atkinson

go-atkinson

Atkinson Dithering with Go.

Example

package main

import (
	"github.com/koyachi/go-atkinson"
	"github.com/koyachi/go-lena"
	"fmt"
	"image/jpeg"
	"log"
	"os"
	"path/filepath"
)

func main() {
	fmt.Printf("processing...\n")
	img, err := lena.Image()
	if err != nil {
		log.Fatal(err)
	}
	img, err = atkinson.Dither(img)
	if err != nil {
		log.Fatal(err)
	}

	path, err := filepath.Abs("result.jpg")
	if err != nil {
		log.Fatal(err)
	}
	file, err := os.Create(path)
	if err != nil {
		log.Fatal(err)
	}
	err = jpeg.Encode(file, img, nil)
	if err != nil {
		log.Fatal(err)
	}
}

Links

• http://www.tannerhelland.com/4660/dithering-eleven-algorithms-source-code/
• http://en.wikipedia.org/wiki/Bill_Atkinson