4 ms·
Very cool. Colors are mixed internally in a four-component pigment space instead of RGB. To accelerate the conversion back to RGB for realtime painting, two 48
by pavlov 5y ago
Very cool.
Colors are mixed internally in a four-component pigment space instead of RGB. To accelerate the conversion back to RGB for realtime painting, two 48 MB look-up tables are used.
The choice of these four primary pigments seems like a crucial artistic choice, because any color you choose on a traditional RGB/HSV picker is reinterpreted as a combination of these pigments. Seems like there might be an opportunity here to rethink the traditional color picker.
This algorithm is apparently implemented in a painting app called Rebelle. I haven't heard about it before, but I think I'll buy a license because it looks awesome:
https://www.escapemotions.com/products/rebelle/about https://www.escapemotions.com/products/rebelle/about
- JZL003 5y agoI saw the same thing. I watched the video and they seemed to choose the 4 primary pigments to be close to CMYK, but I was also surprised they didn't make a lookup table for other CMYK pigment alternatives. Seemed like it wouldn't be crazy to do and gives another nice artistic knob to turn. And if it didn't affect much, that would also be convincing that they weren't too sensitive to the 4 pigment selection which is also nice (Although, academic paper cherry picking aside, I was pleasantly surprised how visually close some of their examples were to the read world, for different pigments)