Computing the velocity field along contours (abstract only)

In this paper, we present a computational study of the measurement of motion. Similar to other visual processes, the motion of elements is not determined uniquely by information in the changing image; additional constraint is required to compute a unique velocity field. Given this global ambiguity o...

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Bibliographic Details
Published in:Computer graphics (New York, N.Y.) N.Y.), 1984-01, Vol.18 (1), p.24-24
Main Author: Hildreth, Ellen C.
Format: Article
Language:English
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Summary:In this paper, we present a computational study of the measurement of motion. Similar to other visual processes, the motion of elements is not determined uniquely by information in the changing image; additional constraint is required to compute a unique velocity field. Given this global ambiguity of motion, local measurements from the changing image cannot possibly specify a unique local velocity vector, and in fact, may only specify one component of velocity. Computation of the full two-dimensional velocity field generally requires the integration of local motion measurements, either over an area, or along contours in the image. We examine the integration of local motion measurements along contours, using an additional constraint of smoothness of the velocity field. The predictions of an algorithm based on this constraint are compared with human motion perception on a few demonstrations.
ISSN:0097-8930
DOI:10.1145/988525.988534