#!/usr/bin/ruby -w require 'RMagick' # Demonstrate the Image#normalize method before = Magick::Image.read('images/Hot_Air_Balloons.jpg').first before.scale!(250.0/before.rows) after = before.normalize # Make a before-and-after composite after.crop!(after.columns/2, 0, after.columns/2, after.rows) composite = before.composite(after, Magick::EastGravity, Magick::OverCompositeOp) composite = composite.border(1,1,'black') #composite.display composite.write('normalize.jpg') exit