There has been an increased interest in adaptive video quality control and dynamically adjusting the output video bit rate based on the status of the network. However, network-level performance parameters cannot accurately reflect the video quality perceived by the end users. Our goal is to investigate an adaptive ...

This paper presents a methodology and a framework for quality assessment of compressed video. Usage of the framework is illustrated by taking five source video clips, compressing them by two commercially available video encoders, and calculating four perceptual metrics for each encoded clip. The ...

The possibility of perceptual compression using live eye-tracking has been anticipated for some time by many researchers. Among the challenges of real-time eye-gaze based perceptual video compression is how to handle the fast nature of eye movements with a relative complexity of video transcoding and also take into ...

The Dysphonia Severity Index (DSI) is an objective multiparametric acoustic calculation of vocal function; however, its changes after thyroidectomy have not yet been described. Patient-reported symptoms, as well as auditory perceptual, acoustic, and video...

Efficient storage, transmission and use of video information are key requirements in many multimedia applications currently being addressed by MPEG-4. To fulfill these requirements, a new approach for representing video information which relies on an object-based representation, has been adopted. Therefore, ...

This paper presents an objective video quality evaluation method for quantifying the subjective quality of digital mobile video. The proposed method aims to objectify the subjective quality by extracting edgeness and blockiness parameters. To evaluate the performance of the proposed algorithms, we carried out subjective ...

Automatic methods to evaluate the perceptual quality of a digital video sequence have widespread applications wherever the end-user is a human. Several objective video quality assessment (VQA) algorithms exist, whose performance is typically evaluated using the results of a subjective study performed by the ...

This paper proposes a game theoretical rate control technique for video compression. Using a cooperative gaming approach, which has been utilized in several branches of natural and social sciences because of its enormous potential for solving constrained optimization problems, we propose a dual-level scheme to optimize the perceptual quality while ...

-term temporal consistency. To facilitate extraction and analysis of video contents, a video has to be first is available. Video analysis Video interpretation Video shot Pixels to video objects Video objects to ...

The development of digital video technology, due to its nature, introduced new approach to the objective video quality estimation. Basically there are two types of metrics for measuring the quality of digital video: purely mathematically defined video quality metrics (DELTA, MSAD, MSE, SNR and ...

Human vision system is very complex and has been studied for many years specifically for purposes of efficient encoding of visual, e.g. video content from digital TV. There have been physiological and psychological evidences which indicate that viewers do not pay equal attention to all exposed visual information, but only focus on certain areas known as focus of attention ...

The goal of this work is to develop a humanoid robot's perceptual mechanisms through the use of learning aids. We describe methods to enable learning on a humanoid robot using learning aids such as books, drawing materials, boards, educational videos or other children toys. Visual properties of objects are learned and inserted into a ...

With many visual speech animation techniques now available, there is a clear need for systematic perceptual evaluation schemes. We describe here our scheme and its application to a new video-realistic (potentially indistinguishable from real recorded vide...

We describe an implementation of an architecture for coding and compression of color motion video that is based upon the partition of the visual signal by ...

IMPACT OF THE RESOLUTION ON THE DIFFERENCE OF PERCEPTUAL VIDEO QUALITY BETWEEN CRT AND LCD Sylvain not present on mature CRT technology. In this paper, subjective tests are described which highlight a difference of perceptual video quality between CRT and liquid crystal displays. Moreover, it's observed

... objects in motion. We believe it is useful to query for all moving objects in a video or library of videos. In addition, it may ...

Professor Earl Miller discusses the hypothesis that an entire network of neurons are required to perceptually identify a single object.

First results in the effort of learning about representations of objects is presented. The questions

... Title : Real-Time Image Processing Architectures for Perceptual Grouping, Depth Segregation, and Object Recognition. Descriptive Note : Final rept. ...

A speech recognition system based on a perceptual respresentation of speech is presented. The objective is to study and investigate the recognition of connected speech composed of a context-free limited vocabulary. The generalization will permit vocabular...

... To compute object salience and to control gaze behaviors, we have developed a model called Dynamic Perceptual Attention (DPA). ...

