opencv Android图片处理并显示在原图上

[yhjhaha]

得到第二张图片的效果后，怎么让这两个框显示在原来的图片上，在安卓上怎么写呢，谢谢dalao


画框的代码在这里

Mat drawing = Mat.zeros(src.size(), CvType.CV_8UC3);
        List<MatOfPoint> contoursPolyList = new ArrayList<>(contoursPoly.length);
        for (MatOfPoint2f poly : contoursPoly) {
            contoursPolyList.add(new MatOfPoint(poly.toArray()));
        }
            for (int i = 0; i < contours.size(); i++) {
                Scalar color = new Scalar(rng.nextInt(256), rng.nextInt(256), rng.nextInt(256));
             Imgproc.drawContours(drawing, contoursPolyList, i, color);


                Imgproc.rectangle(drawing,boundRect[i].tl(), boundRect[i].br(), color, 2);

            }