Conversation
mia (developer mode)
mia@shrimptest.0x0.st
Edited 19 hours ago
studying digital color science and figuring out how incredibly wrong a lot of image processing software and even widespread standards like CSS are about color, much stuff we could be doing better but aren’t (like the 1931 color primaries and observers i mentioned before; you can calibrate displays to what measures as identical in that system but looks very different to human eyes)
fucking CSS specifying effects to be applied in non-linear sRGB, SVG renderers basically doing all their alpha blending the same way, image editing software that SHOULD know better applying scaling and rotation without linearizing first, confusing terms like saturation, chroma, colorfulness (they all mean different things)
the fact that made-up bullshit like HSL/HSV/HWB is still in use anywhere… these are derived by rotating RGB around a bit and only exist because early computers were too slow for color math, and RGB is a radiometric space, not a perceptual space. you DO NOT DO COLOR MANIPULATION IN A RADIOMETRIC SPACE. they’re completely useless.
fucking CSS specifying effects to be applied in non-linear sRGB, SVG renderers basically doing all their alpha blending the same way, image editing software that SHOULD know better applying scaling and rotation without linearizing first, confusing terms like saturation, chroma, colorfulness (they all mean different things)
the fact that made-up bullshit like HSL/HSV/HWB is still in use anywhere… these are derived by rotating RGB around a bit and only exist because early computers were too slow for color math, and RGB is a radiometric space, not a perceptual space. you DO NOT DO COLOR MANIPULATION IN A RADIOMETRIC SPACE. they’re completely useless.
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@mia Wait until you find out how the alpha channel works and how there's no metadata standard to tell software whether something is premultiplied or not.
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@mia
> image editing software that SHOULD know better applying scaling and rotation without linearizing first
At least one thing i knew about. Idk how a company can make so much money with software that does it's job so wrong
> image editing software that SHOULD know better applying scaling and rotation without linearizing first
At least one thing i knew about. Idk how a company can make so much money with software that does it's job so wrong
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mia (developer mode)
mia@shrimptest.0x0.st
@snacks a couple years ago krita got it right in a bunch of places but then messed up the rotations. i hope that’s fixed now
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mia (developer mode)
mia@shrimptest.0x0.st
@phnt i knew about that. that’s not even bad compared to the other color crimes that are much more common
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mia (developer mode)
mia@shrimptest.0x0.st
@phnt almost nothing gets basic RGB blending right. open up stinkscape, draw two rectangles red and green on top of each other, and rotate one of them. see the brown shitline along the edges? that’s incorrect blending. it also has zero useful color pickers. best it has is HSLuv, which sucks because CIELab sucks. that’s not a tool for artists, that’s a pile of garbage
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mia (developer mode)
mia@shrimptest.0x0.st
@phnt the sad part is it probably has to do blending that way because the W3C is a bunch of industry terrorists
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