surf特征点keypoint转化成mat类型或存储起来的办法

surf特征点keypoint转化成mat类型或存储起来的办法

std::vector<cv::KeyPoint> keypoints;
std::vector<cv::Point2f> points;
std::vector<cv::KeyPoint>::iterator it;

for( it= keypoints.begin(); it!= keypoints.end();it++)
{
    points.push_back(it->pt);
}

cv::Mat pointmatrix(points);

Write to filestorage is

cv::FileStorage fs("test.yml", cv::FileStorage::WRITE);
cv::FileStorage fs2("test2.xml", cv::FileStorage::WRITE);

detector.write(fs);
detector.write(fs2);

surf特征点keypoint转化成mat类型或存储起来的办法

原文：http://blog.csdn.net/junshen1314/article/details/44960831