December 2001
Volume 1, Issue 3
Free
Vision Sciences Society Annual Meeting Abstract  |   December 2001
What motion information is perceptually relevant?
Author Affiliations
  • J. Malo
    NASA Ames Research Center, CA, USA
  • J. Gutierrez
    Dep. Informatica, Universitat de Valencia, Valencia, Spain
  • I. Epifanio
    Dep. Matematiques Universitat Jaume I, Castellon, Spain
Journal of Vision December 2001, Vol.1, 309. doi:10.1167/1.3.309
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      J. Malo, J. Gutierrez, I. Epifanio; What motion information is perceptually relevant?. Journal of Vision 2001;1(3):309. doi: 10.1167/1.3.309.

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Abstract

Conventional optical flow techniques provide a motion description that may be redundant for a human viewer. Computational effort may be wasted describing ‘perceptually irrelevant motions’. This inefficient behavior may also give rise to false alarms and noisy flows. To solve this problem, hierarchical optical flow techniques have been proposed. They start from a low resolution motion estimate and new motion information is locally added only in certain regions. However, new motion information should be added only if it is ‘perceptually relevant’. In this work we propose a definition of ‘perceptually relevant motion information’. This definition is based on the entropy of the image representation in the human cortex (Watson JOSA 87, Daugman IEEE T.Biom.Eng. 89): an increment in motion information is perceptually relevant if it contributes to decrease the entropy of the cortex representation of the prediction error. Numerical experiments (optical flow computation and flow-based segmentation) show that applying this definition to a particular hierarchical motion estimation algorithm, more robust and meaningful flows are obtained.

Malo, J., Gutierrez, J., Epifanio, I.(2001). What motion information is perceptually relevant? [Abstract]. Journal of Vision, 1( 3): 309, 309a, http://journalofvision.org/1/3/309/, doi:10.1167/1.3.309. [CrossRef]
Footnotes
 Aknowledgements: This work has been partially funded by the projects CICYT TIC 1FD97-0279 and CICYT TIC 1FD97-1910, and the Fulbright-MEC PostDoc grant FU2000-29167406.
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