QT内label控件通过opencv显示图像

1.对pro进行配置。使其可以理解opencv。

INCLUDEPATH+=d:\opencv249\include\opencv\
                    d:\opencv249\include\opencv2\
                    d:\opencv249\include

LIBS+=d:\opencv249\lib\libopencv_calib3d249.dll.a\
        d:\opencv249\lib\libopencv_contrib249.dll.a\
        d:\opencv249\lib\libopencv_core249.dll.a\
        d:\opencv249\lib\libopencv_features2d249.dll.a\
        d:\opencv249\lib\libopencv_flann249.dll.a\
        d:\opencv249\lib\libopencv_gpu249.dll.a\
        d:\opencv249\lib\libopencv_highgui249.dll.a\
        d:\opencv249\lib\libopencv_imgproc249.dll.a\
        d:\opencv249\lib\libopencv_legacy249.dll.a\
        d:\opencv249\lib\libopencv_ml249.dll.a\
        d:\opencv249\lib\libopencv_objdetect249.dll.a\
        d:\opencv249\lib\libopencv_video249.dll.a

2.在*.ui内创建两个命令button。一个标签。其界面为：

3.配置其.h文件、.cpp文件。

.h文件：

#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QMainWindow>
#include <opencv2/core/core.hpp>
#include <opencv2/highgui/highgui.hpp>
namespace Ui {
class MainWindow;
}

class MainWindow : public QMainWindow
{
    Q_OBJECT

public:
    explicit MainWindow(QWidget *parent = 0);
    ~MainWindow();
    cv::Mat image;
      QImage img;

private slots:
    void on_pushButton_clicked();

    void on_pushButton_2_clicked();

private:
    Ui::MainWindow *ui;
};

#endif // MAINWINDOW_H

.cpp文件

补充：

image.cols*image.channels()
可以改为image.step.
參考资料：

1.使用Qt显示openCV矩阵图片    http://blog.csdn.net/homechao/article/details/8989641
2. Qt中用QLabel显示OpenCV中Mat图像数据出现扭曲现象的解决    http://lovelittlebean.blog.163.com/blog/static/11658218620125208212189/