We've never actually revealed this before, so I'll add one more juicy bit: The model ran on the phone's CPU, not GPU, because of weird memory management issues when you're trying to push the limits. The quality of images wound up being significantly better than open source.https://twitter.com/citnaj/status/1316789600531017728 …
Even within a scene you can have multiple colors map to the same greyscale- the "luminance". There's a many to one fit. If this wasn't the case, the neural networks I'd train would find it absolutely trivial to arrive at this mapping! But alas, it's ambiguous. So...purple.
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@citnaj If you're talking about the pre-made Spectrum pallete in Photoshop, that isn't exactly what I meant. The mosaic table below is what I'm talking aboutpic.twitter.com/jbJpS9HmLx
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