Color analysis is frequently used in image/video retrieval. However, many existing color spaces and color distances fail to correctly capture color differences usually perceived by the human eye. The objective of this paper is to first highlight the limitations of existing color spaces and similarity measures in representing human perception of colors, and ...

Perceptual learning refers to experience-induced improvements in the pick-up of information. Perceptual constancy describes the fact that, despite variable sensory input, perceptual representations typically correspond to stable properties of objects. Here, we show evidence of a strong link between ...

A comparison and analysis of perceived and objective color appearance of distant objects in the Grand Canyon National Park reveals that there exist significant differences between them due to the effects of the perceptual transparency that has received relatively little attention in the past.

As more multimedia services have become increasingly available over networks where bandwidth is not always guaranteed, quality monitoring has become an important issue. For instance, quality of experience and quality monitoring have become important problems in internet protocol television applications, since transmission errors may introduce all kinds of additional video ...

With the advent of digital video and cinema media technologies, much more is possible in achieving brighter and more vibrant colors, colors that transcend our experience. The challenge is in the realization of these possibilities in an industry rooted in 1950s technology where color gamut is represented with little or no insight into the way an observer perceives color as a ...

A Perceptual Grouping Hierarchy for Appearance-Based 3D Object Recognition Andrea Selinger grouping to represent 3D objects in a form that allows not only recognition, but reasoning about 3D object recognition, and the role that perceptual grouping pro- cesses must play. The initial

Object-Video Streams for Preserving Privacy in Video Surveillance Faisal Z. Qureshi Faculty--This paper presents a framework for preserving privacy in video surveillance. Raw video is decomposed. Keywords-video surveillance; privacy; object-video streams; I. INTRODUCTION ...

Lossy video compression systems such as MPEG2 introduce picture impairments such as image blocking, color distortion and persistent color fragments, 'mosquito noise,' and blurring in their outputs. While there are video test clips which exhibit one or more of these distortions upon coding, there is need of a set of well-characterized test patterns and ...

Familiar arrays of objects are perceived better than novel arrays, indicating a perceptual bias toward expected inputs. Yet a novel object in an otherwise familiar array attracts attention, indicating a perceptual bias toward unexpected inputs. These phen...

Seeing and imagining the "same" objects in unilateral neglect Bourlon Cl mence� 1 , Pradat Bartolomeo Abstract Dissociations between perceptual and imaginal neglect). Here we report patients performance on imaginal and perceptual tasks which shared identical stimuli

In this paper, we present MediaNet, which is a knowledge representation framework that uses multimedia content for representing semantic and perceptual information. The main components of MediaNet include conceptual entities, which correspond to real world objects, and relationships among concepts. MediaNet allows the concepts and relationships to be ...

... possible combination were not significantly different with p ... There was no audio input and there were no top-down psycholinguistic cues given ...

... metrics for video quality; High-level codes for visual representations. Based on human perceptual and cognitive models; Application to digital libraries ...

... and competed in simulated war games against the ... theater without a solid mental model to ... Interactive video training of perceptual decision-making ...

... minimum: - video bandwidth - beam focus ... A computer color model was used to facilitate the attempt to maximize the perceptual dispersion ...

... High level object recognition without an inferior temporal lobe. ... Submitted to Journal of Experimental Psychology: Human Perception & Performance ...

A power-constrained contrast enhancement algorithm for emissive displays based on histogram equalization is proposed in this work. We first propose a log-based histogram modification scheme to reduce overstretching artifacts of the conventional histogram equalization technique. Then, we develop a power consumption model for emissive displays, and formulate an objective ...

In the last decade digital watermarking techniques have been devised to answer the ever-growing need to protect the intellectual property of digital still images, video sequences or audio from piracy attacks. Because of the proliferation of watermarking algorithms and their applications some benchmarks have been created in order to help watermarkers comparing their algorithms ...

Two experimental series are reported using both reaction time (RT) and a data-limited perceptual report to examine the effects of perceptual load on object-based attention. Perceptual load was manipulated across 3 levels by increasing the complexity of perceptual judgments. Data from the ...

