Opencv Java Example

 

{
    String sf = "/sdcard/cv/lbpcascade_frontalface.xml";
    CascadeClassifier faceDetector = new CascadeClassifier(sf);
    String mf = "/sdcard/cv/lena.png";
    Mat  im = Imgcodecs.imread(mf);
    MatOfRect faceDetections = new MatOfRect();
    faceDetector.detectMultiScale(im, faceDetections);

    /*
    Rect[] facesArray = faceDetections.toArray();
    for(int i = 0; i < facesArray.length; i++) {

    }
    */

    for(Rect rect:faceDetections.toArray()){
        Imgproc.rectangle(im, new Point(rect.x,rect.y), new Point(rect.x+rect.width,rect.y+rect.width), new Scalar(0,0,255),2);
    }

    Imgcodecs.imwrite("/sdcard/cv/rectlena.png", im);

}