Show Light

Move the mouse cursor around over the image (which may take a little while to appear).

This demo is based on the following paper: "What is the Set of Images of an Object Under All Possible Lighting Conditions?", by P. N. Belhumeur and D. J. Kriegman, in the proceedings of the 1996 conference on Computer Vision and Pattern Recognition (CVPR '96), page 270.
Source code for the viewer is available, as are the normal vectors.