// DrawRectangles uses Rect array values to return image with rectangles drawn.
func DrawRectangles(image *cv.IplImage, rect []*cv.Rect, r int, g int, b int, thickness int) *cv.IplImage {
for _, value := range rect {
cv.Rectangle(image,
cv.Point{value.X() + value.Width(), value.Y()},
cv.Point{value.X(), value.Y() + value.Height()},
cv.NewScalar(float64(b), float64(g), float64(r), 0), thickness, 1, 0)
}
return image
}
func PaintFace(img []byte, face face) []byte {
image := opencv.DecodeImageMem(img)
opencv.Rectangle(image,
opencv.Point{face.coord.x + face.coord.width, face.coord.y},
opencv.Point{face.coord.x, face.coord.y + face.coord.height},
opencv.ScalarAll(0), 1, 1, 0)
le := face.eye_left.Center()
re := face.eye_right.Center()
opencv.Circle(image,
opencv.Point{le.x, le.y},
2,
opencv.ScalarAll(255), 1, 1, 0)
opencv.Circle(image,
opencv.Point{re.x, re.y},
2,
opencv.ScalarAll(255), 1, 1, 0)
faceCenter := face.Center()
opencv.Circle(image,
opencv.Point{faceCenter.x, faceCenter.y},
2,
opencv.ScalarAll(50), 1, 1, 0)
opencv.Rectangle(image,
opencv.Point{face.mouth.x + face.mouth.width, face.mouth.y},
opencv.Point{face.mouth.x, face.mouth.y + face.mouth.height},
opencv.ScalarAll(2), 1, 1, 0)
buf := new(bytes.Buffer)
err := jpeg.Encode(buf, image.ToImage(), nil)
if err != nil {
panic(err)
}
return buf.Bytes()
}
func main() {
_, currentfile, _, _ := runtime.Caller(0)
image := opencv.LoadImage(path.Join(path.Dir(currentfile), "../images/lena.jpg"))
cascade := opencv.LoadHaarClassifierCascade(path.Join(path.Dir(currentfile), "haarcascade_frontalface_alt.xml"))
faces := cascade.DetectObjects(image)
for _, value := range faces {
opencv.Rectangle(image,
opencv.Point{value.X() + value.Width(), value.Y()},
opencv.Point{value.X(), value.Y() + value.Height()},
opencv.ScalarAll(255.0), 1, 1, 0)
}
win := opencv.NewWindow("Face Detection")
win.ShowImage(image)
opencv.WaitKey(0)
}
func PaintFaces(img []byte, faces faces) []byte {
image := opencv.DecodeImageMem(img)
for _, face := range faces {
opencv.Rectangle(image,
opencv.Point{face.coord.x + face.coord.width, face.coord.y},
opencv.Point{face.coord.x, face.coord.y + face.coord.height},
opencv.ScalarAll(0), 1, 1, 0)
le := face.LeftEye().Center()
re := face.RightEye().Center()
opencv.Circle(image,
opencv.Point{le.X(), le.Y()},
2,
opencv.ScalarAll(255), 1, 1, 0)
opencv.Circle(image,
opencv.Point{re.x, re.y},
2,
opencv.ScalarAll(255), 1, 1, 0)
faceCenter := face.Center()
opencv.Circle(image,
opencv.Point{faceCenter.x, faceCenter.y},
2,
opencv.ScalarAll(50), 1, 1, 0)
// opencv.Rectangle(image,
// opencv.Point{face.mouth.x + face.mouth.width, face.mouth.y},
// opencv.Point{face.mouth.x, face.mouth.y + face.mouth.height},
// opencv.ScalarAll(2), 1, 1, 0)
}
buf := new(bytes.Buffer)
err := jpeg.Encode(buf, image.ToImage(), nil)
if err != nil {
panic(err)
}
return buf.Bytes()
}