Confused?

[ultraCAO]

any idea why is it doing this? it works fine if I crop out the top part of the ColorChecker Passport. and only leaving the standard 24 patches.

[ryanfb]

I think the original code works best when the colorchecker isn't taking up the full frame. Probably at this point, a ML-based rewrite would be more robust and perform better.

[ultraCAO]

I think the original code works best when the colorchecker isn't taking up the full frame. Probably at this point, a ML-based rewrite would be more robust and perform better.

Those images are cropped to show just the ColorChecker with the output, they were full frame with the ColorChecker taking up about 1/8 to 1/6 of the full frame.
Also, it didn't work with a 16-bit file. in the code path at some point, it wants 8-bit only.
An ML-based one would be lovely. Let me know if you going to start a repo for that. I'll help with the model training.