Spatial Vision Processes
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Spatial Vision Processes
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Author : Daniel J. Jobson
language : en
Publisher:
Release Date : 1988
Spatial Vision Processes written by Daniel J. Jobson and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988 with Computer vision categories.
Spatial Vision Processes From The Optical Image To The Symbolic Structures Of Contour Information
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Author : Daniel J. Jobson
language : en
Publisher:
Release Date : 1988
Spatial Vision Processes From The Optical Image To The Symbolic Structures Of Contour Information written by Daniel J. Jobson and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988 with categories.
Spatial Vision Processes
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Author : National Aeronautics and Space Administration (NASA)
language : en
Publisher: Createspace Independent Publishing Platform
Release Date : 2018-07-11
Spatial Vision Processes written by National Aeronautics and Space Administration (NASA) and has been published by Createspace Independent Publishing Platform this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-07-11 with categories.
The significance of machine and natural vision is discussed together with the need for a general approach to image acquisition and processing aimed at recognition. An exploratory scheme is proposed which encompasses the definition of spatial primitives, intrinsic image properties and sampling, 2-D edge detection at the smallest scale, the construction of spatial primitives from edges, and the isolation of contour information from textural information. Concepts drawn from or suggested by natural vision at both perceptual and physiological levels are relied upon heavily to guide the development of the overall scheme. The scheme is intended to provide a larger context in which to place the emerging technology of detector array focal-plane processors. The approach differs from many recent efforts in edge detection and image coding by emphasizing smallest scale edge detection as a foundation for multi-scale symbolic processing while diminishing somewhat the importance of image convolutions with multi-scale edge operators. Cursory treatments of information theory illustrate that the direct application of this theory to structural information in images could not be realized. Jobson, Daniel J. Langley Research Center RTOP 549-02-21-01...
Role Of Retinocortical Processing In Spatial Vision
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Author : Donald H. Kelly
language : en
Publisher:
Release Date : 1990
Role Of Retinocortical Processing In Spatial Vision written by Donald H. Kelly and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with categories.
This project was an attempt to understand the major functions of early vision by considering how various components cooperate in preparing visual information to organize our perceptions of the world around us. To this end, and with the cooperation of SRI's Machine Vision Group, we assembled some of these functions in a computational working model, which can graphically display the spatial structure of the formation at a given stage of the visual process, in the form of a two-dimensional intensity array (or 'image'). This capability was developed to facilitate the study and comparison of retinal and cortical inputs and outputs of spatial information. The individual components of the model are well known, and the relations among them are based on available data from the literature. However, two aspects of this project seem novel. One is the exploitation of powerful, state-of-the-art tools of computational vision, such as Symbolics 3600-series LISP machines, to create and display our results. These tools were developed primarily for artificial intelligence purposes; they have rarely been used for basic studies in human vision. (JES).
Spatial Vision
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Author : Russell L. DeValois
language : en
Publisher: Oxford University Press
Release Date : 1990-08-09
Spatial Vision written by Russell L. DeValois and has been published by Oxford University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990-08-09 with Psychology categories.
This volume presents an integrated view of how we perceive the spatial relations in our visual world, covering anatomical, physiological, psychophysical, and perceptual aspects. The authors discuss the visual system primarily in terms of spatial frequency analysis using a linear systems approach. They review evidence supporting a local, patch-by-patch spatial frequency filtering of visual information rather than the global Fourier analysis other researchers have proposed. A separate chapter addresses the special issues surrounding color vision, and a brief, nonmathematical introduction to linear systems analysis is included for the uninitiated reader.
Spatial Vision In Humans And Robots
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Author : Laurence Harris
language : en
Publisher: Cambridge University Press
Release Date : 1993
Spatial Vision In Humans And Robots written by Laurence Harris and has been published by Cambridge University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with Computers categories.
A book of great interest both to biological researchers and also to designers of robots and computer vision systems.
Visual Perception Theory And Practice
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Author : Terry Caelli
language : en
Publisher: Elsevier
Release Date : 2014-05-09
Visual Perception Theory And Practice written by Terry Caelli and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-05-09 with Psychology categories.
