## Illusory Surfaces

This work is supported by the NSF CAREER Award and by the Sloan Foundation.
(a)                   (b)

(c)                   (d)

Figures (a) and (c) are known as Kanizsa figures. I study the formation of illusory contours (the boundary of objects that humans perceive, but where intensity gradient information is not present) via the formation of salient surfaces. The ouput of the algorithms proposed by us (collaborators and I) are salient surfaces as shown in (b) and (d).

Here, at the Center for Neural Sciences, professors Nava Rubin and Robert Shapley are also working on the perceptual/computational issues related to these phenomena.

There are interesting phenomena relating illusory contours to stereo vision and in particular the phenomena gets a much stronger perception.

Paper and Abstracts: