Near-optimal combination of disparity across a log-polar scaled visual field.

ABSTRACT: The human visual system is foveated: we can see fine spatial details in central vision, whereas resolution is poor in our peripheral visual field, and this loss of resolution follows an approximately logarithmic decrease. Additionally, our brain organizes visual input in polar coordinates. Therefore, the image projection occurring between retina and primary visual cortex can be mathematically described by the log-polar transform. Here, we test and model how this space-variant visual processing affects how we process binocular disparity, a key component of human depth perception. We observe that the fovea preferentially processes disparities at fine spatial scales, whereas the visual periphery is tuned for coarse spatial scales, in line with the naturally occurring distributions of depths a

SUBMITTER: Maiello G 

PROVIDER: S-EPMC7176150 | biostudies-literature | 2020 Apr

REPOSITORIES: biostudies-literature