问从OpenCV detectAndDecode获取QR顶点？

EN

@Override
    public Mat onCameraFrame(CameraBridgeViewBase.CvCameraViewFrame inputFrame) {
        mat1 = inputFrame.gray();
        Mat clrCrr = new Mat();
        Imgproc.cvtColor(mat1, clrCrr, Imgproc.COLOR_GRAY2BGR);



        QRCodeDetector decoder = new QRCodeDetector();
        Mat QR = new Mat(); //Mat for QR code
        Mat points = new Mat(); // points of QR Mat
        Mat dst = new Mat();    //Output frame

            runOnUiThread(new Runnable() {

                public void run() {

                    Handler h = new Handler();
                    String data = decoder.detectAndDecode(clrCrr, points,QR); //Decode QR
                    EditText editText =  findViewById(R.id.editText);
                    points.convertTo(points,CvType.CV_64FC3);

                    editText.setText("Point 1 " +points.get(0,0) );

                        Log.d("Test", String.valueOf(points.get(0,1)));


                    h.postDelayed(this,3000);
                }
            });



        Imgproc.threshold(mat1, dst, 100, 200, Imgproc.THRESH_BINARY); // Threshold and return dst

        return dst
    }