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I ran a test with a photo I took if people are curious. It does a great job for guessing, but of course there is room for improvement. https://i.postimg.cc/Y9d

• mfgs 4y ago
  Cool. Interesting to note that the original is not necessarily the "correct" real world color palette (it's accuracy is subject to camera settings, sensor response, lighting, etc), so the colorized version could in theory be even better than the original in some or all areas of the photo.
  • npteljes 4y ago
    As well as there are multiple desaturation methods, GIMP alone offers at least three, and I'm sure that could influence the outcome as well. https://docs.gimp.org/2.8/en/gimp-tool-desaturate.html https://docs.gimp.org/2.8/en/gimp-tool-desaturate.html
  • hilyen 4y ago
    100% I think my original photo is a bit oversaturated. The real issues I see are where it makes blue things brown and red things green.
• batuhandirek 4y ago
  I love how the emphasis on initial letters are understood and colored red!