Facial Shape Estimation in the Presence of Cast Shadows | Zendy

William A. P. Smith | Zendy; Edwin R. Hancock | Zendy

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Facial Shape Estimation in the Presence of Cast Shadows

Author(s) -

William A. P. Smith,

Edwin R. Hancock

Publication year - 2006

Publication title -

citeseer x (the pennsylvania state university)

Language(s) - English

Resource type - Conference proceedings

DOI - 10.5244/c.20.80

Subject(s) - shadow (psychology) , artificial intelligence , computer vision , shadow mapping , surface (topology) , computer science , face (sociological concept) , photometric stereo , image (mathematics) , shading , mathematics , computer graphics (images) , geometry , psychology , social science , sociology , psychotherapist

This paper describes a method for cast shadow removal from obliquely illuminated images of faces. The method draws on a statistical model of surface normal directions. The model is fitted to shadowed facial images using robust statistics and constraints provided by shape-from-shading. Regions associated with poor fit residuals are associated with shadow regions. We illustrate the method on the Yale B database where it gives both good shadow map estimates and fills-in the facial surface in the shadow regions.

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