randomThresholdChannel 339 Magick++/demo/demo.cpp example.randomThresholdChannel( Geometry(4,4), RedChannel); randomThresholdChannel 1449 Magick++/lib/Image.cpp randomThresholdChannel(thresholds_,AllChannels); randomThresholdChannel 526 Magick++/lib/Magick++/Image.h void randomThresholdChannel( const Geometry &thresholds_,