img

README

img

golang image to gray,binaryzation,reverse color

install

go get github.com/no-bibi/img

quick start

package main

import (
	"github.com/no-bibi/img"
)

func main() {

	file, _ := img.Read(`./enter.png`)

	//to make it gray
	grayed := img.Gray(file)
	img.Encode(grayed,`./enter_grap.png`)

	//want binary ? not problem (ps:you can adjust threshold between 0 - 255)
	binary := img.Binary(grayed, 180)
	img.Encode(binary,`./enter_binary.png`)

	//want reverse ? go on with Reverse
	reverse := img.Reverse(binary)
	img.Encode(reverse,`./enter_reverse.png`)
}

result

original:

gray :

binary :

reverse :

licenses

MIT

Documentation

Index

• func Binary(img image.Image, threshold uint8) image.Image
• func Encode(img image.Image, fp string, o ...interface{}) (err error)
• func Gray(img image.Image) image.Image
• func Read(fp string) (img image.Image, err error)
• func Reverse(img image.Image) image.Image

Functions

func Binary

func Binary(img image.Image, threshold uint8) image.Image

convert img to binaryzation rbg >= threshold is black rbg < threshold is white

func Encode

func Encode(img image.Image, fp string, o ...interface{}) (err error)

save file

func Gray

func Gray(img image.Image) image.Image

convert img to gray Gray = (Red * 0.3 + Green * 0.59 + Blue * 0.11)

func Read

func Read(fp string) (img image.Image, err error)

read file

func Reverse

func Reverse(img image.Image) image.Image

convert img to reverse color