3 ms·

Point 2 is the most important one, and the most egregious error. Even most browsers implement it wrong (at least the last time I checked, I confirmed it again w

Point 2 is the most important one, and the most egregious error. Even most browsers implement it wrong (at least the last time I checked, I confirmed it again with Edge). Here is the most popular article about this problem [1]. Warning: once you start noticing incorrect color blending done in sRGB space, then you will see it everywhere. [1] http://www.ericbrasseur.org/gamma.html http://www.ericbrasseur.org/gamma.html

londons_explore 4y ago
Browsers now 'deliberately' do it wrong, because web developers have come to rely on the fact that a 50/50 blend of #000000 and #FFFFFF is #808080
- unconed 4y ago
  Linear RGB blending also requires >8 bit per channel for the result to avoid noticeable banding. It is unquestionably superior though.
- planede 4y ago
  I'm a little bit sympathetic for doing it wrong on gradients (having said that SVG spec has an opt-in to do the interpolation in linear colorspace, and browsers don't implement it). But not for images.
account42 4y ago
Browsers (and other tools) can't even agree on the color space for some images, e.g. "Portable" Network Graphics.
zokier 4y ago
I imagine that beyond just using linearized srgb using perceptually uniform colorspace such as oklab would bring further improvement. Although I suppose the effect might be somewhat subtle in most real-world images.
- planede 4y ago
  For downscaling, I doubt that. If you literally squint your eyes or unfocus your eyes, then colors you see will be mixed in a linear colorspace. It makes sense for downscaling to follow that. Upscaling is much more difficult.
bsenftner 4y ago
When image generating AIs first appeared, the color space interpolations were terribly wrong. One could see hue rainbows practically anywhere blending occurred.
thrdbndndn 4y ago
Another classic: https://www.youtube.com/watch?v=LKnqECcg6Gw https://www.youtube.com/watch?v=LKnqECcg6Gw
sundarurfriend 4y ago
Did the link go down between when you posted this and now? It now lead to http://suspendeddomain.org/index.php?host=www.ericbrasseur.org http://suspendeddomain.org/index.php?host=www.ericbrasseur.o...

londons_explore 4y ago

Browsers now 'deliberately' do it wrong, because web developers have come to rely on the fact that a 50/50 blend of #000000 and #FFFFFF is #808080

unconed 4y ago
Linear RGB blending also requires >8 bit per channel for the result to avoid noticeable banding. It is unquestionably superior though.
planede 4y ago
I'm a little bit sympathetic for doing it wrong on gradients (having said that SVG spec has an opt-in to do the interpolation in linear colorspace, and browsers don't implement it). But not for images.

account42 4y ago

Browsers (and other tools) can't even agree on the color space for some images, e.g. "Portable" Network Graphics.

zokier 4y ago

I imagine that beyond just using linearized srgb using perceptually uniform colorspace such as oklab would bring further improvement. Although I suppose the effect might be somewhat subtle in most real-world images.

planede 4y ago
For downscaling, I doubt that. If you literally squint your eyes or unfocus your eyes, then colors you see will be mixed in a linear colorspace. It makes sense for downscaling to follow that. Upscaling is much more difficult.

bsenftner 4y ago

When image generating AIs first appeared, the color space interpolations were terribly wrong. One could see hue rainbows practically anywhere blending occurred.

thrdbndndn 4y ago

Another classic: https://www.youtube.com/watch?v=LKnqECcg6Gw https://www.youtube.com/watch?v=LKnqECcg6Gw

sundarurfriend 4y ago

Did the link go down between when you posted this and now? It now lead to http://suspendeddomain.org/index.php?host=www.ericbrasseur.org http://suspendeddomain.org/index.php?host=www.ericbrasseur.o...