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10th June 2018, 01:04 | #11 | Link |
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Here is a similar test on a 0-255, Y,U,V pattern (0-255 Y just copied to the U,V planes), and again 8x back and forth, and then to TV range
You end up with Y 16-235 , U,V 16-240 hard limits (so chroma=100 for smooth levels is probably correct value for typical usage scenarios), but the average is skewed with coloryuv , resulting in the colorization of greyscale values. Also see the line artifacts again with coloryuv (smoothlevels had dither disabled) |
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