#!/home/software/ruby-1.8.7/bin/ruby -w
require 'RMagick'
# Demonstrate the Image#threshold method
img = Magick::Image.read('images/Flower_Hat.jpg').first
# Use a threshold of 55% of QuantumRange.
img = img.threshold(Magick::QuantumRange*0.55)
#img.display
img.write('threshold.jpg')
exit