void set_as_exit(int location, int v);
void build_graph();
- void print_dot_graph(ostream *os);
+ void print_graph_dot(ostream *os);
void set_detection_score(int time, int location, scalar_t score);
void track();
int nb_trajectories();
+ int trajectory_entrance_time(int k);
int trajectory_duration(int k);
int trajectory_location(int k, int time);
};