
A threshold value of 128 will produce an output image in which black and white are in equal proportion. A value greater than 128 would mean more bright than dark, and a value less than 128 would mean more dark than bright.
When reducing to 4bpp, a palette containing colors to use for the output image can optionally be specified. If this palette is not supplied, a default palette will be used.
System.Object
ImageGear.Processing.ImGearDiffuseReductionOptions