X-Git-Url: https://fleuret.org/cgi-bin/gitweb/gitweb.cgi?a=blobdiff_plain;f=mtp.cc;h=59e950a0da1ebd5d2564977de6f5fcb56c7de22d;hb=3070f21d61377aff06255fa5cfe92d0111d70117;hp=a3f4aa3872f3f30296ec906e2583a8d334956944;hpb=897732507b36b4fc2099f7c54536d278a93d4531;p=mtp.git

diff --git a/mtp.cc b/mtp.cc
index a3f4aa3..59e950a 100644
--- a/mtp.cc
+++ b/mtp.cc
@@ -23,6 +23,7 @@
 // EXAMPLE: ./mtp ./graph2.txt  | dot -T pdf -o- | xpdf -
 
 #include <iostream>
+#include <fstream>
 #include <stdlib.h>
 
 using namespace std;
@@ -31,10 +32,18 @@ using namespace std;
 
 //////////////////////////////////////////////////////////////////////
 
+scalar_t detection_score(int true_label) {
+  if((true_label > 0) == (drand48() < 0.9)) {
+    return   1.0 + 0.2 * (drand48() - 0.5);
+  } else {
+    return - 1.0 + 0.2 * (drand48() - 0.5);
+  }
+}
+
 int main(int argc, char **argv) {
-  int nb_locations = 20;
-  int nb_time_steps = 50;
-  int motion_amplitude = 2;
+  int nb_locations = 5;
+  int nb_time_steps = 20;
+  int motion_amplitude = 1;
 
   Tracker *tracker = new Tracker(nb_time_steps, nb_locations);
 
@@ -42,24 +51,31 @@ int main(int argc, char **argv) {
     for(int k = 0; k < nb_locations; k++) {
       tracker->set_allowed_motion(l, k, abs(l - k) <= motion_amplitude);
     }
+    tracker->set_as_exit(0, 1);
+    tracker->set_as_entrance(0, 1);
   }
 
+  tracker->build_graph();
+
   for(int r = 0; r < 10; r++) {
     cout << "* ROUND " << r << endl;
+
+    // We generate synthetic detection scores, all in the center
+    // location, with 10% false detection (FP or FN)
+
     for(int t = 0; t < nb_time_steps; t++) {
       for(int l = 0; l < nb_locations; l++) {
-        tracker->set_detection_score(t, l,
-                                    (drand48() < 0.95 ? -1.0 : 1.0) + drand48() * 0.1 - 0.05);
+        tracker->set_detection_score(t, l, detection_score(-1));
       }
-      tracker->set_detection_score(t, 0,
-                                  (drand48() < 0.95 ? 1.0 : -1.0) + drand48() * 0.1 - 0.05);
+      tracker->set_detection_score(t, nb_locations/2, detection_score(1));
     }
 
-    tracker->build_graph();
     tracker->track();
 
     for(int t = 0; t < tracker->nb_trajectories(); t++) {
-      cout << "TRAJECTORY " << t << " :";
+      cout << "TRAJECTORY "
+           << t
+           << " [starting " << tracker->trajectory_entrance_time(t) << "]";
       for(int u = 0; u < tracker->trajectory_duration(t); u++) {
         cout << " " << tracker->trajectory_location(t, u);
       }