LibGfx/JPEG: Add a deringing pass to the encoder #26313
Open
+74
−3
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The idea is described here https://kornel.ski/deringing/. And allows reducing the noise around sharp white edges. This is visible when encoding an image like
buggie.png. One nice aspect of the optimization is that it only affects macroblocks where it can help.Before:

After:

Diff:
