本文实例讲述了golang image图片处理方法。分享给大家供大家参考，具体如下：
golang处理图片挺简单的,我是过功能挺简单的,没有过一个缩略图方法.
复制代码 代码如下:
package main
import (
"fmt"
"os"
"image"
"image/color"
"image/draw"
"image/jpeg"
)
func main() {
f1, err := os.Open("1.jpg")
if err != nil {
panic(err)
}
defer f1.Close()
f2, err := os.Open("2.jpg")
if err != nil {
panic(err)
}
defer f2.Close()
f3, err := os.Create("3.jpg")
if err != nil {
panic(err)
}
defer f3.Close()
m1, err := jpeg.Decode(f1)
if err != nil {
panic(err)
}
bounds := m1.Bounds()
m2, err := jpeg.Decode(f2)
if err != nil {
panic(err)
}
m := image.NewRGBA(bounds)
white := color.RGBA{255, 255, 255, 255}
draw.Draw(m, bounds, &image.Uniform{white}, image.ZP, draw.Src)
draw.Draw(m, bounds, m1, image.ZP, draw.Src)
draw.Draw(m, image.Rect(100, 200, 300, 600), m2, image.Pt(250, 60), draw.Src)
err = jpeg.Encode(f3, m, &jpeg.Options{90})
if err != nil {
panic(err)
}
fmt.Printf("ok\n")
}
import (
"fmt"
"os"
"image"
"image/color"
"image/draw"
"image/jpeg"
)
func main() {
f1, err := os.Open("1.jpg")
if err != nil {
panic(err)
}
defer f1.Close()
f2, err := os.Open("2.jpg")
if err != nil {
panic(err)
}
defer f2.Close()
f3, err := os.Create("3.jpg")
if err != nil {
panic(err)
}
defer f3.Close()
m1, err := jpeg.Decode(f1)
if err != nil {
panic(err)
}
bounds := m1.Bounds()
m2, err := jpeg.Decode(f2)
if err != nil {
panic(err)
}
m := image.NewRGBA(bounds)
white := color.RGBA{255, 255, 255, 255}
draw.Draw(m, bounds, &image.Uniform{white}, image.ZP, draw.Src)
draw.Draw(m, bounds, m1, image.ZP, draw.Src)
draw.Draw(m, image.Rect(100, 200, 300, 600), m2, image.Pt(250, 60), draw.Src)
err = jpeg.Encode(f3, m, &jpeg.Options{90})
if err != nil {
panic(err)
}
fmt.Printf("ok\n")
}
希望本文所述对大家Go语言程序设计有所帮助。
