Click and drag over the images.

LPTM: PTM in LRGB, 9 planes (encoded as 3jpg)
PTM: 18 planes (encoded as 6jpg)
HSH: 27 planes (encoded as 9jpg)
RBF: radial basis function interpolation and PCA dimensional reduction (number of planes specified and saved as jpg)
YCC: same as RBF but using YCbCr color space and each component is separated, number of planes per component listed
Image: closest original image.

Relight: an efficient and versatile RTI compression format