opencv c++ feature detection
#include <opencv2/opencv.hpp> #include <opencv2/features2d.hpp> // initialize detector cv::Ptr<cv::FeatureDetector> detector = cv::ORB::create(); // detect features and descriptor std::vector<cv::KeyPoint> keypoints1; cv::Mat descriptors1; detector->detectAndCompute( test_im_gray, cv::Mat(), keypoints1, descriptors1 );