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The Springer International Engineering and Computer Science

By: David J. Fleet

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Hardcover | 31 March 1992

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Hardcover
224 Pages

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24.77 x 16.51 x 1.91

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Measurement of Image Velocity presents a computational framework for computing motion information from sequences of images. Its specific goal is the measurement of image velocity (or optical flow), the projection of 3-D object motion onto the 2-D image plane.
The formulation of the problem emphasizes the geometric and photometric properties of image formation, and the occurrence of multiple image velocities caused, for example, by specular reflections, shadows, or transparency. The method proposed for measuring image velocity is based on the phase behavior in the output of velocity-tuned filters. Extensive experimental work is used to show that phase can be a reliable source of pure image translation, small geometric deformation, smooth contrast variations, and multiple local velocities. Extensive theorectical analysis is used to explain the robustness of phase with respect to deviations from image translation, and to detect situations in which phase becomes unstable. The results indicate that optical flow may be extracted reliably for computing egomotion and structure from motion.
The monograph also contains a review of other techniques and frequency analysis applied to image sequences, and it discusses the closely related topics of zero-crossing tracking, gradient-based methods, and the measurement of binocular disparity. The work is relevant to those studying machine vision and visual perception.

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You Can Find This Book In

Non-Fiction Computing & I.T.Computer Science Image Processing Artificial Intelligence Computer Vision Graphical & Digital Media Applications Gardening Engineering & Technology Electronics & Communications Engineering Electronics Engineering Automatic Control Engineering

Robotics Energy Technology & Engineering Electrical Engineering

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Paperback

Published: 30th September 2012

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Foreword
Preface
Introduction	p. 3
Time-Varying Image Formation	p. 11
Image Velocity and Frequency Analysis	p. 19
Velocity-Specific Representation	p. 29
Review of Existing Techniques	p. 37
Image Velocity as Local Phase Behaviour	p. 55
Experimental Results	p. 67
Computing 2-D Velocity	p. 85
Scale-Space Phase Stability	p. 105
Scale-Space Phase Singularities	p. 119
Application to Natural Images	p. 133
Summary and Discussion	p. 151
App. A Reflectance Model	p. 157
App. B Proof of an n-D Uncertainty Relation	p. 165
App. C Numerical Interpolation and Differentiation of R(x, t)	p. 167
App. D Additional Experiments	p. 171
App. E Approximations to [actual symbol not reproducible]	p. 181
App. F Derivations of z[subscript 1]	p. 185
App. G Density Functions for [actual symbol not reproducible]	p. 187
Bibliography	p. 191
Index	p. 201
Table of Contents provided by Blackwell. All Rights Reserved.

The Springer International Engineering and Computer Science

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Hardcover

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You Can Find This Book In

Other Editions and Formats

Paperback

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