[CMakeList][转载]利用CmakeList构建opencv程序

打开VS2019创建CMake项目

CmakeList.txt

# requirement of cmake version

cmake_minimum_required(VERSION 3.10)

set(Project_Name OpencvTest)

set(SRC_LIST OpencvTest.cpp)

set(OpenCV_LIB "D:\\lufiles\\opencv310\\build\\x64\\vc14\\lib")

set(Opencv_Include "D:\\lufiles\\opencv310\\build\\include")

# set(OpenCV_LIB "D:\\lufiles\\opencv310\\build\\")  # 这两个目录中都包含 OpenCVConfig.cmake 文件，两种设置都可以构建项目

PROJECT(${Project_Name})

include_directories(${Opencv_Include})

link_directories(${OpenCV_LIB})

add_executable(${Project_Name} ${SRC_LIST})

target_link_libraries(${Project_Name} opencv_world310d.lib)

OpencvTest.cpp

#include <opencv2/core.hpp>

#include <opencv2/videoio.hpp>

#include <opencv2/highgui.hpp>

#include <iostream>

#include <stdio.h>

using namespace cv

using namespace std

int main(int, char**)

{

    Mat frame

    //--- INITIALIZE VIDEOCAPTURE

    VideoCapture cap

    // open the default camera using default API

    // cap.open(0)

    // OR advance usage: select any API backend

    int deviceID = 0             // 0 = open default camera

    int apiID = cv::CAP_ANY      // 0 = autodetect default API

    // open selected camera using selected API

    cap.open(deviceID + apiID)

    // check if we succeeded

    if (!cap.isOpened()) {

        cerr <<"ERROR! Unable to open camera\n"

        return -1

    }

    //--- GRAB AND WRITE LOOP

    cout <<"Start grabbing" <<endl

        <<"Press any key to terminate" <<endl

    for ()

    {

        // wait for a new frame from camera and store it into 'frame'

        cap.read(frame)

        // check if we succeeded

        if (frame.empty()) {

            cerr <<"ERROR! blank frame grabbed\n"

            break

        }

        // show live and wait for a key with timeout long enough to show images

        imshow("Live", frame)

        if (waitKey(5) >= 0)

            break

    }

    // the camera will be deinitialized automatically in VideoCapture destructor

    return 0

}

首先：下载opencv，并且按照网上说的进行配置。

然后，打开VS，新建工程，写上代码，这里给你一个简单的示例：

#include "cv.h"

#include "highgui.h"

int main( int argc, char** argv )

{

IplImage* pImg//声明IplImage指针

//载入图像

if( argc == 2 &&

(pImg = cvLoadImage( argv[1], 1)) != 0 )

{

cvNamedWindow( "Image", 1 )//创建窗口

cvShowImage( "Image", pImg )//显示图像

cvWaitKey(0)//等待按键

cvDestroyWindow( "Image" )//销毁窗口

cvReleaseImage( &pImg )//释放图像

return 0

}

return -1

}

---