DrDre said:

I believe I have solved the problem of crushed whites, and blacks for the CollorCorrect GUI v1.2. While trying to improve the grading for a frame of The Empire Strikes Back with a color correction model I calibrated on a frame of Star Wars, I had the following problem:

Semi-Specialised Edition V2.2:

This is what I got:

The source frame suffers from crushed whites, so the model could not correctly estimate the colors, resulting in artifacts.

I realized where the problem is with crushed whites and blacks, namely that it introduces errors in the color distribution, implemented a solution, and this is what I got:

Pretty neat, I think, and the colors look pretty good as well... :-)

Turns out the solution for crushed whites and blacks reduces the accuracy of the match. So, back to the drawing board for this problem.