func faceDetect(i *image.Image, o *image.Image) {
cvImage := opencv.FromImage(*i)
_, err := os.Stat(faceDetectionHaarCascade)
if err != nil {
fmt.Println(err)
os.Exit(1)
}
cascade := opencv.LoadHaarClassifierCascade(faceDetectionHaarCascade)
faces := cascade.DetectObjects(cvImage)
gc := draw2dimg.NewGraphicContext((*o).(*image.RGBA))
if debug == true {
fmt.Println("Faces detected:", len(faces))
}
for _, face := range faces {
if debug == true {
fmt.Printf("Face: x: %d y: %d w: %d h: %d\n", face.X(), face.Y(), face.Width(), face.Height())
}
draw2dkit.Ellipse(
gc,
float64(face.X()+(face.Width()/2)),
float64(face.Y()+(face.Height()/2)),
float64(face.Width()/2),
float64(face.Height())/2)
gc.SetFillColor(color.RGBA{255, 0, 0, 255})
gc.Fill()
}
}
func test(t *testing.T, draw sample) {
// Initialize the graphic context on an RGBA image
dest := image.NewRGBA(image.Rect(0, 0, 297, 210.0))
gc := draw2dimg.NewGraphicContext(dest)
// Draw Android logo
output, err := draw(gc, "png")
if err != nil {
t.Errorf("Drawing %q failed: %v", output, err)
return
}
// Save to png
err = draw2dimg.SaveToPngFile(output, dest)
if err != nil {
t.Errorf("Saving %q failed: %v", output, err)
}
}
func imgPng(w http.ResponseWriter, r *http.Request) *appError {
w.Header().Set("Content-type", "image/png")
// Initialize the graphic context on an RGBA image
dest := image.NewRGBA(image.Rect(0, 0, 297, 210.0))
gc := draw2dimg.NewGraphicContext(dest)
// Draw sample
android.Draw(gc, 65, 0)
err := png.Encode(w, dest)
if err != nil {
return &appError{err, fmt.Sprintf("Can't encode: %s", err), 500}
}
return nil
}