DiffImg is a simple image comparison tool which take two images with the same size as input. Some statitics are computed and the positions where pixel differ are displayed as a color mask.. I am not the original author. Latest pre-release is here: https://github.com/lingo/diffimg-xbee/releases/tag/2.3.0-lingo
http://thehive.xbee.net/index.php?module=pages&func=display&pageid=11
