#!/home/software/ruby-1.8.7/bin/ruby -w
# Demonstrate the random_channel_threshold method
require 'RMagick'
img = Magick::Image.read('images/Flower_Hat.jpg').first
geom = Magick::Geometry.new(Magick::QuantumRange/2)
img2 = img.random_threshold_channel(geom, Magick::RedChannel)
img2.write('random_threshold_channel.jpg')
exit