我如何在QML中将OpenCv imshow用于DepthMap

Question

我没有显示我使用Opencv库获得的深度图。我尝试了cv :: imshow（“ Depth-Map”，disp8）;在Try-Catch中它正在运行。但是我的Qt代码不起作用。我想将openCv imshow添加到自己的项目中或“ Qml是否具有深度图查看器？”

void VideoProvider::depthMap(Mat img1,Mat img2)
{
     //two frames match between in there
    QThread::currentThread()->msleep(60);
    Mat im_left=img1;
    Mat im_right=img2;
    //for depth map start
    cv::Size imagesize = im_left.size();
    cv::Mat disparity_left=cv::Mat(imagesize.height,imagesize.width,CV_16S);
    cv::Mat disparity_right=cv::Mat(imagesize.height,imagesize.width,CV_16S);
    cv::Mat g1,g2,disp,disp8;
    cv::cvtColor(im_left,g1,cv::COLOR_BGR2GRAY);
    cv::cvtColor(im_right,g2,cv::COLOR_BGR2GRAY);
    cv::Ptr<cv::StereoBM> sbm = cv::StereoBM::create(0,21);
    sbm->setDisp12MaxDiff(1);
    sbm->setSpeckleRange(8);
    sbm->setSpeckleWindowSize(9);
    sbm->setUniquenessRatio(0);
    sbm->setTextureThreshold(507);
    sbm->setMinDisparity(-39);
    sbm->setPreFilterCap(61);
    sbm->setPreFilterSize(5);
    sbm->compute(g1,g2,disparity_left);
    normalize(disparity_left, disp8, 0, 255, CV_MINMAX, CV_8U);
    Mat mat(480, 640, CV_8UC4);
    vector<int> compression_params;
    compression_params.push_back(CV_IMWRITE_PNG_COMPRESSION);
    compression_params.push_back(9);
    //depth map finish, return "Mat disp8"
    try
    {
        //Problem is THIS!
        readyfor2 = false;
        cv::cvtColor(disp8, disp8, cv::COLOR_BGR2RGB); //Disp8(Depth-Map) is a Mat
        outputImage2 = QImage((uchar*)disp8.data, disp8.cols, disp8.rows, disp8.step, QImage::Format_RGB888);
        emit frameChanged2();
        //Problem END
    }
        catch (runtime_error& ex)
    {
        fprintf(stderr, "Exception converting image to PNG format: %s\n", ex.what());
    }

}

QML代码：dip8我用来显示qml代码。它是实时运行的

   Image {
        id: videoLayer2
        x: 32
        y: 22
        width: 230
        height: 186
        clip: false
        opacity: 1
        anchors.right: parent.right
        anchors.rightMargin: 371
        anchors.bottom: parent.bottom
        anchors.bottomMargin: 70
        fillMode: Image.PreserveAspectFit
                onSourceChanged:{
                    videoProvider2.framePainted2();
                }
    }
        Connections
        {
            target: videoProvider2
            property int frameCounter2: 0

            onFrameChanged2:
            {
                videoLayer2.source = "image://videoCapture2/hoge" +  frameCounter2;
                frameCounter2 ^= 1;
            }
        }