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compuphaseDifferenceRGB compuphase Difference RGB.
compuphaseDifferenceRGB
compuphaseDifferenceRGB(RGB1, RGB2)
RGB color sample
RGB color reference
Delta E
Thiadmer Riemersma, 2012 CompuPhase http://www.compuphase.com/cmetric.htm
# NOT RUN { compuphaseDifferenceRGB(c(124,63,78),c(241,65,78)) # }
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