int max_id = 0;
PatchPtr createPatch(const cv::Mat& image, const Detection& d);
double distance(TrackerPtr t, const cv::Mat& image, const Detection& d);
int max_id = 0;
PatchPtr createPatch(const cv::Mat& image, const Detection& d);
double distance(TrackerPtr t, const cv::Mat& image, const Detection& d);