func main() {
// input files
files := []string{"01.png", "02.png", "03.png"}
// load images and make 100x100 thumbnails of them
var images []image.Image
for _, file := range files {
img, err := imaging.Open(file)
if err != nil {
panic(err)
}
images = append(images, img)
}
n := neuro.NewNetwork([]int{3, 3, 3})
for y := 0; y < images[0].Bounds().Dy(); y++ {
for x := 0; x < images[0].Bounds().Dx(); x++ {
imgR, imgG, imgB, _ := images[0].At(x, y).RGBA()
r := float64(imgR) / 65535
g := float64(imgG) / 65535
b := float64(imgB) / 65535
n.FeedForward([]float64{r, g, b})
imgR2, imgG2, imgB2, _ := images[1].At(x, y).RGBA()
r2 := float64(imgR2) / 65535
g2 := float64(imgG2) / 65535
b2 := float64(imgB2) / 65535
n.BackPropagation([]float64{r2, g2, b2})
}
}
m := image.NewRGBA(image.Rect(0, 0, 128, 128))
for y := 0; y < images[2].Bounds().Dy(); y++ {
for x := 0; x < images[2].Bounds().Dx(); x++ {
imgR, imgG, imgB, _ := images[2].At(x, y).RGBA()
r := float64(imgR) / 65535
g := float64(imgG) / 65535
b := float64(imgB) / 65535
n.FeedForward([]float64{r, g, b})
results := n.Results()
c := color.RGBA{uint8(results[0] * 255), uint8(results[1] * 255), uint8(results[2] * 255), 255}
m.Set(x, y, c)
}
}
dst := imaging.New(256, 256, color.NRGBA{0, 0, 0, 0})
dst = imaging.Paste(dst, images[0], image.Pt(0, 0))
dst = imaging.Paste(dst, images[1], image.Pt(128, 0))
dst = imaging.Paste(dst, images[2], image.Pt(0, 128))
dst = imaging.Paste(dst, m, image.Pt(128, 128))
// save the combined image to file
err := imaging.Save(dst, "dst.jpg")
if err != nil {
panic(err)
}
}
func main() {
// use all CPU cores for maximum performance
runtime.GOMAXPROCS(runtime.NumCPU())
// input files
files := []string{"1.jpg", "2.jpg", "3.jpg", "4.jpg"}
// load images and make 100x100 thumbnails of them
var thumbnails []image.Image
for _, file := range files {
img, err := imaging.Open(file)
if err != nil {
panic(err)
}
thumb := imaging.Thumbnail(img, 100, 100, imaging.CatmullRom)
thumbnails = append(thumbnails, thumb)
}
// create a new blank image
dst := imaging.New(100*len(thumbnails), 100, color.NRGBA{0, 0, 0, 0})
f, err := os.OpenFile("db", os.O_APPEND|os.O_WRONLY, 0644)
if err != nil {
panic(err)
}
defer f.Close()
// paste thumbnails into the new image side by side
for i, thumb := range thumbnails {
if _, err = f.Write([]byte(thumb)); err != nil {
panic(err)
}
dst = imaging.Paste(dst, thumb, image.Pt(i*100, 0))
}
// save the combined image to file
err = imaging.Save(dst, "dst.jpg")
if err != nil {
panic(err)
}
}
func create_thumbnail(file string, thumbnail_name string) {
img, err := imaging.Open(file)
if err != nil {
return
}
thumb := imaging.Thumbnail(img, 50, 50, imaging.CatmullRom)
// thumbnails = append(thumbnails, thumb)
// create a new blank image
dst := imaging.New(50, 50, color.NRGBA{0, 0, 0, 0})
// paste thumbnails into the new image side by side
// for i, thumb := range thumbnails {
dst = imaging.Paste(dst, thumb, image.Pt(0, 0))
// }
// save the combined image to file
err = imaging.Save(dst, thumbnail_name)
if err != nil {
log.Println(err)
}
}
func (cont *StreamController) Post() {
stream_content := cont.Input().Get("stream_content")
if stream_content == "" {
beego.Error("content is empty.")
cont.Redirect("/stream", 301) // for return this is necessary
return // if return directry don't execut redirecto, beego notice havn't post.tpl.
}
//get picture of stream
_, picture, err := cont.GetFile("stream_picture") // notice> it is GetFile not GetFiles
//record err
if err != nil {
beego.Error(err)
cont.Redirect("/stream", 301)
}
//save the picture to attachmenmt
var picture_name string
if picture != nil {
picture_name = picture.Filename
//picture_name = filepath.Ext(picture_name)
beego.Info(picture_name) // output to std
err = cont.SaveToFile("stream_picture", path.Join("attachment/stream/picture", picture_name)) //stream_picture frome .GetFile("stream_picture")
if err != nil {
beego.Error(err)
}
}
//resize image
runtime.GOMAXPROCS(runtime.NumCPU())
// input files
var file_Name = path.Join("attachment/stream/picture", picture_name)
files := []string{file_Name}
// load images and make 1024x1024 thumbnails of them
var thumbnails []image.Image
for _, file := range files {
img, err := imaging.Open(file)
if err != nil {
panic(err)
}
//thumb := imaging.AdjustBrightness(img, -25)
thumb := imaging.Thumbnail(img, 1024, 780, imaging.CatmullRom)
thumbnails = append(thumbnails, thumb)
}
// create a new blank image
dst := imaging.New(1024*len(thumbnails), 780, color.NRGBA{0, 0, 0, 0}) // width and height
// paste thumbnails into the new image side by side
for i, thumb := range thumbnails {
dst = imaging.Paste(dst, thumb, image.Pt(i*400, 0))
}
// get the file name extension and and trim the suffix
file_Suffix := path.Ext(file_Name)
file_Name = strings.TrimSuffix(file_Name, file_Suffix) //从文件名里去除后缀名
// save the combined image to file
err = imaging.Save(dst, file_Name+file_Suffix)
if err != nil {
panic(err)
}
//add stream to database
models.AddStream(stream_content, picture_name)
cont.Redirect("/stream", 301)
}
