最简单的Qt5.12配置opencv4.0方法，免Cmake版本

事先采用MinGW编译好的OpenCV4.0.1

https://github.com/huihut/OpenCV-MinGW-Build

在pro文件中加入头文件路径和库路径

INCLUDEPATH +=D:\OpenCV-MinGW-Build-OpenCV-4.1.1-x64\include

LIBS += D:\OpenCV-MinGW-Build-OpenCV-4.1.1-x64\x64\mingw\bin\libopencv_calib3d411.dll

LIBS += D:\OpenCV-MinGW-Build-OpenCV-4.1.1-x64\x64\mingw\bin\libopencv_core411.dll

LIBS += D:\OpenCV-MinGW-Build-OpenCV-4.1.1-x64\x64\mingw\bin\libopencv_dnn411.dll

LIBS += D:\OpenCV-MinGW-Build-OpenCV-4.1.1-x64\x64\mingw\bin\libopencv_features2d411.dll

LIBS += D:\OpenCV-MinGW-Build-OpenCV-4.1.1-x64\x64\mingw\bin\libopencv_flann411.dll

LIBS += D:\OpenCV-MinGW-Build-OpenCV-4.1.1-x64\x64\mingw\bin\libopencv_gapi411.dll

LIBS += D:\OpenCV-MinGW-Build-OpenCV-4.1.1-x64\x64\mingw\bin\libopencv_highgui411.dll

LIBS += D:\OpenCV-MinGW-Build-OpenCV-4.1.1-x64\x64\mingw\bin\libopencv_imgcodecs411.dll

LIBS += D:\OpenCV-MinGW-Build-OpenCV-4.1.1-x64\x64\mingw\bin\libopencv_imgproc411.dll

LIBS += D:\OpenCV-MinGW-Build-OpenCV-4.1.1-x64\x64\mingw\bin\libopencv_ml411.dll

LIBS += D:\OpenCV-MinGW-Build-OpenCV-4.1.1-x64\x64\mingw\bin\libopencv_objdetect411.dll

LIBS += D:\OpenCV-MinGW-Build-OpenCV-4.1.1-x64\x64\mingw\bin\libopencv_photo411.dll

LIBS += D:\OpenCV-MinGW-Build-OpenCV-4.1.1-x64\x64\mingw\bin\libopencv_stitching411.dll

LIBS += D:\OpenCV-MinGW-Build-OpenCV-4.1.1-x64\x64\mingw\bin\libopencv_video411.dll

LIBS += D:\OpenCV-MinGW-Build-OpenCV-4.1.1-x64\x64\mingw\bin\libopencv_videoio411.dll

加入opencv相关头文件（函数的引用）
#include <opencv2/core/core.hpp>
#include <opencv2/imgproc/imgproc.hpp>
#include <opencv2/highgui/highgui.hpp>
#include <opencv2/imgcodecs/imgcodecs.hpp>

显示一个图片代码如下
Mat src = cv::imread("F:/Qt_demo_byown/FFmpegDemo/1.jpg",1);   
Mat img;   
cvtColor(src, img, COLOR_BGR2RGB);    
ui->label->setPixmap(QPixmap::fromImage(QImage(img.data, img.cols, img.rows, img.step, QImage::Format_RGB888)));

记得发布程序的时候需要把 dll文件和exe文件拷贝到发布路径

大部分参考https://blog.csdn.net/qq_33474442/article/details/87074218

来源：CSDN

作者：m0_37056522

链接：https://blog.csdn.net/m0_37056522/article/details/103890556

标签

mingw

include

bin文件