Encoding and estimation of first- and second-order binocular disparity in natural images
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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.
Hibbard , P B , Goutcher , R & Hunter , D W 2016 , ' Encoding and estimation of first- and second-order binocular disparity in natural images ' Vision Research , vol 120 , pp. 108 - 120 . DOI: 10.1016/j.visres.2015.10.016
© 2016 The Authors. This is an open access article under the CC BY license, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Research supported by BBSRC Grant Nos. BB/G004803/1 (RG) and BB/K018973/1 (PH/DH).
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