alignments from subsampled edge images as well as simulating WS. The WS and digital MTFs represented that the displaying of reduced images induced noise increments by aliasing errors and made it impossible to exhibit high-frequency signals. Furthermore, because super-sampling interpolation processed the image reductions more smoothly compared with bilinear interpolations, it resulted in lower WS and digital MTFs. Nearest-neighbor interpolation had almost no smoothing effect, so the WS and digital MTFs indicated the highest values.

Yamazaki, Asumi; Ichikawa, Katsuhiro; Funahashi, Masao; Kodera, Yoshie

2012-02-01

434

ESO Image Processing Group: MIDAS Memo  

NASA Astrophysics Data System (ADS)

In this summer release of MIDAS a great step towards hardware independence has been achieved: First, the AGL library from ASTRONET is now used by all graphics applications in MIDAS. The metafile oriented AGL package already supports a lot of different graphic devices and backend drivers for other devices may be added easily. Second, all image display applications of MIDAS are now based upon a proto-type of the 101' interfaces. An actual implementation of the 101 interfaces has been done at ESO for the OeAnza IP 8500 and also at Trieste for an EIDOBRAIN 7001. The concept of these 101 routines was successfully tested in Trieste. We implemented MIDAS on the EIOOBRAIN machine by simply replacing the OeAnza IDI interfaces with the IDI interfaces of the Trieste group!

1986-06-01

435

Computer tomography imaging of fast plasmachemical processes  

SciTech Connect

Results are presented from experimental studies of the interaction of a high-enthalpy methane plasma bunch with gaseous methane in a plasmachemical reactor. The interaction of the plasma flow with the rest gas was visualized by using streak imaging and computer tomography. Tomography was applied for the first time to reconstruct the spatial structure and dynamics of the reagent zones in the microsecond range by the maximum entropy method. The reagent zones were identified from the emission of atomic hydrogen (the H{sub {alpha}} line) and molecular carbon (the Swan bands). The spatiotemporal behavior of the reagent zones was determined, and their relation to the shock-wave structure of the plasma flow was examined.

Denisova, N. V.; Katsnelson, S. S.; Pozdnyakov, G. A. [Russian Academy of Sciences, Khristianovich Institute of Theoretical and Applied Mechanics, Siberian Branch (Russian Federation)

2007-11-15

436

Reducing the absorbed dose in analogue radiography of infant chest images by improving the image quality, using image processing techniques.  

PubMed

Radiographic inspection is one of the most widely employed techniques for medical testing methods. Because of poor contrast and high un-sharpness of radiographic image quality in films, converting radiographs to a digital format and using further digital image processing is the best method of enhancing the image quality and assisting the interpreter in their evaluation. In this research work, radiographic films of 70 infant chest images with different sizes of defects were selected. To digitise the chest images and employ image processing the two algorithms (i) spatial domain and (ii) frequency domain techniques were used. The MATLAB environment was selected for processing in the digital format. Our results showed that by using these two techniques, the defects with small dimensions are detectable. Therefore, these suggested techniques may help medical specialists to diagnose the defects in the primary stages and help to prevent more repeat X-ray examination of paediatric patients. PMID:21743073

Karimian, A; Yazdani, S; Askari, M A

2011-07-09

437

Digital image processing: a path to better pictures.  

PubMed

Digital image processing has been used for over a decade to provide startling improvements in the quality of photographs from deep space, satellites and low light level photography. In the last decade considerable work has gone on in major microscope labs in applying these techniques to electron micrographs. Within the last few years a number of factors have come together which allow large scale image processing techniques to be applied at reasonable costs in microscope labs everywhere. The system described here provides hardware for digitization and storage of multiple images simultaneously and multimode scan generation. System software provides easy scan control, image digitization, automatic prescale adjust on acquisition, grey scale histogram generation, grey scale manipulation, image filtering, smoothing, and random color assignment to grey levels. PMID:6762647

Hardy, W; Vance, J; Jones, K; Kokubo, Y

1982-01-01

438

Implementation of a Radiology Electronic Imaging Network: The community teaching hospital experience  

Microsoft Academic Search

Because of their typically small in-house computer and network staff, non-university hospitals often hesitate to consider\\u000a picture archiving and communication system (PACS) as a solution to the very demanding financial, clinical, and technological\\u000a needs of today’s Radiology Department. This article presents the experiences of the 3-year process for the design and implementation\\u000a of the Radiology Electronic Imaging Network (REIN) in

Manuel Arreola; Harvey L. Neiman; Amy Sugarman; Larry Laurenti; Ron Forys

1997-01-01

439

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

PubMed

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

LaBerge, Jeanne M; Andriole, Katherine P

2003-11-01

440

Digital processing of side-scan sonar data with the Woods Hole image processing system software  

USGS Publications Warehouse

Since 1985, the Branch of Atlantic Marine Geology has been involved in collecting, processing and digitally mosaicking high and low-resolution side-scan sonar data. Recent development of a UNIX-based image-processing software system includes a series of task specific programs for processing side-scan sonar data. This report describes the steps required to process the collected data and to produce an image that has equal along- and across-track resol

Paskevich, Valerie F.

