颜色表取图片

main.go

package main

import (
	"fmt"
	"image"
	"image/color"
	"image/png"
	"os"
)

func main() {
	w, h := 503, 122
	img := image.NewRGBA(image.Rect(0, 0, w, h))
	for i := 0; i < w; i++ {
		for j := 0; j < h; j++ {
			var r, g, b uint8
			_, err := fmt.Scanf("%d,%d,%d\n", &r, &g, &b)
			if err != nil {
				panic(err)
			}
			img.Set(i, j, color.RGBA{r, g, b, 255})
		}
	}

	f, err := os.Create("image.png")
	if err != nil {
		panic(err)
	}

	if err := png.Encode(f, img); err != nil {
		f.Close()
		panic(err)
	}

	if err := f.Close(); err != nil {
		panic(err)
	}
}