dup-image-search

This project is to help the Internet Archive find duplicate images for their many images (particularly music album art covers).

Algorithms used

Thanks to http://www.hackerfactor.com/blog/index.php?/archives/432-Looks-Like-It.html for the Simple Hash and pHash (aka perceptive hash, which uses DCT)

MD5 checksum (This may change to SHA.)
Simple Hash
Scale to 8x8, greyscale, hash based on above/below average
DCT (Discrete Cosine Tranform)
Scale to 32x32, greyscale, [DCT](https://en.wikipedia.org/wiki/Discrete_cosine_transform), hash based on above/below average excluding top-left "base" value

Name		Name	Last commit message	Last commit date
Latest commit History 44 Commits
compare_gui		compare_gui
db		db
dct_hash		dct_hash
helpers		helpers
md5		md5
report		report
simple_hash		simple_hash
.gitignore		.gitignore
LICENSE		LICENSE
README.md		README.md
image_utils.py		image_utils.py