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我在opencv flann :: Index中遇到一些问题 -

我正在创建索引

    Mat samples = Mat::zeros(vfv_net_quie.size(),24,CV_32F);
        for (int i =0; i < vfv_net_quie.size();i++)
        {
           for (int j = 0;j<24;j++)
           {
              samples.at<float>(i,j)=(float)vfv_net_quie[i].vfv[j];
           }
        }
    cv::flann::Index flann_index(
            samples,
            cv::flann::KDTreeIndexParams(4),
            cvflann::FLANN_DIST_EUCLIDEAN
               );
    flann_index.save("c:\\index.fln");

我试图加载它并找到最近的neiborhoods

cv::flann::Index flann_index(Mat(),
    cv::flann::SavedIndexParams("c:\\index.fln"),
    cvflann::FLANN_DIST_EUCLIDEAN
    );

cv::Mat resps(vfv_reg_quie.size(), K, CV_32F);
cv::Mat nresps(vfv_reg_quie.size(), K, CV_32S);
cv::Mat dists(vfv_reg_quie.size(), K, CV_32F);

flann_index.knnSearch(sample,nresps,dists,K,cv::flann::SearchParams(64));

并且在miniflann.cpp中有访问冲突

((IndexType*)index)->knnSearch(_query, _indices, _dists, knn,
                          (const ::cvflann::SearchParams&)get_params(params));

请帮忙