smooth_loss function

[gaoxiaomingming]

Thank you so much for release your code!!! I have a little question when reading your code.
What does smooth_loss function do? Can I use it to guarantee continuity in x or y direction？

[choyingw]

It aims at regularizing spatial continuity, see layers.py L190 with color pixel awareness. Positions where color pixels have salient gradient will contribution less to the smoothness

[gaoxiaomingming]

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