-- Hoogle documentation, generated by Haddock
-- See Hoogle, http://www.haskell.org/hoogle/


-- | Find duplicate images
--   
--   Find similar images using perceptual hashes
@package perceptual-hash
@version 0.1.4.6

module ForeignHash

-- | Doesn't work with <tt>.gif</tt> files
--   
--   This will throw an exception on failure.
foreignFileHash :: FilePath -> IO Word64

module PerceptualHash

-- | DCT based hash. See <a>Zauner</a>.
--   
--   It is suggested that you use this with the Repa backend.
imgHash :: (Ord e, Floating e, Array arr Y e, Array arr X e, Vector (Vector arr) Bool, Vector (Vector arr) e) => Image arr Y e -> Word64
fileHash :: FilePath -> IO (Either String Word64)

-- | See <a>wiki</a>.
hammingDistance :: Bits a => a -> a -> Int