#include <opencv2/opencv.hpp>

using namespace std;

using namespace cv;

​

int main(){

    cv::Mat a = cv::Mat::zeros(2,2,CV_8UC1);

    cv::Mat b,c;

​

    b = a;       // shallow copy, share the same matrix data pointer

    a.copyTo(c); // deep copy, allocate matrix data memory, and assign the new pointer

​

    std::cout << "----- a -----\n" << a << "\n----- b -----\n" << b << "\n----- c -----\n" << c << std::endl;

​

​

    std::cout << "\nModify a, b, c:\n";

    a.at<unsigned char>(0,0) = 1; // a, b share the same matrix data

    b.at<unsigned char>(1,0) = 2;

    c.at<unsigned char>(1,1) = 3; // c has independent matrix data

​

    std::cout << "----- a -----\n" << a << "\n----- b -----\n" << b << "\n----- c -----\n" << c << std::endl;

​

​

    return 0;

​

}