The debugged color matching tool v1.2 offers much improved color matching capabilities. It’s more accurate, more stable, and much faster.
Just a little late catching up here, but … whoa, that’s an awesome demonstration!
- Will you incorporate any algorithm to prevent the originally flattened RGB from “stair-stepping” on expansion (looking like acne pot-marks especially on skin colors)?
[EDIT: Actually, most of what finally shows is on the source (ouch, I’ve seen those R-G-B splits!). Only, it is stronger once the RGB spectrums are normalized. That would require pre-processing, which is probably outside of the scope of a color-match project.]
- Since you’re working in RGB, would this work even on a film faded nearly flat where R≈G≈B (ww1234’s 2001:ASO project scan comes to mind)?
In this case the color match was done using an 8-bit color image. In practise you would use at least a 16-bit color image, which would prevent stair stepping, unless it is part of the original 35mm frame. It’s also interesting to note, that this print has sufficient amounts of color noise.