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Programming language: Go
Tags: Images    
Latest version: v1.0.2

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goimagehash

Inspired by imagehash

A image hashing library written in Go. ImageHash supports:

Installation

go get github.com/corona10/goimagehash

Special thanks to

Usage

func main() {
        file1, _ := os.Open("sample1.jpg")
        file2, _ := os.Open("sample2.jpg")
        defer file1.Close()
        defer file2.Close()

        img1, _ := jpeg.Decode(file1)
        img2, _ := jpeg.Decode(file2)
        hash1, _ := goimagehash.AverageHash(img1)
        hash2, _ := goimagehash.AverageHash(img2)
        distance, _ := hash1.Distance(hash2)
        fmt.Printf("Distance between images: %v\n", distance)

        hash1, _ = goimagehash.DifferenceHash(img1)
        hash2, _ = goimagehash.DifferenceHash(img2)
        distance, _ = hash1.Distance(hash2)
        fmt.Printf("Distance between images: %v\n", distance)
        width, height := 8, 8
        hash3, _ = goimagehash.ExtAverageHash(img1, width, height)
        hash4, _ = goimagehash.ExtAverageHash(img2, width, height)
        distance, _ = hash3.Distance(hash4)
        fmt.Printf("Distance between images: %v\n", distance)
        fmt.Printf("hash3 bit size: %v\n", hash3.Bits())
        fmt.Printf("hash4 bit size: %v\n", hash4.Bits())

        var b bytes.Buffer
        foo := bufio.NewWriter(&b)
        _ = hash4.Dump(foo)
        foo.Flush()
        bar := bufio.NewReader(&b)
        hash5, _ := goimagehash.LoadExtImageHash(bar)
}

Release Note

v1.0.1

  • Perception/ExtPerception hash creation times are reduced

v1.0.0

IMPORTANT goimagehash v1.0.0 does not have compatible with the before version for future features

v0.3.0

  • Support DifferenceHashExtend.
  • Support AverageHashExtend.
  • Support PerceptionHashExtend by @TokyoWolFrog.

v0.2.0

  • Perception Hash is updated.
  • Fix a critical bug of finding median value.

v0.1.0

  • Support Average hashing
  • Support Difference hashing
  • Support Perception hashing
  • Use bits.OnesCount64 for computing Hamming distance by @dominikh
  • Support hex serialization methods to ImageHash by @brunoro