A network model of disparity estimation was developed
based on disparity-selective neurons, such as those found
in the early stages of processing in the visual cortex.
The model accurately estimated multiple disparities in
regions, which may be caused by transparency or occlusion.
The selective integration of reliable local estimates enabled
the network to generate accurate disparity estimates on
normal and transparent random-dot stereograms. The model
was consistent with human psychophysical results on the
effects of spatial-frequency filtering on disparity sensitivity.
The responses of neurons in macaque area V2 to random-dot
stereograms are consistent with the prediction of the model
that a subset of neurons responsible for disparity selection
should be sensitive to disparity gradients.