OpenCV&Qt的兩種放大縮小圖像的方法

Mat temImage;
        cv::resize(curImage, temImage, Size(curImage.cols*2, curImage.rows*2), INTER_LINEAR);
        curImage = temImage.clone();
        displayMat(curImage);

//        qreal width = curPix.width() * 2;  //
//        qreal height = curPix.height() * 2;
//        curPix = curPix.scaled(width, height,Qt::KeepAspectRatio);
//        ui->label->setPixmap(curPix);  //消耗CPU
//        ui->label->resize(ui->label->pixmap()->size());  //設置img大小，
//        ui->label->show();

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