1. 若未安装cmake，使用命令brew install cmake安装。

若未安装pkg-config，使用命令brew install pkg-config安装。若安装后未能找到pkg-config程序，则将其复制到/usr/local/bin目录下。

 

2. 安装opencv

brew install opencv

 

3. 测试程序

#include 
     
      #include 
      
       #include 
       
        #include 
        
         using namespace std;using namespace cv;int main(){    cv::Mat img_encode;    img_encode = imread("./obito.jpeg", CV_LOAD_IMAGE_COLOR);    vector
         
           data_encode;    imencode(".jpeg", img_encode, data_encode);    string str_encode(data_encode.begin(), data_encode.end());    //cout << str_encode << endl;    cv::Mat img_decode;    vector
          
            data(str_encode.begin(), str_encode.end()); img_decode = imdecode(data, CV_LOAD_IMAGE_COLOR); imshow("pic", img_decode); cvWaitKey(10000); //cout << "Hello" << endl;}
          
         
        
       
      
     

编译命令为：g++ Cpp_Opencv.cpp -o Cpp_Opencv `pkg-config --cflags --libs opencv`

或者直接将链接库列出来：g++ Cpp_Opencv.cpp  -L/usr/local/lib/ -lopencv_highgui.3.4.2 -lopencv_core.3.4.2 -lopencv_imgcodecs