Oxyopia Abstract

July 19, 2002
Noon
489 Minor Hall

Jamie Hillis, PhD
Vision Science Porgram ,University of california, Berkeley
Host: Martin Banks

Title

"Combining texture and disparity cues to recover surface orientation"

Abstract

The visual system relies on multiple sources of information to estimate environmental properties. For example, the eyes pick up shape information from the object's projected outline, its disparity gradient, texture gradient, shading, and more. When multiple cues are available, it would be sensible to combine them in a way that yields a more accurate estimate of the object property in question than any single-cue estimate would. By combining information from multiple sources, the nervous system might lose access to single-cue information. We examine how the visual system estimates surface orientation from disparity and texture gradients and found that single-cue information is indeed lost. This mandatory combination of cues would be beneficial if errors in texture and disparity estimates were more likely the cause of discrepancy that actual signal differences.

[Back to Hillis - Oxyopia Page]