Color transformations using tetrahedral interpolation, includes both an implemention for the expression node and blinkscript. I never managed to solve an inverse function for this to round trip back, which is something I came really close to but eventually scrapped. So for now only a simple forward operation.
For folks unfamiliar with Steve Yedlin, ASC: These implementations are supposed to be replications of the one's Yedlin showcasesd. A video where he willingly showed half of the blinkscript code can be found in the end of this page below (0:14:30). Where I only attemped to reconstruct the missing parts with the help of some math from various papers also linked in the end of the page below, which I then later also translated to the expression node for NC Nuke users.
TetraAutomater is only the suggestion of what it could be doing, since it was never mentioned.
I just want to be able to share these for everyone to use. So I don't expect any credit from it!
Video demonstration: https://www.youtube.com/watch?v=8kBkYEiAkIw
NEW: Check out a port made for Fusion by Ember Light https://github.com/EmberLightVFX/Tetrahedral-Interpolation-for-Fusion
As the name suggests, matches the 6 colors automatically, given an input and output. Can also be used for an inverse operation but not recommended. The python library SymPy will be required (found SymPy==1.5 to work correctly, newer versions seem to cause issues due to some change to how the solver works).
Originally written for MATLAB by Juanjo Salazar, solution was later translated to python by Ethan Ou.