1992-01-01

441

Neural networks in signal and image processing  

Microsoft Academic Search

Neural network (NN) research has gone a long way in the past decade. NNs now consist of many thousands of highly interconnected processing elements that can encode, store and recall relationships between different patterns by altering the weighting coefficients of inputs in a systematic way. Although they can generate reasonable outputs from unknown input patterns, and they can tolerate a

Evangelia Micheli-Tzanakou

1996-01-01

442

Multispectral image processing for environmental monitoring  

Microsoft Academic Search

New techniques are described for detecting environmental anomalies and changes using multispectral imagery. Environmental anomalies are areas that do not exhibit normal signatures due to man-made activities and include phenomena such as effluent discharges, smoke plumes, stressed vegetation, and deforestation. A new region-based processing technique is described for detecting these phenomena using Landsat TM imagery. Another algorithm that can detect

Mark J. Carlotto; Mark B. Lazaroff; Mark W. Brennan

1993-01-01

443

Imaging Implicit Morphological Processing: Evidence from Hebrew  

Microsoft Academic Search

Is morphology a discrete and independent element of lexical structure or does it simply reflect a fine-tuning of the system to the statistical correlation that exists among orthographic and semantic properties of words? Hebrew provides a unique opportunity to examine morphological processing in the brain because of its rich morphological system. In an fMRI masked priming experiment, we investigated the

Atira S. Bick; Ram Frost; Gadi Goelman

2010-01-01

444

Multichannel image processing system for thermal supervision systems  

NASA Astrophysics Data System (ADS)

Foundation principles of multichannel real-time information processing system which is solving a problem of automatic object tracking are considered in this work. Image processing algorithms which are used for three-channel system foundation and optimally approaching for system core-Microprocessor Neuro Matrix NM6403 are realized. Information processing is accomplished with using of Hopfield neural network one 384x288 frame processing time is about 100...140 ms.

Zorin, A. A.; Razumova, I. I.; Tarkov, V. A.

2005-06-01

445

Optimizing the processing and presentation of PPCR imaging  

NASA Astrophysics Data System (ADS)

Photostimulable phosphor computed radiography (CR) is becoming an increasingly popular image acquisition system. The acceptability of this technique, both diagnostically, ergonomically and economically is highly influenced by the method by which the image data is presented to the user. Traditional CR systems utilize an 11' by 14' film hardcopy format, and can place two images per exposure onto this film, which does not correspond to sizes and presentations provided by conventional techniques. It is also the authors' experience that the image enhancement algorithms provided by traditional CR systems do not provide optimal image presentation. An alternative image enhancement algorithm was developed, along with a number of hardcopy formats, designed to match the requirements of the image reporting process. The new image enhancement algorithm, called dynamic range reduction (DRR), is designed to provide a single presentation per exposure, maintaining the appearance of a conventional radiograph, while optimizing the rendition of diagnostically relevant features within the image. The algorithm was developed on a Sun SPARCstation, but later ported to a Philips' EasyVisionRAD workstation. Print formats were developed on the EasyVision to improve the acceptability of the CR hardcopy. For example, for mammographic examinations, four mammograms (a cranio-caudal and medio-lateral view of each breast) are taken for each patient, with all images placed onto a single sheet of 14' by 17' film. The new composite format provides a more suitable image presentation for reporting, and is more economical to produce. It is the use of enhanced image processing and presentation which has enabled all mammography undertaken within the general infirmary to be performed using the CR/EasyVisionRAD DRR/3M 969 combination, without recourse to conventional film/screen mammography.

Davies, Andrew G.; Cowen, Arnold R.; Parkin, Geoff J.; Bury, Robert F.

1996-03-01

446

Photographic Images as an Interactive Online Teaching Technology: Creating Online Communities  

ERIC Educational Resources Information Center

|Creating a sense of community in the online classroom is a challenge for educators who teach via the Internet. There is a growing body of literature supporting the importance of the community construct in online courses (Liu, Magjuka, Curtis, & Lee, 2007). Thus, educators are challenged to develop and implement innovative teaching technologies…

Perry, Beth; Dalton, Janice; Edwards, Margaret

2009-01-01

447

Data Processing of MIPSGAL 70 Micron Images  

NASA Astrophysics Data System (ADS)

We describe the modifications and enhancements that we have made to the standard SSC pipeline produced, 70 micron basic calibrated data (BCDs) for the MIPSGAL survey. The high background levels and large number of saturating sources in the observed portion of the Galactic plane create large variations in the responsivity of the Ge:Ga detectors used in the MIPS instrument. We detail how we reprocess the stimulator solutions using the GeRT software provided by the MIPS instrument team. The stim-corrected data have then a delta flat field applied to correct for short term responsivity variations. We explore several methods of destriping the data on a scan to scan level. A globally derived gain correction appears to be the best solution although a wavelet based destriper also retrieves good results. The photometry is checked by comparing the resulting mosaic images to IRIS reprocessed 60 micron data (Miville-Deschenes & Lagache 2005; ApJSS, 157, 302). Over most of the dynamic range of the data, the color-corrected MIPSGAL data agrees to 10% with IRIS. For the brightest regions, the values can be descrepant by 30% with a substantial fraction of the discrepancy due to the uncertainty in the color correction applied. 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.

Paladini, Roberta; Frayer, D.; Noriega-Crespo, A.; Carey, S.; Mizuno, D.; Shenoy, S.; Kramer, K.; Kuchar, T.; Marleau, F.; Price, S.; Padgett, D.; Ingalls, J.

