Îõ³h&9 Safe-Inferred¦perceptual-hashDoesn't work with .gif files(This will throw an exception on failure. Safe-InferredÎ Safe-InferredÂÌÚperceptual-hashSee  Àhttps://en.wikipedia.org/wiki/Hamming_distance#Algorithm_examplewiki.perceptual-hashDCT based hash. See  1https://www.phash.org/docs/pubs/thesis_zauner.pdfZauner.8It is suggested that you use this with the Repa backend. perceptual-hash-0.1.4.6-inplace ForeignHashPerceptualHashMedianforeignFileHashhammingDistanceimgHashfileHashmedian