Recovering the Shading Image under Known Illumination

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Venue:
CRV '04 Proceedings of the 1st Canadian Conference on Computer and Robot Vision
Year:
2004

Citing 4
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Abstract

Given a standard RGB color image, an approach to recoveringthe shading image, an intrinsic image that dependsonly on the geometry of the viewing situation, ispresented. The approach is formulated for scenes that exhibitboth diffuse and specular properties. It is discriminativein the sense that variations in intensity caused by materialchanges are .rst detected and then removed. Materialchanges are detected using a method based on colorinformation alone. The method stems from a scheme proposedhere to handle specularities under known scene illuminationchromaticity. This scheme is also used to producean image that is free of specular re.ections. Any materialchanges are then removed from this specular-free imageby using an inpainting technique. The performance ofthe proposed approach has been tested on synthetic images.