yeah, that’s true. @Thomas_Mansencal Hopefully I can develop a bit further…
I think OpenDRT is a work-in-progress experiment. The perceptual checkbox and saturation slider are indeed attempts of addressing the Abney and Hunt Effects. But I guess they are not necessarily meant to stay in the final version of OpenDRT (and rather go in a LMT) ?
But I guess this leads to the question of :
- What would go in the Output transform itself ?
- What would go in a “default” LMT ?
Jed did an interesting list already of the different modules in the Output Transform :
- Input Conversion
- Gamut Mapping
- Whitepoint
- Rendering Transform
- Display Gamut Conversion
- Inverse EOTF
- Clamp
I’d be curious to know if everybody agrees with this list/structure. Furthermore you already listed some of the CAM “Effects” here (back in February ! Thanks for that !) :
Now that we have opened the can of worms, shall we talk about colour appearance modeling?
- Surround/Viewing Conditions
- Stevens Effect
- Hunt Effect
- Abney Effect
- Bezold-Brücke Effect
- And the remaining ones of Advanced Colorimetry
I have also read your answer about the Hunt Effect saturation slider and I thought it was really great ! I’d be of course quite interested if you have some kind of solution/hint for each of the “Effects”…
As you can you probably tell, I have a thing for listing stuff. It helps me to think. And hopefully it would help to see on which point the VWG agrees/disagrees (per-channel, chromaticity linear…) so we can keep moving forward.
Chris