In this work, we focus on automatic extraction of object boundaries from Canny edge field for the purpose of content-based indexing and retrieval over image and video databases. A multiscale approach is adopted where each successive scale provides further simplification of the image by removing more details, such as texture and noise, while keeping major ...

The Rapid Serial Visual Presentation (RSVP) protocol for EEG has recently been discovered as a useful tool for highthroughput filtering of images into simple target and nontarget categories [1]. This concept can be extended to the detection of objects and anomalies in images and videos that are of interest to the user (observer) in an applicationspecific ...

A new approach to machine-based visual perception of monocular images is presented and demonstrated. The approach employs a recursive procedure to generate a series of ''reconstructed'' versions of the raw video image. The procedure is designed to imitate certain perceptual organization functions of the human visual ...

The general goals and aims of this project were to evaluate the use of computer training software, and in particular action video games, as a tool to train and enhance perceptual skills, visual attention, and working memory capacities. The author's p...

Predictions from perceptual load theory (Lavie, 19952005) regarding object recognition across the same or different viewpoints were tested. Results showed that high perceptual load reduces distracter recognition levels despite always presenting distracter objects from the same view. They also showed that the levels ...

Predictions from perceptual load theory (Lavie, 1995, 2005) regarding object recognition across the same or different viewpoints were tested. Results showed that high perceptual load reduces distracter recognition levels despite always presenting distracter objects from the same view. They also showed that the ...

A rate control algorithm for logo insertion which does not require full decoding and encoding in compressed video is proposed. A perceptual approach is adopted in order to reduce the distortion introduced by the rate control. The start position of rate control is randomly varied for each frame so that the perceptual distortion is ...

objects INDEX TERMS: I.4.7 [Image Processing and Computer Vision]: Feature Measurement-Feature-shaped objects, where every object has several local and global features that are detectably visually as well. As a next step we tried to relate the dimensions of the perceptual spaces to object ...

Automatic Tracking of Moving Objects in Video for Surveillance Applications Manjunath Narayana certifies that this is the approved version of the following thesis: Automatic Tracking of Moving Objects for the field of se- curity. The task of reliably detecting and tracking moving objects in surveillance ...

A battery of seven psychomotor/perceptual tests was administered to two samples of Air Force personnel-Officer Trainees slated to attend undergraduate navigator training (UNT) and Airmen in 30 different career fields. The objective of the project was to d...

A series of 10 experiments examined the subjective variables involved in the perceptual organization of shapes and objects; in particular, the role played by (1) perceptual intentions, (2) structural knowledge, and (3) spatial attention. A series of exper...

This thesis presents a perceptual system for a humanoid robot that integrates abilities such as object localization and recognition with the deeper developmental machinery required to forge those competences out of raw physical experiences. It shows that ...

Adults have little difficulty perceiving objects as complete despite occlusion, but newborn infants perceive moving, partly occluded objects solely in terms of visible surfaces. The developmental mechanisms leading to perceptual completion have never been adequately explained. Here, we examine the potential contributions of oculomotor ...

Visual saliency based on orientation contrast is a perceptual product attributed to the functional organization of the mammalian brain. We examined this visual phenomenon in barn owls by mounting a wireless video microcamera on the owls' heads and confronting them with visual scenes that contained one differently oriented target among similarly oriented ...

temporal (News, via the CNN clips) and high temporal (via the Sports clips) video. For video clips, such as the ``talking heads'' in videoconferences or news broadcasts, has a low temporal aspect. Videos with low or missing frames. A video which has many differences between frames, such as clips of sporting events

. As an aside, we note that the majority of the literature on video games and violence/aggression have tested, B. J. (2007). The effect of video game violence on physiological desensitization to real of violence in video games. Person- ality and Social Psychology Bulletin, 35(2), 243�259. Pylyshyn, Z. W

To measure the limits on attentive tracking of continuously changing features, in our task objects constantly changed smoothly and unpredictably in orientation, spatial period or position. Observers reported the last state of one of the objects. We observed a gradual decline in performance as the number of tracked objects increased, ...

