imagehash

package

v0.1.3 Latest Latest Go to latest Published: May 29, 2022 License: MIT Imports: 8 Imported by: 0

Details

Valid go.mod file

The Go module system was introduced in Go 1.11 and is the official dependency management solution for Go.
Redistributable license

Redistributable licenses place minimal restrictions on how software can be used, modified, and redistributed.
Tagged version

Modules with tagged versions give importers more predictable builds.
Stable version

When a project reaches major version v1 it is considered stable.
Learn more about best practices

Repository

github.com/charCharacter/imagemeta

Documentation ¶

Overview ¶

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

Index ¶

Constants
Variables
type Ahash
- func NewAHash(img image.Image) (ahash Ahash, err error)
type Phash
- func NewPHash(img image.Image) (phash Phash, err error)
- func NewPHashFast(img image.Image) (phash Phash, err error)

Constants ¶

View Source

const (
	NilPhash    Phash = 0
	NilAhash    Ahash = 0
	LengthPHash       = 8
)

Constants

Variables ¶

View Source

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

Variables

Functions ¶

This section is empty.

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 (*Ahash) DecodeMsg ¶

func (z *Ahash) DecodeMsg(dc *msgp.Reader) (err error)

DecodeMsg implements msgp.Decodable

func (Ahash) EncodeMsg ¶

func (z Ahash) EncodeMsg(en *msgp.Writer) (err error)

EncodeMsg implements msgp.Encodable

func (Ahash) MarshalMsg ¶

func (z Ahash) MarshalMsg(b []byte) (o []byte, err error)

MarshalMsg implements msgp.Marshaler

func (Ahash) Msgsize ¶

func (z Ahash) Msgsize() (s int)

Msgsize returns an upper bound estimate of the number of bytes occupied by the serialized message

func (*Ahash) UnmarshalMsg ¶

func (z *Ahash) UnmarshalMsg(bts []byte) (o []byte, err error)

UnmarshalMsg implements msgp.Unmarshaler

func NewPHash ¶

func NewPHash(img image.Image) (phash Phash, err error)

NewPHash 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

func NewPHashFast ¶

func NewPHashFast(img image.Image) (phash Phash, err error)

NewPHashFast 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 Has been manually optimized for perforance and reduced memory footprint.

func (*Phash) Decode ¶

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

func (*Phash) DecodeMsg ¶

func (z *Phash) DecodeMsg(dc *msgp.Reader) (err error)