thewraven / img

Package img provides basic image manipulation for RGBA and Grayscale images in Golang.

Img

Package img provides basic image manipulation for RGBA and Grayscale images in Golang.

Install

Assuming you have a go installation up and running:

go get github.com/thewraven/img

Quickstart

package main

import (
    "image/jpeg"
    "github.com/thewraven/img"
    "os"
)

func main() {
    file, _ := os.Open("purple_flower_peter_harrison.jpg")
    jpegImage, _ := jpeg.Decode(file)
    defer file.Close()
    //Create an RGBA image from a image.Image
    colorImage := img.NewColorFromImage(jpegImage)
    //Split channels from image
    justRed := img.Red(colorImage)
    justGreen := img.Green(colorImage)
    //Merge two images into one
    justYellow := img.Add(justRed, justGreen)

    maxx := colorImage.Bounds().Max.X - 1
    midx := maxx / 2

    //Split image vertically
    halfYellow := justYellow.WithCols(0, midx)
    halfGreen := justGreen.WithCols(midx, maxx)

    //Join two images (It's chainable!)
    resultImage := halfYellow.ConcatRight(halfGreen)

    //Save the image
    newImg, _ := os.Create("result.jpg")
    defer newImg.Close()
    jpeg.Encode(newImg, resultImage, &jpeg.Options{Quality: 80})
}

Result

Documentation

See Godoc

License

This project is licenced under the GPLv3 License