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Books > Computing & IT > Applications of computing > Artificial intelligence > Computer vision
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Measurement of Image Velocity (Hardcover, 1992 ed.)
Loot Price: R3,152
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Measurement of Image Velocity (Hardcover, 1992 ed.)
Series: The Springer International Series in Engineering and Computer Science, 169
Expected to ship within 10 - 15 working days
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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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