Image Compare in Ruby

Simple Note

Image compare util that will be used in my Selenium Visual Testing later.

Steps

Add chunky_png to Gemfile

gem 'chunky_png'

then run (in terminal)

bundle install

Test Images:

test1.png

test2.png

Compare Scripts:

method_from_web.rb (Copied from Reference)


compare_multi_blocks.rb (Modified from above)


Run .rb files from terminal as below

ruby path/to/compare_multi_blocks.rb

Compare Result

diff.png (by method_from_web.rb)


diff2.png (by compare_multi_blocks.rb)


Reference

Comparing images and creating image diffs