vkdt camera profiles

this repository collects user-contributed camera data. in particular, we are interested in:

• noise profiles, created with the noise-profile.sh in the vkdt repository (data/nprof/${maker}-${model}-${iso}.nprof)
• input device transform luts, created by vkdt-mkclut from spectral measurements, colour checker shots, or dng profiles (data/${maker} ${model}.lut)
• spectral CFA response curves if available