randomThreshold 309 Magick++/demo/demo.cpp example.randomThreshold( Geometry(2,2) ); randomThreshold 315 Magick++/demo/demo.cpp example.randomThreshold( Geometry(3,3) ); randomThreshold 321 Magick++/demo/demo.cpp example.randomThreshold( Geometry(4,4) ); randomThreshold 445 Magick++/demo/demo.cpp example.randomThreshold( Geometry((size_t) (0.3*QuantumRange), randomThreshold 1231 Magick++/lib/Magick++/Image.h void randomThreshold(const Geometry &thresholds_);