opencv mat 转yaml文件时的数据的保存顺序测试笔记

Mat中的数据按行保存到yaml中。

#include "opencv2/opencv.hpp"
#include <time.h>

using namespace cv;

int main(int argc, char** argv)
{
  FileStorage fs("test.yml", FileStorage::WRITE);

  fs << "frameCount" << 5;
  fs<<"file_name"<<"filename";
  time_t rawtime; time(&rawtime);
  fs << "calibrationDate" << asctime(localtime(&rawtime));
  Mat cameraMatrix = (Mat_<double>(3,3) << 1000, 0, 320, 0, 1000, 240, 0, 0, 1);
  Mat distCoeffs = (Mat_<double>(5,1) << 0.1, 0.01, -0.001, 0, 0);
  fs << "cameraMatrix" << cameraMatrix << "distCoeffs" << distCoeffs;
  fs << "features" << "[";
  for( int i = 0; i < 3; i++ )
    {
      int x = rand() % 640;
      int y = rand() % 480;
      uchar lbp = rand() % 256;

      fs << "{:" << "x" << x << "y" << y << "lbp" << "[:";
      for( int j = 0; j < 8; j++ )
        fs << ((lbp >> j) & 1);
      fs << "]" << "}";
    }
  fs << "]";

  Mat test_sequence;
  test_sequence.create(Size(2, 3), CV_8UC1);
  test_sequence.setTo(0.0);
  for(int i=0;i<test_sequence.rows;i++){
      for(int j=0;j<test_sequence.cols;j++){
          test_sequence.at<uchar>(i,j)=i*j;
        }
    }
  fs<<"test_sequence"<<test_sequence;


  Mat test_seq_row;
  test_seq_row.create(Size(4,3), CV_8UC1);
  test_seq_row.setTo(0.0);
  for(int i=0;i<test_seq_row.rows;i++){
      for(int j=0;j<test_seq_row.cols;j++){
          test_seq_row.at<uchar>(i,j)=i*j;
        }
    }
  fs<<"test_sequence"<<test_seq_row;


  fs.release();
  return 0;
}