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Encoding and estimation of first- and second-order binocular disparity in natural images.


ABSTRACT: The first stage of processing of binocular information in the visual cortex is performed by mechanisms that are bandpass-tuned for spatial frequency and orientation. Psychophysical and physiological evidence have also demonstrated the existence of second-order mechanisms in binocular processing, which can encode disparities that are not directly accessible to first-order mechanisms. We compared the responses of first- and second-order binocular filters to natural images. We found that the responses of the second-order mechanisms are to some extent correlated with the responses of the first-order mechanisms, and that they can contribute to increasing both the accuracy, and depth range, of binocular stereopsis.

SUBMITTER: Hibbard PB 

PROVIDER: S-EPMC4802249 | biostudies-literature | 2016 Mar

REPOSITORIES: biostudies-literature

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Encoding and estimation of first- and second-order binocular disparity in natural images.

Hibbard Paul B PB   Goutcher Ross R   Hunter David W DW  

Vision research 20160114


The first stage of processing of binocular information in the visual cortex is performed by mechanisms that are bandpass-tuned for spatial frequency and orientation. Psychophysical and physiological evidence have also demonstrated the existence of second-order mechanisms in binocular processing, which can encode disparities that are not directly accessible to first-order mechanisms. We compared the responses of first- and second-order binocular filters to natural images. We found that the respon  ...[more]

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