g3

Documentation

Overview

Package g3 implements data encoding using the CCITT (renamed to ITU-T in 1993) fax standard in its Group 3, One-Dimensional (G31D) variant.

It follows the standard ITU-T T.4 (07/2003), section 4.1: https://www.itu.int/rec/T-REC-T.4-200307-I/en

Index

• type Encoder
  • func NewEncoder(w io.Writer) *Encoder
  • func (e *Encoder) Encode(m *image.Gray) error

Types

type Encoder

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

Encoder is a Group 3 One-Dimensional fax encoder.

func NewEncoder

func NewEncoder(w io.Writer) *Encoder

NewEncoder returns a ready-to-use Encoder, writing to w.

func (*Encoder) Encode

func (e *Encoder) Encode(m *image.Gray) error

Encode compresses the specified image using Group 3 One-Dimensional fax encoding.

If the resulting bit stream does not end on a byte boundary, zero bits are added as padding.