OpenCV save cv::Mat in double/float precision

In order to read the OpenCV matrix in double/float precision in MATLAB, we can save the matrix using:

std::ofstream myfile;
myfile.open("output.csv");
myfile << format(outMat,"csv") << std::endl << std::endl;
myfile.close();

Above code save the matrix into a csv (comma-separated values) file which can be imported by MATLAB easily using 'load' function.

Reference:
Saving matrix in double precision from OpenCV (C++) for Matlab