This is a perceptual image hash calculation tool based on algorithm descibed in Block Mean Value Based Image Perceptual Hashing by Bian Yang, Fan Gu and Xiamu Niu.
This script requires Python 2.x or Python 3 and Python Imaging (PIL) 1.1.6 or above.
blockhash.py [list of images] for calculating hashes.
blockhash.py --help for the list of options.
Copyright 2014 Commons Machinery http://commonsmachinery.se/
Distributed under an MIT license, please see LICENSE in the top dir.