2006-12-01

448

Craft, Process and Art: Teaching and Learning Music Composition in Higher Education  

ERIC Educational Resources Information Center

|This paper explores models of teaching and learning music composition in higher education. It analyses the pedagogical approaches apparent in the literature on teaching and learning composition in schools and universities, and introduces a teaching model as: learning from the masters; mastery of techniques; exploring ideas; and developing voice.…

Lupton, Mandy; Bruce, Christine

2010-01-01

449

Experiential Learning Process: Exploring Teaching and Learning of Strategic Management Framework through the Winter Survival Exercise  

Microsoft Academic Search

This article examines an attempt to introduce experiential learning methods in a business strategy course. In organizational behavior and industrial\\/organizational psychology, experiential teaching methods have been so widely adopted that some authors have suggested dropping the distinction between experiential and traditional teaching. Although intuitively appealing, experiential methods have not yet become popular among professors teaching strategy to traditional-age undergraduate students.

Maheshkumar P. Joshi; Elizabeth B. Davis; Ravi Kathuria; C. Ken Weidner

2005-01-01

450

Fractal-based image processing for mine detection  

NASA Astrophysics Data System (ADS)

A fractal-based analysis algorithm has been developed to perform the task of automated recognition of minelike targets in side scan sonar images. Because naturally occurring surfaces, such as the sea bottom, are characterized by irregular textures they are well suited to modeling as fractal surfaces. Manmade structures, including mines, are composed of Euclidean shapes, which makes fractal-based analysis highly appropriate for discrimination of mines from a natural background. To that end, a set of fractal features, including fractal dimension, was developed to classify image areas as minelike targets, nonmine areas, or clutter. Four different methods of fractal dimension calculation were compared and the Weierstrass function was used to study the effect of various signal processing procedures on the fractal qualities of an image. The difference in fractal dimension between different images depends not only on the physical features extant in the images but in the underlying statistical characteristics of the processing procedures applied to the images and the underlying mathematical assumptions of the fractal dimension calculation methods. For the image set studied, fractal-based analysis achieved a classification rate similar to human operators, and was very successful in identifying areas of clutter. The analysis technique presented here is applicable to any type of signal that may be configured as an image, making this technique suitable for multisensor systems.

Nelson, S. R.; Tuovila, Susan M.

1995-06-01

451

Dielectric barrier discharge image processing by Photoshop  

NASA Astrophysics Data System (ADS)

In this paper, the filamentary pattern of dielectric barrier discharge has been processed by using Photoshop, the coordinates of each filament can also be obtained. By using Photoshop two different ways have been used to analyze the spatial order of the pattern formation in dielectric barrier discharge. The results show that the distance of the neighbor filaments at U equals 14 kV and d equals 0.9 mm is about 1.8 mm. In the scope of the experimental error, the results from the two different methods are similar.

Dong, Lifang; Li, Xuechen; Yin, Zengqian; Zhang, Qingli

2001-09-01

452

Method of bioluminescence imaging for molecular imaging of physiological and pathological processes.  

PubMed

Molecular imaging has emerged as a powerful tool in basic, pre-clinical and clinical research for monitoring a variety of molecular and cellular processes in living organisms. Optical imaging techniques, mainly bioluminescence imaging, have extensively been used to study biological processes because of their exquisite sensitivity and high signal-to noise ratio. However, current applications have mainly been limited to small animals due to attenuation and scattering of light by tissues but efforts are ongoing to overcome these hurdles. Here, we focus on bioluminescence imaging by giving a brief overview of recent advances in instrumentation, current available reporter gene-reporter probe systems and applications such as cell trafficking, protein-protein interactions and imaging endogenous processes. PMID:19324090

Gheysens, Olivier; Mottaghy, Felix M

2009-03-24

453

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

Microsoft Academic Search

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

ADRIAN STERN; BAHRAM JAVIDI

2006-01-01

454

Image Processing Tools for the Enhancement of Concealed Weapon Detection  

Microsoft Academic Search

A number of technologies are being developed for Concealed Weapon Detection (CWD). Use of appropriate processing techniques will be very important to the success of such technologies. This article describes digital image processing procedures currently being investigated to enhance the detection of weapons concealed underneath clothing

Mohamed-adel Slamani; Pramod K. Varshney; Raghuveer M. Rao; Mark G. Alford; David Ferris

1999-01-01

455

Advanced image processing for defect visualization in infrared thermography  

Microsoft Academic Search

Results of a defect visualization process based on pulse IR thermography are presented. Algorithms have been developed to reduce the amount of operator participation required in the process of interpreting thermographic images. The algorithms determine the defect's depth and size from the temporal and spatial thermal distributions that exist on the surface of the investigated object following thermal excitation. A

Yuri A. Plotnikov; William P. Winfree

1998-01-01

456

Advanced image processing for defect visualization in infrared thermography  

Microsoft Academic Search

Results of a defect visualization process based on pulse infrared thermography are presented. Algorithms have been developed to reduce the amount of operator participation required in the process of interpreting thermographic images. The algorithms determine the defect's depth and size from the temporal and spatial thermal distributions that exist on the surface of the investigated object following thermal excitation. A

Yuri A. Plotnikov; William P. Winfree

1998-01-01

457

Programming of homogeneous computing structures for image processing  

NASA Astrophysics Data System (ADS)

This paper describes homogeneous computing structures, which are like systolic arrays and can be used for designing efficient special purpose architectures and programmable specialized hardware accelerators for signal and image processing. The process of data execution in homogeneous computing structures is considered. The program for simulation of homogeneous computing structure and the programming system IMPL are described.

