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I highly recommend reading Human color vision / Peter K. Kaiser and Robert M. Boynton. It's a great read if you've gone down the color vision rabbit hole as it

by pippy 5y ago

I highly recommend reading Human color vision / Peter K. Kaiser and Robert M. Boynton. It's a great read if you've gone down the color vision rabbit hole as it has nearly every single topic in regards to human color perception. The biggest surprise for me was that there's still a bit of debate about how exactly neurons in the eye are wired together to produce the color signals that go to the brain.

SpectralName 5y ago
I read an amazing article once that described the representations of color at different processing levels in the human brain. For example, the 3 types of rods in the retina sense R/B/Y intensity, but at some point it is transformed into a different 3d representation with a R-G axis, a B-Y axis, and a greyscale intensity axis. There was some implication that this is information-theoretically optimal in some sense for representing images sampled from the natural world. Anyone know what I'm talking about? The book you mention seems to cover similar ground: http://www.yorku.ca/eye/toc.htm http://www.yorku.ca/eye/toc.htm
- pippy 5y ago
  It seems the article you're talking about is the opponent color process, which here's some great articles about it: https://www.handprint.com/HP/WCL/color2.html https://www.handprint.com/HP/WCL/color2.html https://blog.asmartbear.com/color-wheels.html https://blog.asmartbear.com/color-wheels.html I had some fun modeling the color space in 3d on codepen: https://codepen.io/torleifw/pen/jOwjPxp https://codepen.io/torleifw/pen/jOwjPxp (or a more boring slider option here: https://codepen.io/torleifw/pen/OJgdyPJ https://codepen.io/torleifw/pen/OJgdyPJ) One of latest papers I've read recommended using a matrix to transform color spaces, which i've also done a codepen for. Interestingly the opponent process mirrors the LAB color space, which is soon going to be available in Safari. This is pretty cool and can enable developers to color coordinate easier. I'm going to give the webpage you linked a good read, looks very interesting.
  - SpectralName 5y ago
    It was your first link, thank you! What a great site.
- tout 5y ago
  Was it Rob Pike's post on (the inaccuracy of the term) color blindness? https://commandcenter.blogspot.com/2020/09/color-blindness-is-inaccurate-term.html https://commandcenter.blogspot.com/2020/09/color-blindness-i...

by pippy 5y ago

SpectralName 5y ago

I read an amazing article once that described the representations of color at different processing levels in the human brain. For example, the 3 types of rods in the retina sense R/B/Y intensity, but at some point it is transformed into a different 3d representation with a R-G axis, a B-Y axis, and a greyscale intensity axis. There was some implication that this is information-theoretically optimal in some sense for representing images sampled from the natural world. Anyone know what I'm talking about? The book you mention seems to cover similar ground: http://www.yorku.ca/eye/toc.htm http://www.yorku.ca/eye/toc.htm

pippy 5y ago
It seems the article you're talking about is the opponent color process, which here's some great articles about it: https://www.handprint.com/HP/WCL/color2.html https://www.handprint.com/HP/WCL/color2.html https://blog.asmartbear.com/color-wheels.html https://blog.asmartbear.com/color-wheels.html I had some fun modeling the color space in 3d on codepen: https://codepen.io/torleifw/pen/jOwjPxp https://codepen.io/torleifw/pen/jOwjPxp (or a more boring slider option here: https://codepen.io/torleifw/pen/OJgdyPJ https://codepen.io/torleifw/pen/OJgdyPJ) One of latest papers I've read recommended using a matrix to transform color spaces, which i've also done a codepen for. Interestingly the opponent process mirrors the LAB color space, which is soon going to be available in Safari. This is pretty cool and can enable developers to color coordinate easier. I'm going to give the webpage you linked a good read, looks very interesting.
- SpectralName 5y ago
  It was your first link, thank you! What a great site.
tout 5y ago
Was it Rob Pike's post on (the inaccuracy of the term) color blindness? https://commandcenter.blogspot.com/2020/09/color-blindness-is-inaccurate-term.html https://commandcenter.blogspot.com/2020/09/color-blindness-i...