public static void main(String[] args) throws IOException {
	// TODO Auto-generated method stub
	System.loadLibrary(Core.NATIVE_LIBRARY_NAME);

	Mat image = imread("images/qrcode-feature.jpg");
	QRCodeDetector detector = new QRCodeDetector();
	Mat points = new Mat();
	Mat straight_qrcode = new Mat();
	String data = detector.detectAndDecode(image, points, straight_qrcode);

	if (data.length() > 0) {
		System.out.println("Decoded Data :" + data);

		display(image, points);

		// HighGui.imshow("points", points);
		straight_qrcode.convertTo(straight_qrcode, CvType.CV_8UC3);
		
		HighGui.imshow("Rectified QRCode", straight_qrcode);

		HighGui.waitKey(0);
	}

	System.exit(0);
}

public static void display(Mat image, Mat points) {
	int n = points.rows();
	for (int i = 0; i < n; i++) {
		Imgproc.line(image, new Point(points.get(i, 0)), new Point(points.get((i + 1) % n, 0)),
				new Scalar(255, 0, 0), 3);
	}
	HighGui.imshow("Result", image);
}