Lutsyk, Andrij Y.

1997-07-01

458

Image processing for distance diagnosis in pest management  

Microsoft Academic Search

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

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

2004-01-01

459

Night vision imaging spectrometer (NVIS) processing and viewing tools  

Microsoft Academic Search

The US Army's Night Vision and Electronic Sensors Directorate (NVESD) has developed software tools for processing, viewing, and analyzing hyperspectral data. The tools were specifically developed for use with the U.S. Army's NVESD Night Vision Imaging Spectrometer (NVIS), but they can also be used to process hyperspectral data in a variety of other formats. The first of these tools is

Christopher G. Simi; Roberta Dixon; Michael J. Schlangen; Edwin M. Winter; Christopher LaSota

2001-01-01

460

Microscopic image processing systems for measuring nonuniform film thickness profiles  

Microsoft Academic Search

In very thin liquid films. transport processes are controlled by the temperature and the interfacial intermolecular force field which is a function of the film thickness profile and interfacial properties. The film thickness profile and interfacial properties can be measured most efficiently using a microscopic image processing system. IPS, to record the intensity pattern of the reflected light from the

A. H. Liu; J. L. Plawsky; S. DasGupta; P. C. Jr. Wayner

1994-01-01

461

A comparison of polarization image processing across different platforms  

NASA Astrophysics Data System (ADS)

Division-of-focal-plane (DoFP) polarimeters for the visible spectrum hold the promise of being able to capture both the angle and degree of linear polarization in real-time and at high spatial resolution. These sensors are realized by monolithic integration of CCD imaging elements with metallic nanowire polarization filter arrays at the focal plane of the sensor. These sensors capture large amounts of raw polarization data and present unique computational challenges as they aim to provide polarimetric information at high spatial and temporal resolutions. The image processing pipeline in a typical DoFP polarimeter is: per-pixel calibration, interpolation of the four sub-sampled polarization pixels, Stokes parameter estimation, angle and degree of linear polarization estimation, and conversion from polarization domain to color space for display purposes. The entire image processing pipeline must operate at the same frame rate as the CCD polarization imaging sensor (40 frames per second) or higher in order to enable real-time extraction of the polarization properties from the imaged environment. To achieve the necessary frame rate, we have implemented and evaluated the image processing pipeline on three different platforms: general purpose CPU, graphics processing unit (GPU), and an embedded FPGA. The computational throughput, power consumption, precision and physical limitations of the implementations on each platform are described in detail and experimental data is provided.

York, Timothy; Powell, Samuel; Gruev, Viktor

2011-09-01

462

Attenuation of half-tone background detail from fingermark images using digital image processing techniques  

Microsoft Academic Search

Frequency domain processing of fingermark images is valuable for reducing interfering periodic backgrounds. The success of the processing and the quality of the results depend upon a number of factors including structure and chosen processing method. This paper shows that in some circumstances it is possible to determine the most appropriate frequency domain filter for attenuation of interfering backgrounds using

Pacila M. Fabrizi; Simon K. Bramble; G. R. Jackson

1995-01-01

463

Hazard detection on runways using image processing techniques  

NASA Astrophysics Data System (ADS)

With the tremendous increase in the number of air passengers in the past years, aviation safety has been of utmost importance. At any given point of time, there will be several flights lining up for landing. Landing in good visibility conditions is not a problem. However, the problem arises when we have poor visibility conditions, especially foggy conditions. The pilot finds it difficult to land the flight in poor visibility conditions because of the difficulty to spot the runway clearly. This paper presents a novel method for detecting the runways and hazards on it in poor visibility conditions using image processing techniques. The first step is to obtain the images of a runway on a clear day and compute the smoothness coefficient followed by edge detection, using the SUSAN edge detection algorithm and then finally develop a database of the smoothness coefficients and edge detected images. Now, for the foggy images we compute the smoothness coefficient. Typically, foggy images have low contrast. Hence, before we perform edge detection, we enhance the image using Multi-Scale Retinex (msr). msr provides the low contrast enhancement and color constancy, required to enhance foggy images, by performing non-linear spatial/spectral transforms. After enhancement, the next step is to run the same edge detection algorithm with appropriate thresholds. Finally we determine a hazard by comparing the edge detected images of images taken under clear and foggy conditions. The paper also compares the results of the SUSAN edge detection algorithm with the state of art edge detection techniques.

Rajput, Girish Singh; Rahman, Zia-ur

2008-05-01

464

Self-Evaluating in Teaching Process as a Factor of Improved Engagement and Success of the Pupils  

NASA Astrophysics Data System (ADS)

Psychological and motivational factors are very important for work in general, and also for engagement in teaching process. The goal of introduction of the self-evaluating list into the schools is to motivate as large as possible number of pupils to be active in the class. The whole concept of the list lies in its application: it emphasizes the role of the pupils and their own evaluation of work and engagement during the teaching process. In this article we present main results of investigation concerning the application the SEL (self-evaluating list) in the some primary schools in Nis.

