Data in Opencvcv::mat is written in TXT file

This article mainly introduces the data in Opencvcv::mat to write TXT file by row and column, the need for friends can refer to the following

In the process of using OPENCV for image processing, it is often involved in reading the data in the file into the Cv::mat, or writing the data in the Cv::mat to a TXT file.

Here is a list of the methods I used to write the data in Cv::mat to a TXT file, as shown in the code:

void Writemattofile (cv::mat& m, const char* filename) {  std::ofstream fout (filename);   if (!fout)  {   std::cout << "File not opened" << Std::endl;   return;  }   for (int i = 0; i<m.rows; i++)  {for   (int j = 0; j<m.cols; j + +)   {    fout << m.at<float> (i , j) << "\ T";   }   Fout << Std::endl;  }   Fout.close (); }