I've been lucky enough to get a preview of @CpnTaters 's DeOldify based anime colorizer that he's releasing soon as a Colab. This is truly amazing.pic.twitter.com/FZn9uQ5oe2
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I think the interesting part is that it got some sense of depth when coloring the flat drawing (depth in the wings). It is not a kind of challenge you see in deoldifying natural pictures.
Or maybe the challenge was always there but I didn't think about it 

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