golang-imagick图片去除边框（黑边，白边,），添加中文字

图片去除边框（黑边，白边）

package main

import (
"fmt"
"github.com/gographics/imagick/imagick"
"io/ioutil"
"os"
"strconv"
)

func ReadFile(path string) (string, error) {
fi, err := os.Open(path)
if err == nil {
defer fi.Close()
fd, err := ioutil.ReadAll(fi)
return string(fd), err
} else {
return "", err
}

}

func main() {

arg_num := len(os.Args)
if arg_num < 3 {
fmt.Println("./tester [imagepath][trimdistance]")
return
}

imagick.Initialize()
defer imagick.Terminate()

compMW := imagick.NewMagickWand()
compMW.ReadImage(os.Args[1])
trimDistance, _ := strconv.ParseFloat(os.Args[2], 0)

err := compMW.TrimImage(trimDistance)
if err != nil {
fmt.Println("trim failed, ", err)
} else {
compMW.TrimImage(trimDistance)
compMW.WriteImage("./trim.jpg")
fmt.Println("trim success")
}
compMW.Destroy()
}

=========================

追加：为图片添加中文字

===================

func AddTextImage(Args []string) {
imagick.Initialize()
defer imagick.Terminate()
mw := imagick.NewMagickWand()
mw.ReadImage(Args[1])
defer mw.Destroy()

dw := imagick.NewDrawingWand()
defer dw.Destroy()

pw := imagick.NewPixelWand()
pw.SetColor("red")
defer pw.Destroy()
　　#这里需要是字体文件的绝对路径
dw.SetFont("./simsun.ttc")
dw.SetFontSize(20)
dw.SetFillColor(pw)
  dw.SetTextEncoding("UTF-8")
mw.AnnotateImage(dw, 20, 20, 0, "@ 你好 Hello...")
mw.DrawImage(dw)

mw.WriteImage("textlog.jpg")
}

=====================

追加：

=====================

不明白，代码加上fuzz的效果没出来，命令行可以进行，也是醉了。

convert ~/Downloads/video1.jpg -fuzz 10% -trim ./trim.jpg

参考：
http://www.imagemagick.org/Usage/crop/#trim http://blog.csdn.net/newborn2012/article/details/24964577