Opencv 에서.xml 와.yml 읽 기 및 쓰기

        OpenCV C++   ，imwrite() imread()        ，        。           XML/YML   ，   C    cvSave()     C++      ，     FileStorage 。        ，            ，                       。

1. FileStorage  XML/YML  

     •       FileStorage  ， FileStorage::WRITE         。

     •      <<           。

     •        ，       。

        ：

    FileStorage fs("test.yml", FileStorage::WRITE);
    fs << "frameCount" << 5;
    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     
    Mat distCoeffs = (Mat_<double>(5,1) << 0.1, 0.01, -0.001, 0, 0);
    fs << "cameraMatrix" << cameraMatrix << "distCoeffs" << distCoeffs;

    //features      3   ,          x,y    8 uchar    
    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 << "]";
    fs.release(); 

 •     FileStorage  ， FileStorage::READ              

 •     FileStorage::operator []()         ，    FileNode FileNodeIterator

 •     FileStorage::release()       

     ：