### Install goimagehash Library

Source: https://github.com/corona10/goimagehash/blob/master/README.md

Use 'go get' to install the goimagehash library. Ensure you are using Go modules for dependency management.

```Go
go get github.com/corona10/goimagehash
```

--------------------------------

### Calculate and Compare Image Hashes

Source: https://github.com/corona10/goimagehash/blob/master/README.md

This example demonstrates how to open image files, decode them, calculate AverageHash and DifferenceHash, compute the distance between hashes, and use extended hashing functions. It also shows serialization and deserialization of hashes.

```Go
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)
}
```

=== COMPLETE CONTENT === This response contains all available snippets from this library. No additional content exists. Do not make further requests.