Visual Perception: Theory and Practice focuses on the theory and practice of visual perception, with emphasis on technologies used in vision research and in visual information processing. Central areas of vision research including spatial vision, motion perception, and color are discussed. Light and optics, convolutions and Fourier methods, and network theory and systems are also examined. Comprised of nine chapters, this book begins with an overview of language and processes underlying specific areas of vision such as measures of neural activity, feature specificity, and individual cells and psychophysics. The reader is then systematically introduced to the more essential properties of light and optics relevant to visual perception; the use of convolutions, Fourier series, and Fourier transform to model processes in visual perception; and network theory and systems. Subsequent chapters deal with the geometry of visual perception; spatial vision; the perception of motion; and some specific issues in visual perception, including color perception, binocular vision, and steriopsis. This monograph is intended for students, practitioners, and investigators in physiology.
Emergent Techniques For Assessment Of Visual Performance
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Author : National Research Council
language : en
Publisher: National Academies Press
Release Date : 1985-01-01
Emergent Techniques For Assessment Of Visual Performance written by National Research Council and has been published by National Academies Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1985-01-01 with Medical categories.
Recent vision research has led to the emergence of new techniques that offer exciting potential for a more complete assessment of vision in clinical, industrial, and military settings. Emergent Techniques for Assessment of Visual Performance examines four areas of vision testing that offer potential for improved assessment of visual capability including: contrast sensitivity function, dark-focus of accommodation, dynamic visual acuity and dynamic depth tracking, and ambient and focal vision. In contrast to studies of accepted practices, this report focuses on emerging techniques that could help determine whether people have the vision necessary to do their jobs. In addition to examining some of these emerging techniques, the report identifies their usefulness in predicting performance on other visual and visual-motor tasks, and makes recommendations for future research. Emergent Techniques for Assessment of Visual Performance provides summary recommendations for research that will have significant value and policy implications for the next 5 to 10 years. The content and conclusions of this report can serve as a useful resource for those responsible for screening industrial and military visual function.
A Discrepancy Within Primate Spatial Vision And Its Bearing On The Definition Of Edge Detection Processes In Machine Vision
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Author : National Aeronautics and Space Administration (NASA)
language : en
Publisher: Createspace Independent Publishing Platform
Release Date : 2018-06-29
A Discrepancy Within Primate Spatial Vision And Its Bearing On The Definition Of Edge Detection Processes In Machine Vision written by National Aeronautics and Space Administration (NASA) and has been published by Createspace Independent Publishing Platform this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-06-29 with categories.
The visual perception of form information is considered to be based on the functioning of simple and complex neurons in the primate striate cortex. However, a review of the physiological data on these brain cells cannot be harmonized with either the perceptual spatial frequency performance of primates or the performance which is necessary for form perception in humans. This discrepancy together with recent interest in cortical-like and perceptual-like processing in image coding and machine vision prompted a series of image processing experiments intended to provide some definition of the selection of image operators. The experiments were aimed at determining operators which could be used to detect edges in a computational manner consistent with the visual perception of structure in images. Fundamental issues were the selection of size (peak spatial frequency) and circular versus oriented operators (or some combination). In a previous study, circular difference-of-Gaussian (DOG) operators, with peak spatial frequency responses at about 11 and 33 cyc/deg were found to capture the primary structural information in images. Here larger scale circular DOG operators were explored and led to severe loss of image structure and introduced spatial dislocations (due to blur) in structure which is not consistent with visual perception. Orientation sensitive operators (akin to one class of simple cortical neurons) introduced ambiguities of edge extent regardless of the scale of the operator. For machine vision schemes which are functionally similar to natural vision form perception, two circularly symmetric very high spatial frequency channels appear to be necessary and sufficient for a wide range of natural images. Such a machine vision scheme is most similar to the physiological performance of the primate lateral geniculate nucleus rather than the striate cortex. Jobson, Daniel J. Langley Research Center RTOP 307-51-10...
Spatial Vision
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Author : David Regan
language : en
Publisher: Springer
Release Date : 1991
Spatial Vision written by David Regan and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with Medical categories.