QT+opencv显示图片

借鉴该文章 https://blog.csdn.net/m0_60259116/article/details/128104565

 

opencv的Mingw版本放在E盘

所以在工程文件中添加如下地址：

INCLUDEPATH +=E:\opencv3.4.0\OpenCV-MinGW-Build-OpenCV-3.4.5\include\

              E:\opencv3.4.0\OpenCV-MinGW-Build-OpenCV-3.4.5\include\

              E:\opencv3.4.0\OpenCV-MinGW-Build-OpenCV-3.4.5\include\opencv2

LIBS +=E:\opencv3.4.0\OpenCV-MinGW-Build-OpenCV-3.4.5\x86\mingw\bin\libopencv_*.dll

在main.cpp中写如下程序：

#include "mainwindow.h"

#include <QApplication>

#include "opencv2/opencv.hpp"

#include <iostream>

using namespace cv;

using namespace std;

int main(int argc, char *argv[])

{

    QApplication a(argc, argv);

    string image="E:/3.jpg";

    Mat colorr;

    colorr=imread(image);

    imshow("color",colorr);

    //MainWindow w;

    //w.show();

    return a.exec();

}

完成