A video camera produces a video sequence including moving objects. A computer is adapted to process the video sequence, produce individual frames, and use a fast-adapting background subtraction model to validate the results of a slow-adapting background s...

on the existence of resonating physical objects (such as speakers, artifacts, animals, plants etc.). Sounds exist in a vacuum (where a sounding/resonating object is). This is an apparent violation) The perceptual identification of sounds relies on the perceptual recognition of the type of resonating ...

Much research has been undertaken in the area of streaming video across computer networks in general and the Internet in particular, but relatively little has been undertaken in the field of streaming 3-D wireframe animation. Despite superficial similarities, both being visual media, the two are significantly different. Different data passes across the network so loss affects ...

An interesting problem in analysis of video data concerns design of algorithms that detect perceptually significant features in an unsupervised manner, for instance methods of machine learning for automatic classification of human expression. A geometric formulation of this genre of problems could be modeled with help of perceptual ...

Research on the effects of perceptual manipulations on recognition memory has suggested that (a) recollection is selectively influenced by task-relevant information and (b) familiarity can be considered perceptually specific. The present experiment tested divergent assumptions that (a) perceptual features can influence conscious ...

Motion provides strong visual cues for the perception of shape and depth, as demonstrated by cognitive scientists and visual artists. This paper presents a novel visualization technique -- kinetic visualization -- that uses particle systems to add supplemental motion cues which can aid in the perception of shape and spatial relationships of static objects. Based on a set of ...

The perirhinal cortex (PRh) is widely accepted as having an important role in object recognition memory in humans and animals. Contrary to claims that PRh mediates declarative memory exclusively, previous evidence suggests that PRh has a role in the perceptual processing of complex objects. In the present study, we conducted an ...

BACKGROUNDImpaired face processing is a widely cited deficit in autism, and, although the origin of this deficit is unclear, several groups have suggested that a lack of perceptual expertise is contributory. We investigated whether individuals with autism develop expertise in visuoperceptual processing of faces and whether any decrement in such processing is specific to faces, ...

The present paper is devoted to the MPEG-4 AVC (a.k.a. H.264) video stream protection by means of watermarking techniques. The embedding process is carried out on quantized index domain and relies on the m-QIM (m-arry Quantisation Index Modulation) principles. In order to cope with the MPEG-4 AVC peculiarities, the Watson's perceptual model is reconsidered ...

. The framework is applied to compressing videos in surveillance and video phone domains. The pro- posed method in this regard include video telephony [2, 5], video surveillance [12, 19], and medical imaging [13, 17]. One. The framework is applied to both surveillance and video phone domains. ...

In this paper, we concentrate on video watermarking for forensics applications and consider the temporal synchronization problem, which has been overlooked in the literature so far. As a result, we propose a system that provides temporal synchronization in video watermarking by using side information at the receiver. Short ...

Human observers explore scenes by shifting their gaze from object to object. Before each eye movement, a peripheral glimpse of the next object to be fixated has however already been caught. Here we investigate whether the perceptual organization extracted from such a preview could guide the ...

In this paper we propose a method for tracking a video object in an ordered sequence of two-dimensional images, where the outcome is the trajectory of the video object throughout the time sequence of images. This method is designed to run in real-time in a synchronous video collaboration ...

Relevance Oriented Video Therapy (ROVT) uses technological enhancement to extend the psychotherapist's skill and reach. This is achieved by blending electronic technology with new therapeutic strategies to enhance and abbreviate psychotherapy. A microprocessor-based controller allows for the identification and retrieval of any one second long video frame ...

This paper presents an extensible architectural model for general content-based analysis and indexing of video data which can be customised for a given problem domain. Video interpretation is approached as a joint inference problem which can be solved through the use of modern machine learning and probabilistic inference techniques. An important aspect of ...

This chapter introduces a wireless, pervasive computing approach to adaptive therapeutic telegaming considered in the context of near set theory. Near set theory provides a formal basis for observation, comparison and classification of perceptual granules. A perceptual granule is defined by a collection of objects that are graspable by ...

