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colors rule (lemmy.world)

submitted 3 months ago by AdrianTheFrog to c/[email protected]

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my reasoning: the actual colors we can see -> the wavelengths that we can extrapolate to -> basically extrapolated wavelengths plus an 'unpure-ness' factor -> not even real wavelengths (ok well king blue and maybe lavender if I'm being generous could be)

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[–] [email protected] 3 points 3 months ago (1 children)

So how is red not a slippery slope for the same reasons?

[–] AdrianTheFrog 1 points 3 months ago* (last edited 3 months ago) (1 children)

IDK, I can't tell from looking at the 2015 CIE CMFs (I think these are the most accurate? also I used the firefox plugin "unpaywall" to see them as sci-hub wasn't working) if there are any completely identifiable red colors or not. I initially assumed there were, but I guess I don't really know (I had assumed any perceived color could be made from a standard red green and blue, but now I also don't know if that's true).

edit: if that assumption is true than there would be no way to produce photons of different wavelengths in a way that looks like a fully saturated red

also the falloff at the end of the spectrum might mess with that a little, it looks like there is a continuously varying ratio of red to green along the end of the spectrum, but I can't really tell

edit2: it also varies somewhat with age and among individuals apparently, so that might complicate things further

[–] [email protected] 1 points 3 months ago* (last edited 3 months ago) (1 children)

And your brainhole specifics - everything gets processed like this (even monitors with subpixels use a lot of this stuff, or even why you can watch 24p movies):
wiki/White%27s_illusion

[–] AdrianTheFrog 1 points 3 months ago (1 children)

yea, there's also the afterimage / auto white balance factor

also those are fun optical illusions

mildly unrelated, but have you seen https://en.wikipedia.org/wiki/Caf%C3%A9_wall_illusion and https://www.shadertoy.com/view/4dBfWK

[–] [email protected] 1 points 3 months ago

Yes, brains are wild!