A generalized brightness change model for computing optical flow

Research output: Chapter in Book/Report/Conference proceedingConference contribution

72 Scopus citations

Abstract

We propose an image motion constraint equation based on a model which allows the brightness of a scene point to vary with time, unlike the case in the brightness constancy model. Using this model, we describe a method for the computation of optical flow and investigate its performance in a variety of conditions involving brightness variations of scene points, due to illumination nonuniformity, light source motion, specular reflection, and/or interreflection. We show that in the application of this method, care must be taken in the estimation of image derivatives using finite difference methods to prevent biases in the solution. We suggest a simple modification to overcome them. Comparison with two other models, including the classical brightness constancy, is made through results from experiments with real images.

Original languageEnglish (US)
Title of host publication1993 IEEE 4th International Conference on Computer Vision
PublisherPubl by IEEE
Pages2-11
Number of pages10
ISBN (Print)0818638729
StatePublished - Jan 1 1993
Event1993 IEEE 4th International Conference on Computer Vision - Berlin, Ger
Duration: May 11 1993May 14 1993

Publication series

Name1993 IEEE 4th International Conference on Computer Vision

Other

Other1993 IEEE 4th International Conference on Computer Vision
CityBerlin, Ger
Period5/11/935/14/93

ASJC Scopus subject areas

  • Engineering(all)

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  • Cite this

    Negahdaripour, S., & Yu, C. H. (1993). A generalized brightness change model for computing optical flow. In 1993 IEEE 4th International Conference on Computer Vision (pp. 2-11). (1993 IEEE 4th International Conference on Computer Vision). Publ by IEEE.