Opencv Face Detection on Android

 

 

 

{
    String sf = "/sdcard/cv/lbpcascade_frontalface.xml";
    CascadeClassifier faceDetector = new CascadeClassifier(sf);
    String ef = "/sdcard/cv/haarcascade_eye.xml";
    CascadeClassifier eyeDetector = new CascadeClassifier(ef);

    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++) {

    }
    */

    Mat faceROI = null;

    for(Rect rect:faceDetections.toArray()){
        MatOfRect eyeDetections = new MatOfRect();
        faceROI = im.submat(rect);
        eyeDetector.detectMultiScale(faceROI, eyeDetections);
        Rect[] eyesArray = eyeDetections.toArray();
        for(Rect erect:eyeDetections.toArray()) {
            Imgproc.rectangle(faceROI, new Point(erect.x,  erect.y), new Point(erect.x + erect.width,erect.y + erect.width), new Scalar(0,0,255),2);
        }
        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);
    Imgcodecs.imwrite("/sdcard/cv/rectlenaeyes.png", faceROI);

}