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QString fileName = QFileDialog::getOpenFileName(this,
                                                tr("Open Image"),".",
                                                tr("Image Files(*.png *.jpg *.jpeg *.bmp)"));
image = cv::imread(fileName.toUtf8().data());
if(!image.data){
    qDebug()<< "Could not open or find the image";
    return ;
}
QString status = QString::number(image.rows) + "x" + QString::number(image.cols);
ui->label_2->setText(status);
//show 
cv::namedWindow("Original Image");
cv::imshow("Original Image",image);

```

I can't understand this situration,Where is the problem?