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Proceedings Paper

Determining Optical Flow
Author(s): Berthold K.P. Horn; Brian G. Schunck
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Paper Abstract

Optical flow cannot be computed locally, since only one independent measurement is available from the image sequence at a point, while the flow velocity has two components. A second constraint is needed. A method for finding the optical flow pattern is presented which assumes that the apparent velocity of the brightness pattern varies smoothly almost everywhere in the image. An iterative implementation is shown which successfully computes the optical flow for a number of synthetic image sequences. The algorithm is robust in that it can handle image sequences that are quantized rather coarsely in space and time. It is also insensitive to quantization of brightness levels and additive noise. Examples are included where the assumption of smoothness is violated at singular points or along lines in the image.

Paper Details

Date Published: 12 November 1981
PDF: 13 pages
Proc. SPIE 0281, Techniques and Applications of Image Understanding, (12 November 1981); doi: 10.1117/12.965761
Show Author Affiliations
Berthold K.P. Horn, Massachusetts Institute of Technology (United States)
Brian G. Schunck, Massachusetts Institute of Technology (United States)


Published in SPIE Proceedings Vol. 0281:
Techniques and Applications of Image Understanding
James J. Pearson, Editor(s)

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