c++ - 使用opencv通过Filestorage保存时出错

我正在尝试从BOW算法中保存词汇表。下面是我的代码。

FileStorage fs;
fs.open("Vocabulary.xml", FileStorage::WRITE);
Mat vocabulary = bow.cluster();
fs << vocabulary ;
fs.release();
FileStorage fs2;
fs2.open("Vocabulary.xml", FileStorage::READ);
fs2 ["Vocabulary"] >> vocabulary ;
dextract.setVocabulary(vocabulary);

cv::Mat training_mat(num_img , dictionarySize,CV_32FC1);
cv::Mat labels(num_img,1,CV_32FC1);

CvSVM svm;
svm.load( "trainsvm.xml" );

这是我的错误:

OpenCV Error: Unspecified error (No element name has been given) in unknown function , file c:\opencv\2.4.4\build\include\opencv2\core\operations.hpp , line 2908

最佳答案

您没有在文件中设置词汇表名称，请尝试以下操作:

fs << "Vocabulary" << vocabulary ;