I'm must have been making some point when I made these years ago.
Not clear what that was, though.

New! In an effort to show mercy to wayward googlers searching for innocuous technical terms, I've removed the descriptions from most of these animations.
As an added benefit, these pages are now completely inscrutable.

Eigenvectors of Natural Range Images
Intensity Across Lambertian Sphere Cross Section
Eigenvector Coefficient Histogram Predictions for Lambertian Sphere
Histograms for Entire Sphere
PCA analysis of Entire Sphere
General Lambertian Histogram

Radiosity Models
Generated Spheres
Fourier of Gaussian
Fourier of Range Images

Co-occurance of LA and LB with L0 using template matching
Co-occurance of LA and L0 using Gaussian Derivatives