Misic, T.; Nesic, Lj.; Djordjevic, G.

2007-04-01

465

Focal-Plane Processing Architectures for Real-Time Hyperspectral Image Processing  

Microsoft Academic Search

Real-time image processing requires high computational and IyO throughputs obtained by use of opto- electronic system solutions. A novel architecture that uses focal-plane optoelectronic-area IyO with a fine-grain, low-memory, single-instruction-multiple-data ~SIMD! processor array is presented as an efficient computational solution for real-time hyperspectral image processing. The architecture is eval- uated by use of realistic workloads to determine data throughputs, processing

Sek M. Chai; Antonio Gentile; Wilfredo E. Lugo-Beauchamp; Javier Fonseca; D. Scott Wills

2000-01-01

466

CT discrimination and image process on damage process of unsaturated compacted loess during triaxial creep  

NASA Astrophysics Data System (ADS)

The triaxial creep compression tests of compacted loess samples are conducted with a new set of modified triaxial compression apparatus. With the new apparatus, the loess sample can be scanned with CT machine at the same time during compression process. The different damage process of compacted loess sample is directly observed for the first time with CT images and CT numbers. The initiation mechanisms of loess micro-crack during different creep compression processes are analyzed with CT images.

Li, Xiaojun; Jiang, Lihua; Tang, Yichuan

2010-08-01

467

Dehydration process of fish analyzed by neutron beam imaging  

NASA Astrophysics Data System (ADS)

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.

Tanoi, K.; Hamada, Y.; Seyama, S.; Saito, T.; Iikura, H.; Nakanishi, T. M.

2009-06-01

468

The Write Way: Tips for Teaching the Writing Process to Resistant Writers.  

ERIC Educational Resources Information Center

|This article presents practical and specific strategies for helping students with writing difficulties become successful in each of the following stages of the writing process: prewriting, writing, revising, and publishing. Recommendations include using visual images, modeling prewriting procedures, providing word banks, providing a…

Marchisan, Marti L.; Alber, Sheila R.

2001-01-01

469

Implementation of a radiology electronic imaging network: the community teaching hospital experience.  

PubMed

Because of their typically small in-house computer and network staff, non-university hospitals often hesitate to consider picture archiving and communication system (PACS) as a solution to the very demanding financial, clinical, and technological needs of today's Radiology Department. This article presents the experiences of the 3-year process for the design and implementation of the Radiology Electronic Imaging Network (REIN) in the Department of Radiology at The Western Pennsylvania Hospital (WPH). WPH embarked on this project in late 1994 to find a solution to the very pressing demands to reduce operating costs and improve service to primary care clinicians, both on-site and at WPH-affiliated clinics. A five-member committee consisting of in-house medical, administrative, information services, and medical physics staff was formed to design a network that would satisfy specific needs of WPH by using a phased mini-PACS approach and to select the various vendors to implement it. Suppliers for individual mini-PACS were selected to provide modality-specific solutions. For the backbone network, vendors were evaluated based on their technological progress, competence and resources, the commitment of the company to the imaging network business, and their willingness to embark on a mid-sized PACS project such as this. Based on patient volume, workflow patterns, and image quality requirements, the committee produced proposals detailing number and location of workstations, short- and long-term memory requirements, and so on. Computed tomography/magnetic resonance imaging, computer radiography, ultrasound, nuclear medicine, digital fluoroscopy, and angiography mini-PACS have been implemented over the past 2 years, and most of these are already integrated into the main REIN. This article presents detailed information concerning the design, selection and implementation processes, including storage requirement calculations. This indicates that PACS implementation is achievable for community hospitals with small computer, networking, and physics departments. Also presented are recommendations concerning design and vendor selection, that may be helpful for similar institutions. PMID:9268864

Arreola, M; Neiman, H L; Sugarman, A; Laurenti, L; Forys, R

1997-08-01

470

Use of homogeneous neuron-like media for image processing  

SciTech Connect

A homogeneous neuron-like medium with close nonlocal coupling between the positive center and the negative surroundings is used for image processing. The input image is transformed into a stationary structure dependent on the form, of the coupling function and the type of the element`s response to external action. Using the idea of plausible activity structures, we can determine the model parameters needed to extract the features of the medium such as the contour, the lines of definite direction, the ends of lines, the central axes of the image, the negative, the points of intersection of lines, the texture boundaries, and the objects of definite scale as well as the parameters that permit reconstruction of broken lines, smoothing of lines, automatic determination of image scales, and binarization of the initial image by a medium with a tunable coupling function.

Nuidel, I.V.; Kuznetsov, S.O.

1995-02-01

471

Image processing with Maple for simplified analysis in scanning microscopy  

NASA Astrophysics Data System (ADS)

The images provided by a scanning microscopes show diffraction patterns product of the scanning mechanism. Those are complicated to analyze without computational help, I tried to find a simple way to make it easier, applying an automatic method. I have used some of the tools included in the image processing toolbox of Maple to analyze patterns which are commonly found in the images provided by the scanning microscopes, to make interpretation easier for the ones that want to analyze the image. I consider that, for how simple and opened it is, the method I developed may be useful for the people interested in the applications and further research related to analyzing scanning microscope images.

