DHasher

Installation

gem install dhasher

Usage

hash1 = DHasher.hash_from_path('/path/to/image.jpg')
hash2 =  DHasher.hash_from_blob(blob)
distance = DHasher.distance(hash1, hash2)
DHasher.similar?(hash1, hash2) # Considers a distance of 10 and under to be similar

Acknowledgements

Inspired by https://github.com/maccman/dhash and https://github.com/ameingast/cocoaimagehashing