From K-3D

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BitmapPerceptualDifference is used primarily for regression tests that need to compare bitmap images for equivalence - it is based on a physiological model of human vision that allows it to ignore differences between images that wouldn't normally be perceivable by a human.


BitmapPerceptualDifference is based on the work of Hector Yee, et al, available at

For K-3D we hacked the pdiff sources so we could embed them in a K-3D bitmap modifier.

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