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Bandpass channels, zero-crossings, and early visual information processing.

D Marr·S Ullman·T Poggio
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Abstract

Under appropriate conditions zero-crossings of a bandpass signal are very rich in information. The authors examine here the relevance of this result to the early stages of visual information processing, where zero-crossings in the output of independent spatial-frequency-tuned channels may contain sufficient information for much of the subsequent processing.

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HumansInformation TheoryModels, BiologicalVision, OcularJournal ArticleResearch Support, U.S. Gov't, Non-P.H.S.

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D Marr, S Ullman, T Poggio. 1979. Bandpass channels, zero-crossings, and early visual information processing.. https://doi.org/10.1364/josa.69.000914

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