While I appreciate anyone rebuilding from the studs, there is so much left out that I think is essential to even a basic discussion.

1. Not all sensors are CMOS/Bayer. Fuji's APS C series uses X-Trans filters, which are similar to Bayer, but a very different overlay. And there's RYYB, Nonacell, EXR, Quad Bayer, and others. 2. Building your own crude demosaicing and LUT (look up table) process is ok, but important to mention that every sensor is different and requires its own demosaicing and debayering algorithms that are fine-tuned to that particular sensor. 3. Pro photogs and color graders have been doing this work for a long time, and there are much more well-defined processes for getting to a good image. Most color grading software (Resolve, SCRATCH, Baselight) have a wide variety of LUT stacking options to build proper color chains. 4. etc.

Having a discussion about RAW processing that talks about human perception w/o talking about CIE, color spaces, input and output LUTs, ACES, and several other acronyms feels unintentionally misleading to someone who really wants to dig into the core of digital capture and post-processing.

(side note - I've always found it one of the industry's great ironies that Kodak IP - Bruce Bayer's original 1976 patent - is the single biggest thing that killed Kodak in the industry.)