My PhD Research at Caltech

I completed my Ph.D. research under the direction of Professor Pietro Perona.

Our group, the Vision Group , is interested in many aspects of vision, from human to computer.

My research, in particular, was focused on how human beings perceive 3-D shape from shaded images.

As illustrated by this photograph of the statue of St. Sebastian , even a grey-level image devoid of stereo information can give a compelling impression of 3-D shape. Various visual cues that tell us about 3-D shape can be derived from shading and boundary contour information alone.

The study of the mechanisms and processes our brain uses to build perceptual 3-D shapes from such 2-D shading cues is known, in our jargon, as the study of shape from shading .