pXdoppelganger

what can it do for me?

• pXdoppelganger can compare two images for you.
• pXdoppelganger converts the images into bitstreams and thus analyze every pixcel.
• pXdoppelganger can tell you if those images are equal and what the percentual change is.
• pXdoppelganger can also show you the "difference" image between the two images.

what are the restrictions?

• pXdoppelganger will only work with PNG files.

how do I use it?

install the gem:

gem install pxdoppelganger

and use it:

require 'pxdoppelganger'

provide paths to images:

images = PXDoppelganger::Images.new('~/Downloads/Image1.png', '~/Downloads/Image2.png')

see if images are equal:

images.equal?
=> true/false

get the difference of the two images (in percent):

images.difference
=> 1.3849177058385036

save the difference-image:

images.save_difference_image('~Documents/analysis/diff_image.png')

how do I contribute?

open pull request

license

MIT: http://opensource.org/licenses/MIT