#include "opencv2/core.hpp"

#include <iostream>

void testConversion(const cv::Matx22d& a)

{

        std::cout << a << std::endl;

}

int main(int argc)

{

        cv::Mat_<double> a = (cv::Mat_<double>(2,2) << 10, 11, 12, 13);

        cv::Matx22d b(a);

        std::cout << a << std::endl;

        std::cout << b << std::endl;

        testConversion(a);

        return 1;

}