c++ opencv3.4 保存和读取PCA模型

  cv::PCA pca(samples, cv::Mat(), cv::PCA::DATA_AS_ROW,);

  FileStorage fs("pca.xml",FileStorage::WRITE);

  pca.write(fs);

  fs.release();

   FileStorage fs("pca.xml",FileStorage::READ);

   cv::PCA pca;

   pca.read(fs.root());

   fs.release();