compute_constraint_distance_2param_6eq_2unk_f_unk  337 modules/calib3d/src/upnp.cpp   Mat D = compute_constraint_distance_2param_6eq_2unk_f_unk( Kmf1 );
compute_constraint_distance_2param_6eq_2unk_f_unk   98 modules/calib3d/src/upnp.h       cv::Mat compute_constraint_distance_2param_6eq_2unk_f_unk(const cv::Mat& M1);