A Tour of Go Images

Package image defines the Image interface:

package image

type Image interface {
    ColorModel() color.Model
    Bounds() Rectangle
    At(x, y int) color.Color
}

(See the documentation for all the details.)

Also, color.Color and color.Model are interfaces, but we'll ignore that by using the predefined implementations color.RGBA and color.RGBAModel. These interfaces and types are specified by the image/color package

package main

import (
    "fmt"
    "image"
)

func main() {
    m := image.NewRGBA(image.Rect(0, 0, 100, 100))
    fmt.Println(m.Bounds())
    fmt.Println(m.At(0, 0).RGBA())
}