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In/Out pixel operation and variations.

The pattern loops (a number of times) over all pixels in the image and ferches/offers each pixel from/to a pixel functor. With the In variation of the pattern the pixel functor is asked to produce a pixel value for each position in the image. With the Out variation of the pattern the pixel functor is offered the pixel value at each position to do something with it.

Tags for variations:

DirectionCategory

HxPixOpInTag or HxPixOpOutTag

TransVarianceCategory

HxPixOpTransVarTag or HxPixOpTransInVarTag

PhaseCategory

HxPixOp1PhaseTag or HxPixOp2PhaseTag or HxPixOpNPhaseTag

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