Nico Weber 3a5d20d82b icc: Add a --measure flag that prints color difference in profile ...

If --measure is passed, icc prints the color pairs with the smallest
and largest perceptual difference between them.

Converting 254 * 254 * 254 * 4 = 65 Million colors from sRGB to LAB
and then computing 254 * 254 * 254 * 3 = 49 Million DeltaEs between
them takes a while. On my laptop, it takes 17s to run. So there's
a small progress display.

2023-04-30 05:57:20 +02:00

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