imghash

README

imghash

A package that implements image hashing algorithms in Go.

Dependencies

• go-fourier package.

  go get github.com/ardabasaran/go-fourier

Documentation

Index

• Variables
• func Ahash(img *image.Image) uint64
• func Dhash(img *image.Image) uint64
• func HammingDistance(d1, d2 uint64) uint64
• func Phash(img *image.Image) uint64
• type ImageHashPair
• type ImageSlice

Variables

var INTERP = resize.Bicubic

Functions

func Ahash

func Ahash(img *image.Image) uint64

Ahash calculates a hash value for the given image. It implements the Average hash algorithm as explained here: http://www.hackerfactor.com/blog/index.php?/archives/432-Looks-Like-It.html Returns the hash of the image in 64 bits integer.

func Dhash

func Dhash(img *image.Image) uint64

Dhash calculates a hash value for the given image. It implements the dHash (gradient) algorithm as explained here: http://www.hackerfactor.com/blog/index.php?/archives/529-Kind-of-Like-That.html Returns the hash of the image in 64 bits integer.

func HammingDistance

func HammingDistance(d1, d2 uint64) uint64

func Phash

func Phash(img *image.Image) uint64

Phash calculates a hash value for the given image. It implements the pHash algorithm as explained here: http://www.hackerfactor.com/blog/index.php?/archives/432-Looks-Like-It.html Returns the hash of the image in 64 bits integer.

Types

type ImageHashPair

type ImageHashPair struct {
	Filename string
	Image    image.Image
	Hash     uint64
}

type ImageSlice

type ImageSlice struct {
	// contains filtered or unexported fields
}