98-018, December 1998. An improved technique for 3D head tracking under varying illumination conditions is proposed. The head is modeled as a texture mapped cylinder.
Tracking is formulated as an image registration problem in the cylinder's texture map image.
To solve the registration problem in the presence of lighting variation and head motion, the residual error of registration is modeled as a linear combination of texture warping templates and orthogonal illumination templates. Fast and stable on-line tracking is then achieved via regularized, weighted least squares minimization of the registration error. 21, no.6, June 1999. Doc 163 Feature extraction from faces using deformable templates - Yuille, Cohen et al. Doc 107 Neural networkbased face detection - Rowley, Baluja et al.