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Global Depth Perception from Familiar Scene Structure
(2001-12-01)
In the absence of cues for absolute depth measurements as binocular disparity, motion, or defocus, the absolute distance between the observer and a scene cannot be measured. The interpretation of shading, edges and junctions ...
Surface Reflectance Estimation and Natural Illumination Statistics
(2001-09-01)
Humans recognize optical reflectance properties of surfaces such as metal, plastic, or paper from a single image without knowledge of illumination. We develop a machine vision system to perform similar recognition tasks ...