Unsharp masking info overlay #9
Description
In the adaptive mode of unsharp masking give the option to highlight the areas that belong to the 1) transition region between min and max amount, 2) dark region using min amount. It can be done e.g. by overlaying a blue (e.g.) checkered (e.g.) pattern over the region(s) in question. Consider that it needs to be reasonably fast also in "CPU & bitmaps" mode.