image_hash

package

v0.7.2 Latest Latest Go to latest Published: Feb 21, 2024 License: MIT Imports: 9 Imported by: 0

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Repository

github.com/donetkit/contrib

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Open Source Insights

Documentation ¶

Overview ¶

Package imagehash processes a Perception hash and Average hash from an image.

Index ¶

Variables
func EncodeBlurHashFast(img image.Image) (string, error)
type Ahash
- func NewAHash(img image.Image) (ahash Ahash, err error)
type PHash256
- func NewPHash256(img image.Image) (phash PHash256, err error)
type PHash64
- func NewPHash64(img image.Image) (phash PHash64, err error)
type Phash

Constants ¶

This section is empty.

Variables ¶

View Source

var (
	ErrImageObject = errors.New("image object can not be nil")
)

Variables

Functions ¶

func EncodeBlurHashFast ¶

func EncodeBlurHashFast(img image.Image) (string, error)

Types ¶

func NewAHash ¶

func NewAHash(img image.Image) (ahash Ahash, err error)

NewAHash is an Average Hash fuction that returns a hash computation of average hash. Implementation follows http://www.hackerfactor.com/blog/index.php?/archives/432-Looks-Like-It.html

func NewPHash256 ¶

func NewPHash256(img image.Image) (phash PHash256, err error)

NewPHash256 is a Perception Hash function returns a 256bit hash computation Implementation follows: http://www.hackerfactor.com/blog/index.php?/archives/432-Looks-Like-It.html Optimized for performance and reduced memory footprint.

func (*PHash256) Decode ¶

func (ph *PHash256) Decode(buf []byte)

func (PHash256) Distance ¶

func (ph PHash256) Distance(hash PHash256) uint

Distance between Phash values

func (PHash256) Encode ¶

func (ph PHash256) Encode(buf []byte)

func (PHash256) String ¶

func (ph PHash256) String() string

type PHash64 ¶

type PHash64 uint64

PHash64 is a 64bit Perception Hash

func NewPHash64 ¶

func NewPHash64(img image.Image) (phash PHash64, err error)

NewPHash64 is a Perception Hash function returns a hash computation of phash. Implementation follows: http://www.hackerfactor.com/blog/index.php?/archives/432-Looks-Like-It.html Optimized for performance and reduced memory footprint.

func (*PHash64) Decode ¶

func (ph *PHash64) Decode(src []byte)

func (PHash64) Distance ¶

func (ph PHash64) Distance(hash PHash64) uint8