One of the key aspects of videos is the temporal relationship between video frames. In this paper we propose a tree-based model for specifying the temporal semantics of video data. We present a unique wayofintegrating our video model into an object database management system which has ...

Apr 21, 2011 ... The astronauts reviewed their perceptual experiences in videotaped .... Study Types. Links + Shuttle Detailed Supplementary Objectives (DSO) ...

The document discusses the physical and psychological factors which produce a wide variety of perceptual distortions under water. The image of an underwater object is altered in apparent size and distance, its color and brightness are changed, and its out...

... Journal of Experimental Psy- cholo�y: Human Perception and Performance. ... High level object recognition without an inferior temporal lobe. ...

... An Apple microcomputer,. ... Objects presented on the display screen varied, i shape (triangle, rectangle, pentagon), color (red, green, white), size ...

... Additonal cues such as accretion/deletion of texture (not considered here) are ... a perceptually vivid, illusory white square in a field of black discs. ...

Ellis, S., Young, M., Adelstein, B., and Ehrlich, S. (1999) Discrimination of changes of latency during voluntary hand movement of virtual objects. ...

Previous research suggests that communication and performance in organizations are intertwined. This study examines the relationship of individual communication in formal organizations to both objective and perceptual assessments of performance. Results c...

... In order for sKEA to learn to recognize ... Our system learns categories of objects using SEQL ... SEQL is capable of quickly learning new generaliza ...

The perception of objects at such distances is of primary importance ...... perceptual centers in the occipital lobes of the cerebral cortex. ...

... breast lesions can be improved by integrating radiologists' perceptual expertise in ... project has 3 objectives: To combine radiologist-extracted Breast ...

In order to be able to perceive and recognize objects or surface properties of objects, one must be able to resolve the features. These perceptual tasks can be difficult for both graphical representations and real objects in augmented reality (AR) display...

. For this analysis, we chose low temporal (Infor� mation, via the Home Shopping clips), medium tempo� ral (News, via clips has been explored [GT98]. There has also been research done in classifying perceptual quality very few differences between most frames, such as a ``talking head'' in a videoconference or a news

A Watermark is a perceptually unobtrusive signal embedded in an image, an audio or video clip, or any other multimedia asset. Its purpose is to be a label which is holographically attached to the content. Moreover, it can only be removed by malicious and ...

following Mathematica (Wolfram, 1991) function, tilter[|ength_,scale_,corner_] : = Module[ {tmp,x}, .... Wolfram, S. (1991). Mathematica: A system for doing ...

This paper deals with the possible benefits of Perceptual Learning in Artificial Intelligence. On the one hand, Perceptual Learning is more and more studied in neurobiology and is now considered as an essential part of any living system. In fact, Perceptual Learning and Cognitive Learning are both necessary for learning and often ...

Mosaicing is largely dependent on the quality of registration among the constituent input images. Parallax and object motion present challenges to image registration, leading to artifacts in the result. To reduce the impact of these artifacts, traditional image mosaicing approaches often impose planar scene constraints, or rely on purely rotational camera motion or dense ...

Using an fMR-adaptation paradigm for different face morphing levels we have recently demonstrated a narrow neuronal tuning to faces even at the sub-exemplar level which was tightly related to perceptual discrimination (Gilaie-Dotan and Malach, 2007). However, it is unclear whether this relationship is unique to faces or is a general property of object ...

This study investigated the effects of video-based perceptual training on pattern recognition and pattern prediction ability in elite field sport athletes and determined whether enhanced perceptual skills influenced the physiological demands of game-based activities. Sixteen elite women soccer players (mean +/- SD age, 18.3 +/- 2.8 ...

A key function of the sense of smell is to guide organisms towards rewards and away from dangers. However, because relatively few volatile chemicals in the environment carry intrinsic biological value, the meaning of an odor often needs to be acquired through learning and experience. The tremendous perceptual and neural plasticity of the olfactory system provides a design that ...

Perceptual filling-in occurs when structures of the visual system interpolate information across regions of visual space where that information is physically absent. It is a ubiquitous and heterogeneous phenomenon, which takes place in different forms almost every time we view the world around us, such as when objects are occluded by other ...

