2 ///////////////////////////////////////////////////////////////////////////
3 // This program is free software: you can redistribute it and/or modify //
4 // it under the terms of the version 3 of the GNU General Public License //
5 // as published by the Free Software Foundation. //
7 // This program is distributed in the hope that it will be useful, but //
8 // WITHOUT ANY WARRANTY; without even the implied warranty of //
9 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU //
10 // General Public License for more details. //
12 // You should have received a copy of the GNU General Public License //
13 // along with this program. If not, see <http://www.gnu.org/licenses/>. //
15 // Written by and Copyright (C) Francois Fleuret //
16 // Contact <francois.fleuret@idiap.ch> for comments & bug reports //
17 ///////////////////////////////////////////////////////////////////////////
29 //////////////////////////////////////////////////////////////////////
31 scalar_t detection_score(int true_label, scalar_t flip_noise) {
32 if((true_label > 0) == (drand48() < flip_noise)) {
33 return 1.0 + 0.2 * (drand48() - 0.5);
35 return - 1.0 + 0.2 * (drand48() - 0.5);
39 int main(int argc, char **argv) {
40 int nb_locations = 1000;
41 int nb_time_steps = 1000;
42 int motion_amplitude = 1;
44 Tracker *tracker = new Tracker(nb_time_steps, nb_locations);
46 for(int l = 0; l < nb_locations; l++) {
47 for(int k = 0; k < nb_locations; k++) {
48 tracker->set_allowed_motion(l, k, abs(l - k) <= motion_amplitude);
50 tracker->set_as_entrance(0, 1);
51 tracker->set_as_exit(nb_locations - 1, 1);
54 tracker->build_graph();
56 // We generate synthetic detection scores at location
57 // nb_locations/2, with 5% false detection (FP or FN)
59 for(int t = 0; t < nb_time_steps; t++) {
60 for(int l = 0; l < nb_locations; l++) {
61 tracker->set_detection_score(t, l, detection_score(-1, 0.95));
63 tracker->set_detection_score(t, nb_locations/2, detection_score(1, 0.95));
68 for(int t = 0; t < tracker->nb_trajectories(); t++) {
71 << " [starting " << tracker->trajectory_entrance_time(t) << "]";
72 for(int u = 0; u < tracker->trajectory_duration(t); u++) {
73 cout << " " << tracker->trajectory_location(t, u);