重启活动没有错误

Question

我的Android应用程序中有2个Activity填充的菜单，当我进入第一个活动并进行皮肤检测等一些图像处理时，突然活动重启并在大约一分钟后返回菜单而没有任何错误（只需重启和回到主菜单）。任何机构都可以解释我的应用程序发生了什么？它会帮助我很多。感谢。

这种手部检测和皮肤检测的来源

 @Override
protected Bitmap processFrame(VideoCapture capture) {
    capture.retrieve(mRgba, Highgui.CV_CAP_ANDROID_COLOR_FRAME_RGBA);
    capture.retrieve(mGray, Highgui.CV_CAP_ANDROID_GREY_FRAME);

    if (mCascade != null) {
        int height = mGray.rows();
        int handSize = Math.round(height * Isign.minHandSize);
        List<Rect> hand = new LinkedList<Rect>();
        mCascade.detectMultiScale(mGray, hand, 1.1, 2, 2 // TODO: objdetect.CV_HAAR_SCALE_IMAGE
                , new Size(handSize, handSize));

        for (Rect r : hand){
            a++;
            Core.rectangle(mRgba, r.tl(), r.br(), new Scalar(0, 255, 0, 255), 3);

            if (a == 20){
                a       = 0;
                br      = r.br();
                tl      = r.tl();
                tgn     = r;
                flag    = true; 
            }   
        }  
    }

    if (flag == true){
        mCascade = null;
        Core.rectangle(mRgba, tl, br, new Scalar(0, 0, 255, 255), 3);
        //Create ROI image from mRgba
        roi_out         = mRgba.submat(tgn);

        Mat output = new Mat();
        output = drawLargestContour(roi_out);

        //Create Rect ROI Area
        Mat roi_kotak   = mRgba .colRange(tgn.x, tgn.x+tgn.width)
                                .rowRange(tgn.y, tgn.y+tgn.height);

        //Copy Processed image and put in init space
        output.copyTo(roi_kotak);