QT OPENCV读取图片一直读取不成功

r囧r小猫 2023-01-22 10:56 42阅读 0赞

## QT OPENCV读取图片一直读取不成功 ##

我用c语言版本的qt和opencv读取图片，视频可以正常读取，但是图片就是不行，图片路径也是对的，后面发现，我用的debug模式，但是链接库的时候，把debug和release中的库都链接进来了。  
下面是我的源码，通过按键打开图像

void MainWindow::on_pushButton_open_picture_clicked()
    { 
        printf("96 on_pushButton_open_clicked\n");
        printf("97 on_pushButton_open_clicked\n");
        printf("98 on_pushButton_open_clicked\n");
        printf("99 on_pushButton_open_clicked\n");
        cout<<"1111"<<endl;
        QString filename = QFileDialog::getOpenFileName(this,
                               tr("Open Image"),".",tr("Image File (*.jpg *.png *.bmp)"));
            QTextCodec *code = QTextCodec::codecForName("gb18030");
           // std::string name = code->fromUnicode(filename).data();//filename.toAscii().data()
            std::string name = code->fromUnicode(filename).data();
            cout<<"2222222"<<endl;
           printf("%s\n",name.c_str());
            //Mat image_src = cv::imread(name);
            //string name="E:/Qt_project/21_0515_Qt_test3/21_0515_Qt_test3/traffic_light_0002.jpg";
           // name="E://Qt_project//21_0515_Qt_test3//21_0515_Qt_test3//traffic_light_0002.jpg";
           // Mat frame1 = imread("E:/Qt_project/21_0515_Qt_test3/21_0515_Qt_test3/traffic_light_0002.jpg");
    
            frame = imread(name);
            cout<<"3"<<endl;
            if(frame.empty())
            { 
                QMessageBox msgBox;
                msgBox.setText(tr("Image Data Is Null"));
                msgBox.exec();
            }
            else
            { 
                Mat image_copy = frame.clone();   //clone函数创建新的图片
                image = Mat2QImage(image_copy);
                Label_1->setPixmap(QPixmap::fromImage(image));
            }
          // close();
    }

# 解决办法 #

LIBS+=D:/Opencv420/opencv420_build/install/x64/vc14/lib/opencv_*.lib

改为

LIBS+=D:/Opencv420/opencv420_build/install/x64/vc14/lib/opencv_*d.lib