PCA

VQ

CPCA

Uncompressed

Translucent+glossy Buddha in two lighting environments.  These images were rendered at 27Hz.

(a) Head, 58.5Hz

(b) Buddha, 42.8Hz

Glossy phong models.  We get a performance speedup of 16-20x over the method in [Sloan et al. 2002] without noticeable degradation, by encoding with CPCA and using least-squares optimal projection to reduce matrix rows from 25 to 16.