Mesa, Alejandro

2012-05-01

472

Graphical Technique to Support the Teaching/Learning Process of Software Process Reference Models  

NASA Astrophysics Data System (ADS)

In this paper, we propose a set of diagrams to visualize software process reference models (PRM). The diagrams, called dimods, are the combination of some visual and process modeling techniques such as rich pictures, mind maps, IDEF and RAD diagrams. We show the use of this technique by designing a set of dimods for the Mexican Software Industry Process Model (MoProSoft). Additionally, we perform an evaluation of the usefulness of dimods. The result of the evaluation shows that dimods may be a support tool that facilitates the understanding, memorization, and learning of software PRMs in both, software development organizations and universities. The results also show that dimods may have advantages over the traditional description methods for these types of models.

Espinosa-Curiel, Ismael Edrein; Rodríguez-Jacobo, Josefina; Fernández-Zepeda, José Alberto

473

Application of Digital Image Processing Methods for Portal Image Quality Improvement  

SciTech Connect

The different processing methods which could increase the contrast (unsharp mask, histogram equalization, and deconvolution) and reduce noise (median filter) were analysed. An application which allows the importation of BeamView files (ACR-NEMA 2.0 format) and the application of the above mentioned methods were developed. The main objective was to obtain the most accurate comparison of Beamview images with Digitally Received Radiograms. The preliminary results of image processing methods are presented.

Gorlachev, G. E. [Radiology Department, N.N. Burdenko Neurosurgical Institute, Moscow (Russian Federation); Kosyrev, D. S. [Radiology Department, N.N. Burdenko Neurosurgical Institute, Moscow (Russian Federation); Medical Physics Department, Moscow Engineering Physical Institute (Russian Federation)

2007-11-26

474

Near-real-time satellite image processing: metacomputing in CC++  

Microsoft Academic Search

Metacomputing combines heterogeneous system elements in a seamless computing service. In this case study, we introduce the elements of metacomputing and describe an application for cloud detection and visualization of infrared and visible-light satellite images. The application processes the satellite images by using Compositional C++ (CC++)-a simple, yet powerful extension of C++-and its runtime system, Nexus, to integrate specialized resources,

Craig A. Lee; Carl Kesselman; Stephen Schwab

1996-01-01

475

Fast Binary Image Processing Using Binary Decision Diagrams  

Microsoft Academic Search

Abstract: Many classical image processing tasks can be realized as evaluations of a boolean function over subsets of an image. For instance, the simplicity test used in 3D thinning re- quires examining,the 26 neighbors of each voxel and computing,a single boolean function of these inputs. In this article, we show how Binary Decision Diagrams can be used to pro- duce

Luc Robert; Gre goire Malandain; Projets Robotvis; E pidaure

476

Image Processing Algorithms for Digital Mammography: A Pic  

Microsoft Academic Search

Digital mammography systems allow manipulation of fine differences in im- age contrast by means of image processing algorithms. Different display algo- rithms have advantages and disadvantages for the specific tasks required in breast imaging--diagnosis and screening. Manual intensity windowing can produce digital mammograms very similar to standard screen-film mammo- grams but is limited by its operator dependence. Histogram-based intensity windowing

Etta D. Pisano; B. ColeBradley; M. Hemminger; Martin J. Yaffe; R. Aylward; D. A. Maidment; B. Williams; Loren T. Niklason; F. Conant; L. Fajardo; Daniel B. Kopans; E. BrownStephen; M. Pizer

2000-01-01

477

Eye-Gaze Tracking Research Based on Image Processing  

Microsoft Academic Search

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

Tao Liu; Changle Pang

2008-01-01

478

Surface Distresses Detection of Pavement Based on Digital Image Processing  

Microsoft Academic Search

\\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

Aiguo Ouyang; Chagen Luo; Chao Zhou

2010-01-01

479

Design and image processing for tactile endoscope system  

NASA Astrophysics Data System (ADS)

We have developed new type tactile endoscope with silicone rubber membrane. The system consists of silicone rubber membrane, image sensor and illumination system. A surface of the Silicone rubber membrane has any patterns which made by nanotechnology. This pattern is deformed by pressing tissue such as cancer, colon and so on. The deformed pattern is captured by image sensor. This pattern is analyzed by image processing. In this paper, the proposed architecture is presented. With several test targets, the characteristics of the prototype systems are evaluated in the computation simulation.

Yamada, Kenji; Susuki, Yuto; Nagakura, Toshiaki; Ishihara, Ken; Ohno, Yuko

2010-08-01

480

Crystallographic phase retrieval through image processing under constraints  

NASA Astrophysics Data System (ADS)

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.

Zhang, Kam Y.

1993-11-01

481

Application of digital image processing method for fish age estimation  

NASA Astrophysics Data System (ADS)

In this paper, the study results on the fish age estimation issues, as an application of the method of digital image processing, presented by analysis from otolith image. First, a kind of Artificial Neural Network (ANN), the Pulse- coupled Neural Networks (PCNN), is proposed, and used to identify the different summer or winter year-rings patterns. Second, a well-founded approach, using morphological features, is brought forwand to automatically detect the nucleus within the otolith images. Finally, the Morphological Method is used to deduce the fish's age. The results of this paper maybe significant in fishery research, and the methods can be used in other biologic features identify fields.