In this paper, we propose a model for video metadata that supports video retrieval based on video content, video structure and/or video attributes. Our model supports video retrieval based on the relationships among videos and between ...

The objective of this activity was to record video that could be used for controlled evaluation of video image vehicle detection system (VIVDS) products and software upgrades to existing products based on a list of conditions that might be difficult to fi...

in Section 3. The algorithms used to track objects in the digital video and their implementation of this software is provided in Section 6. 2. DESIGN OF A VIDEO RECORDING STATION (VRS) The primary advantage of digital video analysis is the ability to automatically track vehicles and quantify the frequency of events

bandwidth video or activity meta data. Keywords: Video surveillance, tracking, detection, database, multi the development of intelligent systems tracking objects in surveil- lance video. Increasingly there is also repository. Having started to process surveillance video with computers, a whole ...

This handbook provides a users manual for the batch video quality metric (BVQM) tool. BVQM runs under the Windows XP operating system. BVQM performs objective automated quality assessments of processed video clip batches (i.e., as output by a video system...

... TITLE: TRANSFORMING INITIAL ENTRY TRAINING TO ... Behavioral objectives Competency - based education ... when a teenager plays video or ...

... categorize the object isolated by the target detection and extraction algorithms. ... The k-nearest neighbor approach is then used for the object ...

Measuring preferences for moving video quality is harder than for static images due to the fleeting and variable nature of moving video. Subjective preferences for image quality can be tested by observers indicating their preference for one image over another. Such pairwise comparisons can be analyzed using Thurstone scaling (Farrell, 1999). Thurstone ...

This site has three videos on X-ray binary systems, black hole M87, and neutron stars using either AVI or quicktime format. The videos are less than a minute long, but effectively portray these compact objects and how they behave.

The objective of this thesis is to study the performance of the MPEG- 4 video coding standard in the presence of highly erroneous media, such as a wireless channel, MPEG-4 treats video sequences as a collection of objects rather than a collection of frame...

Video compilation of videos on rapid prototyping with the following titles: * Stereolithography * Stereolithography * Stereolithography animation * Selective laser sintering * Fused deposition modeling * Layered object modeling * Layered object modeling * Speed part * Rapid injection mold tooling * Soft tooling

tracking, video annotation and query processing, presentation and summarization etc. Figure 1: Software features like object tracking, face detection, summarization tools and automatic annotation of videos based detection, object tracking, shot detection and audio video mixing. A presentation ...

Visual attention is often understood as a modulatory field acting at early stages of processing, but the mechanisms that direct and fit the field to the attended object are not known. We show that a purely spatial attention field propagating downward in the neuronal network responsible for perceptual organization will be reshaped, repositioned, and ...

The response properties of a class of motion detectors (Reichardt detectors) are investigated extensively here. Since the outputs of the detectors, responding to an image undergoing two-dimensional rigid translation, are dependent on both the image velocity and the image intensity distribution, they are nonuniform across the entire image, even though the object is moving ...

The response properties of a class of motion detectors (Reichardt detectors) are investigated extensively here. Since the outputs of the detectors, responding to an image undergoing two-dimensional rigid translation, are dependent on both the image velocity and the image intensity distribution, they are nonuniform across the entire image, even though the object is moving ...

Olfactory perceptual learning is a relatively long-term, learned increase in perceptual acuity, and has been described in both humans and animals. Data from recent electrophysiological studies have indicated that olfactory perceptual learning may be correlated with changes in odorant receptive fields of neurons in the olfactory bulb ...

In this paper, a SELective Perceptual-based (SELP) framework is presented to reduce the complexity of popular super-resolution (SR) algorithms while maintaining the desired quality of the enhanced images/video. A perceptual Human Visual System (HVS) model is proposed to compute local contrast sensitivity thresholds. The obtained ...

A Spatio-Spectral Algorithm for Robust and Scalable Object Tracking in Videos Alireza Tavakkoli1 present in video frames and prepares mid-level tracking trajectories of objects of interest within their appearance models, maintains them and tracks these individuals within the video. The proposed ...