Preliminary, and will be repeated door to door to trap errors
No questions yet, please, I've yet to validate my workflow.
Virtually all salient questions will be answered in the docs.
Source is 8 bit 4:4:4 TIFF and marked for re-use.
Full size composite is 4K 2160x4320 8 bit 4:4:4 I will make that available because it's a pretty good reference for screen matching, too.
From top clockwise RYGCBM 5% nonlinear grade. Center is Reference keystone. (identical).
Comments are invited on the rough cut, but I won't tell you which is which until I've run the SSIM comparisons, which keeps this a truly double-blind survey. Will use distance formula first, an RMS Regression "may" come later, but I would need to retrain myself.