DOI: 10.1098/rspb.1984.0030. The computation of the velocity field

10.1098/rspb.1984.0030

Crossref journal-article

The Royal Society

Proceedings of the Royal Society of London. Series B. Biological Sciences (175)

Abstract

The organization of movement in the changing retinal image provides a valuable source of information for analysing the environment in terms of objects, their motion in space, and their three-dimensional structure. A description of this movement is not provided to our visual system directly, however; it must be inferred from the pattern of changing intensity that reaches the eye. This paper examines the problem of motion measurement, which we formulate as the computation of an instantaneous two-dimensional velocity field from the changing image. Initial measurements of motion take place at the location of significant intensity changes. These measurements provide only one component of local velocity, and must be integrated to compute the two-dimensional velocity field. A fundamental problem for this integration stage is that the velocity field is not determined uniquely from information available in the changing image. We formulate an additional constraint of smoothness of the velocity field, based on the physical assumption that surfaces are generally smooth, which allows the computation of a unique velocity field. A theoretical analysis of the conditions under which this computation yields the correct velocity field suggests that the solution is physically plausible. Empirical studies show the predictions of this computation to be consistent with human motion perception.

Bibliography

The computation of the velocity field. (1984). Proceedings of the Royal Society of London. Series B. Biological Sciences, 221(1223), 189â220.

Authors 0

None

References 68 Referenced 99

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Dates

Type	When
Created	18 years, 8 months ago (Dec. 18, 2006, 6:11 p.m.)
Deposited	4 years, 6 months ago (Feb. 14, 2021, 7:22 p.m.)
Indexed	11 months, 2 weeks ago (Sept. 7, 2024, 7:23 a.m.)
Issued	41 years, 3 months ago (April 24, 1984)
Published	41 years, 3 months ago (April 24, 1984)
Published Online	28 years, 7 months ago (Jan. 1, 1997)
Published Print	41 years, 3 months ago (April 24, 1984)

Funders 0

None

BibTeX

@article{1984, volume={221}, ISSN={2053-9193}, url={http://dx.doi.org/10.1098/rspb.1984.0030}, DOI={10.1098/rspb.1984.0030}, number={1223}, journal={Proceedings of the Royal Society of London. Series B. Biological Sciences}, publisher={The Royal Society}, year={1984}, month=apr, pages={189–220} }

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