Wu, Ting-wan; Hong, Jian-hua

2008-10-01

482

Real-time microstructural and functional imaging and image processing in optical coherence tomography  

NASA Astrophysics Data System (ADS)

Optical Coherence Tomography (OCT) is a noninvasive optical imaging technique that allows high-resolution cross-sectional imaging of tissue microstructure, achieving a spatial resolution of about 10 mum. OCT is similar to B-mode ultrasound (US) except that it uses infrared light instead of ultrasound. In contrast to US, no coupling gel is needed, simplifying the image acquisition. Furthermore, the fiber optic implementation of OCT is compatible with endoscopes. In recent years, the transition from slow imaging, bench-top systems to real-time clinical systems has been under way. This has lead to a variety of applications, namely in ophthalmology, gastroenterology, dermatology and cardiology. First, this dissertation will demonstrate that OCT is capable of imaging and differentiating clinically relevant tissue structures in the gastrointestinal tract. A careful in vitro correlation study between endoscopic OCT images and corresponding histological slides was performed. Besides structural imaging, OCT systems were further developed for functional imaging, as for example to visualize blood flow. Previously, imaging flow in small vessels in real-time was not possible. For this research, a new processing scheme similar to real-time Doppler in US was introduced. It was implemented in dedicated hardware to allow real-time acquisition and overlayed display of blood flow in vivo. A sensitivity of 0.5mm/s was achieved. Optical coherence microscopy (OCM) is a variation of OCT, improving the resolution even further to a few micrometers. Advances made in the OCT scan engine for the Doppler setup enabled real-time imaging in vivo with OCM. In order to generate geometrical correct images for all the previous applications in real-time, extensive image processing algorithms were developed. Algorithms for correction of distortions due to non-telecentric scanning, nonlinear scan mirror movements, and refraction were developed and demonstrated. This has led to interesting new applications, as for example in imaging of the anterior segment of the eye.

Westphal, Volker

483

Image processing algorithms for digital mammography: a pictorial essay.  

PubMed

Digital mammography systems allow manipulation of fine differences in image contrast by means of image processing algorithms. Different display algorithms have advantages and disadvantages for the specific tasks required in breast imaging-diagnosis and screening. Manual intensity windowing can produce digital mammograms very similar to standard screen-film mammograms but is limited by its operator dependence. Histogram-based intensity windowing improves the conspicuity of the lesion edge, but there is loss of detail outside the dense parts of the image. Mixture-model intensity windowing enhances the visibility of lesion borders against the fatty background, but the mixed parenchymal densities abutting the lesion may be lost. Contrast-limited adaptive histogram equalization can also provide subtle edge information but might degrade performance in the screening setting by enhancing the visibility of nuisance information. Unsharp masking enhances the sharpness of the borders of mass lesions, but this algorithm may make even an indistinct mass appear more circumscribed. Peripheral equalization displays lesion details well and preserves the peripheral information in the surrounding breast, but there may be flattening of image contrast in the nonperipheral portions of the image. Trex processing allows visualization of both lesion detail and breast edge information but reduces image contrast. PMID:10992035

Pisano, E D; Cole, E B; Hemminger, B M; Yaffe, M J; Aylward, S R; Maidment, A D; Johnston, R E; Williams, M B; Niklason, L T; Conant, E F; Fajardo, L L; Kopans, D B; Brown, M E; Pizer, S M

484

Positron emission tomography provides molecular imaging of biological processes  

PubMed Central

Diseases are biological processes, and molecular imaging with positron emission tomography (PET) is sensitive to and informative of these processes. This is illustrated by detection of biological abnormalities in neurological disorders with no computed tomography or MRI anatomic changes, as well as even before symptoms are expressed. PET whole body imaging in cancer provides the means to (i) identify early disease, (ii) differentiate benign from malignant lesions, (iii) examine all organs for metastases, and (iv) determine therapeutic effectiveness. Diagnostic accuracy of PET is 8–43% higher than conventional procedures and changes treatment in 20–40% of the patients, depending on the clinical question, in lung and colorectal cancers, melanoma, and lymphoma, with similar findings in breast, ovarian, head and neck, and renal cancers. A microPET scanner for mice, in concert with human PET systems, provides a novel technology for molecular imaging assays of metabolism and signal transduction to gene expression, from mice to patients: e.g., PET reporter gene assays are used to trace the location and temporal level of expression of therapeutic and endogenous genes. PET probes and drugs are being developed together—in low mass amounts, as molecular imaging probes to image the function of targets without disturbing them, and in mass amounts to modify the target's function as a drug. Molecular imaging by PET, optical technologies, magnetic resonance imaging, single photon emission tomography, and other technologies are assisting in moving research findings from in vitro biology to in vivo integrative mammalian biology of disease.

Phelps, Michael E.

2000-01-01

485

Digital image processing: a primer for JVIR authors and readers: Part 3: Digital image editing.  

