Estimation of pose and illuminant direction for face processing

In this paper three problems related to the analysis of facial images are addressed: the estimation of the illuminant direction, the compensation of illumination effects and, finally, the recovery of the pose of the face, restricted to in-depth rotations. The solutions proposed for these problems rely on the use of computer graphics techniques to provide images of facts under different illumination and pose? starting from a database of frontal views under frontal illumination. (C) 1997 Elsevier Science B.V.