A library for hashing images and comparing those hashes for similarity. This library implements the Average and Difference hash algorithms described in the following articles.
http://hackerfactor.com/blog/index.php?/archives/432-Looks-Like-It.html
http://hackerfactor.com/blog/index.php?archives/529-Kind-of-Like-That.html
This package is available on NuGet: https://nuget.org/packages/ImageHasher
PM> Install-Package ImageHasher
Usage: https://github.com/raysohn/ImageHasher/tree/master/ImageHasher.Example