PubMed

This is the final installment of a three-part series on digital image processing intended to prepare authors for online submission of manuscripts. In the first two articles of the series, the fundamentals of digital image architecture were reviewed and methods of importing images to the computer desktop were described. In this article, techniques are presented for editing images in preparation for online submission. A step-by-step guide to basic editing with use of Adobe Photoshop is provided and the ethical implications of this activity are explored. PMID:14654480

LaBerge, Jeanne M; Andriole, Katherine P

2003-12-01

486

Detection of ash fusion temperatures based on the image processing  

NASA Astrophysics Data System (ADS)

The detection of ash fusion temperatures is important in the research of coal characteristics. The prevalent method is to build up ash cone with some dimension and detect the characteristic temperatures according to the morphological change. However, conditional detection work is not accurate and brings high intensity of labor as a result of both visualization and real-time observation. According to the insufficiency of conventional method, a new method to determine ash fusion temperatures with image processing techniques is introduced in this paper. Seven techniques (image cutting, image sharpening, edge picking, open operation, dilate operation, close operation, geometrical property extraction) are used in image processing program. The processing results show that image sharpening can intensify the outline of ash cone; Prewitt operator may extract the edge well among many operators; mathematical morphology of image can filter noise effectively while filling up the crack brought by filtration, which is useful for further disposal; characteristic temperatures of ash fusion temperatures can be measured by depth-to-width ratio. Ash fusion temperatures derived from this method match normal values well, which proves that this method is feasible in detection of ash fusion temperatures.

Li, Peisheng; Yue, Yanan; Hu, Yi; Li, Jie; Yu, Wan; Yang, Jun; Hu, Niansu; Yang, Guolu

2007-11-01

487

Image processing techniques in computer-assisted patch clamping  

NASA Astrophysics Data System (ADS)

Patch clamping is used in electrophysiology to study single or multiple ion channels in cells. Multiple micropipettes are used as electrodes to collect data from several cells. Placement of these electrodes is a time consuming and complicated task due to the lack of depth perception, limited view through the microscope lens and the possibility of collisions between micro-pipettes. To aid in this process, a computer-assisted approach is developed using image processing techniques applied to images obtained through the microscope. Image processing algorithms are applied to perform autofocusing, relative depth estimation, distance estimation and tracking of the micro-pipettes in the images without making any major changes in the existing patch clamp equipment. An autofocusing algorithm with a micrometer precision is developed and the relative depth estimation is performed based on autofocusing. A micro-pipette tip detection algorithm is developed which can be used to initialize or reset the tracking algorithm and to calibrate the system by registering the relative image and micro-manipulator coordinates. An image-based tracking algorithm is also developed to track a micro-pipette tip in real time. The real-time tracking data is then used for visual servoing the micro-pipette tips and updating the calibration information.

Azizian, Mahdi; Patel, Rajni; Gavrilovici, Cezar; Poulter, Michael O.

2010-02-01

488

[Who teaches queer: the prospect of queer theory analysis in the health education process].  

PubMed

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

Motta, Jose Inácio Jardim; Ribeiro, Victória Maria Brant

2013-06-01

489

Optical Fourier techniques for medical image processing and phase contrast imaging  

NASA Astrophysics Data System (ADS)

This paper briefly reviews the basics of optical Fourier techniques (OFT) and applications for medical image processing as well as phase contrast imaging of live biological specimens. Enhancement of microcalcifications in a mammogram for early diagnosis of breast cancer is the main focus. Various spatial filtering techniques such as conventional 4f filtering using a spatial mask, photoinduced polarization rotation in photosensitive materials, Fourier holography, and nonlinear transmission characteristics of optical materials are discussed for processing mammograms. We also reviewed how the intensity dependent refractive index can be exploited as a phase filter for phase contrast imaging with a coherent source. This novel approach represents a significant advance in phase contrast microscopy.

Yelleswarapu, Chandra S.; Kothapalli, Sri-Rajasekhar; Rao, D. V. G. L. N.

2008-04-01

490

Optical Fourier techniques for medical image processing and phase contrast imaging  

PubMed Central

This paper briefly reviews the basics of optical Fourier techniques (OFT) and applications for medical image processing as well as phase contrast imaging of live biological specimens. Enhancement of microcalcifications in a mammogram for early diagnosis of breast cancer is the main focus. Various spatial filtering techniques such as conventional 4f filtering using a spatial mask, photoinduced polarization rotation in photosensitive materials, Fourier holography, and nonlinear transmission characteristics of optical materials are discussed for processing mammograms. We also reviewed how the intensity dependent refractive index can be exploited as a phase filter for phase contrast imaging with a coherent source. This novel approach represents a significant advance in phase contrast microscopy.

Yelleswarapu, Chandra S.; Kothapalli, Sri-Rajasekhar; Rao, D.V.G.L.N.

2008-01-01

491

Software architecture for intelligent image processing using Prolog  

NASA Astrophysics Data System (ADS)

We describe a prototype system for interactive image processing using Prolog, implemented by the first author on an Apple Macintosh computer. This system is inspired by Prolog+, but differs from it in two particularly important respects. The first is that whereas Prolog+ assumes the availability of dedicated image processing hardware, with which the Prolog system communicates, our present system implements image processing functions in software using the C programming language. The second difference is that although our present system supports Prolog+ commands, these are implemented in terms of lower-level Prolog predicates which provide a more flexible approach to image manipulation. We discuss the impact of the Apple Macintosh operating system upon the implementation of the image-processing functions, and the interface between these functions and the Prolog system. We also explain how the Prolog+ commands have been implemented. The system described in this paper is a fairly early prototype, and we outline how we intend to develop the system, a task which is expedited by the extensible architecture we have implemented.

Jones, Andrew C.; Batchelor, Bruce G.

1994-10-01