How to understand the code in utils about encode_ab_ind ...function?

richzhang / colorization-pytorch

PyTorch reimplementation of Interactive Deep Colorization

https://richzhang.github.io/ideepcolor/

MIT License

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Closed xuzhongyou closed 4 years ago

xuzhongyou commented 5 years ago

This is little comment about some functions in utils. Can you explain the ab transformation in detail? Thank you very much.