ImageMagick.FredsScripts.TwoColorThresh (nuget): Automatically thresholds an image to binary (b/w) format using an adaptive spatial subdivision color reduction technique. This is the -colors IM operator as implemented with slight modification from Anthony's Examples at http://www.imagemagick.org/Usage/quantize/#two_color. For algorithm details, see http://www.imagemagick.org/script/quantize.php.
Keywords: Fred|Weinhaus|ImageMagick|TwoColorThresh