helpers

Documentation

Index

• func HammingDistance(hashOne, hashTwo string) (int, error)
• func PdqHashToBinary(input string) (string, error)
• func ResizeIfNeeded(img image.Image) image.Image

Functions

func HammingDistance

func HammingDistance(hashOne, hashTwo string) (int, error)

Calculate the hamming distance between two PDQ hashes. Input hashes should be 64-character hexidecimal strings. Returns a value between 0 (identical) and 256 (completely different).

func PdqHashToBinary

func PdqHashToBinary(input string) (string, error)

Converts a 64-character hexidecimal PDQ hash into a 256-character binary string representation, useful for inserting into some vector stores.

func ResizeIfNeeded

func ResizeIfNeeded(img image.Image) image.Image