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bomberstudios/vdiff.rb

Created September 30, 2008 12:01
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A crude image comparison tool
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vdiff.rb
#!/usr/bin/env ruby
#
# A crude image comparison tool.
#
# Usage:
# vdiff original_image modified_image
require "rubygems"
require "RMagick"
original = Magick::Image.read(ARGV[0]).first
new_version = Magick::Image.read(ARGV[1]).first
comparison = original.composite(new_version, Magick::CenterGravity, Magick::DifferenceCompositeOp)
comparison.write("diff.png")
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