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Proceedings Paper

Invariants in visual motion
Author(s): Daniel Raviv
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Paper Abstract

This paper deals with new and simple representations of 3-D points in a moving-observer coordinate system. Assuming rectilinear motion with no rotation of an observer where the optical axis coincides with the direction of motion, and a stationary scene, points in 3-D space that lie on a particular 3-D surface produce constant value of some nonlinear function of the measurable image optical flow. Five sets of different surfaces are introduced and there is one optical-flow based constant value for each surface. We called these values `invariants.' It is shown how to extract these invariants and how to use them for representing 3-D space.

Paper Details

Date Published: 6 August 1993
PDF: 8 pages
Proc. SPIE 2056, Intelligent Robots and Computer Vision XII: Active Vision and 3D Methods, (6 August 1993); doi: 10.1117/12.150220
Show Author Affiliations
Daniel Raviv, Florida Atlantic Univ. and National Institute of Standards and Technology (United States)

Published in SPIE Proceedings Vol. 2056:
Intelligent Robots and Computer Vision XII: Active Vision and 3D Methods
David P. Casasent, Editor(s)

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