Is Correspondence Search in Human Stereo Vision a Coarse-to-Fine Process?

Mallot, HA; Gillner, S; Arndt, PA

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Is Correspondence Search in Human Stereo Vision a Coarse-to-Fine Process?

Mallot, H., Gillner, S., & Arndt, P.(1994). Is Correspondence Search in Human Stereo Vision a Coarse-to-Fine Process? (4). Tübingen, Germany: Max Planck Institute for Biological Cybernetics.

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Item Permalink: https://hdl.handle.net/11858/00-001M-0000-0013-ED44-7 Version Permalink: https://hdl.handle.net/21.11116/0000-0002-8840-C

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Mallot, HA^{1, 2}, Author
Gillner, S^{1, 2}, Author
Arndt, PA, Author

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1Department Human Perception, Cognition and Action, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497797
2Max Planck Institute for Biological Cybernetics, Max Planck Society, Spemannstrasse 38, 72076 Tübingen, DE, ou_1497794

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Abstract: One possible strategy for the solution of the correspondence problem of stereo matching is the coarse-to-fine mechanism: The matching process starts with a lowpass filtered version of the stereogram where only a few, high contrast image features can be extracted and the probability of false matches is therefore low. In
subsequent stages, information from higher spatial frequencies is used to gradually improve the correspondence data obtained on the coarser scales. Coarse-to-fine strategies predict that information from coarse scale is used to disambiguate matching information on finer
scales. We have tested this prediction by means of the
wallpaper-illusion using periodic intensity-profiles with different matching ambiguities on different spatial scale. Our psychophysical experiments show (i) that unambiguous information at coarse scale is not always used to disambiguate finer scale information, (ii) that
unambiguous fine scale information can be used to disambiguate coarse scale information and (iii) that low spatial frequency is more efficient for disambiguation than higher frequency. We conclude that the human stereo vision system does not always proceed from coarse to fine. As an alternative scheme for scale-space-integration, we
discuss more symmetric schemes such as maximum likelihood
combinations of data from different channels.

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Dates: Date issued: 1994-03

Publication Status: Issued

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Publishing info: Tübingen, Germany : Max Planck Institute for Biological Cybernetics

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Identifiers: Report Nr.: 4
BibTex Citekey: 1459

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Title: Technical Report of the Max Planck Institute for Biological Cybernetics

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Pages: - Volume / Issue: 4 Sequence Number: - Start / End Page: - Identifier: -