X-Git-Url: https://fleuret.org/cgi-bin/gitweb/gitweb.cgi?p=mtp.git;a=blobdiff_plain;f=mtp_example.cc;h=14132c145ddd1e57f4bd921e3a71ff43b43065db;hp=91e4d6b24b4f607290375ad96f637e4d9a9b1cbb;hb=HEAD;hpb=ecf9426e0c2db90a095efd32aade09b135e9ec20

diff --git a/mtp_example.cc b/mtp_example.cc
index 91e4d6b..14132c1 100644
--- a/mtp_example.cc
+++ b/mtp_example.cc
@@ -24,6 +24,8 @@
 
 #include <iostream>
 #include <fstream>
+#include <stdlib.h>
+#include <string.h>
 
 using namespace std;
 
@@ -34,35 +36,44 @@ using namespace std;
 scalar_t noisy_score(scalar_t true_score, scalar_t erroneous_score,
                      scalar_t score_noise, scalar_t flip_noise) {
   if(drand48() < flip_noise) {
-    return erroneous_score + score_noise * (2.0 * drand48() - 1.0);
+    return erroneous_score + score_noise * (2.0f * scalar_t(drand48()) - 1.0f);
   } else {
-    return true_score + score_noise * (2.0 * drand48() - 1.0);
+    return true_score + score_noise * (2.0f * scalar_t(drand48()) - 1.0f);
   }
 }
 
-int main(int argc, char **argv) {
+void create_light_test(MTPTracker *tracker) {
   int nb_locations = 7;
   int nb_time_steps = 8;
   int motion_amplitude = 1;
 
-  MTPTracker *tracker = new MTPTracker();
-
   tracker->allocate(nb_time_steps, nb_locations);
 
-  // We define the spatial structures by stating what are the possible
-  // motions of targets, and what are the entrances and the
-  // exits.
+  // We define the spatial structure by stating what are the possible
+  // motions of targets, and what are the entrances and the exits.
 
   // Here our example is a 1D space with motions from any location to
   // any location less than motion_amplitude away, entrance at
-  // location 0 and exit at location nb_locations-1.
+  // location 0 (or in the first time frame, i.e. targets can already
+  // be in the scene when the sequence starts) and exit at location
+  // nb_locations-1 (or from the last time frame, i.e. targets can
+  // still be present when the sequence finishes)
 
   for(int l = 0; l < nb_locations; l++) {
-    for(int k = 0; k < nb_locations; k++) {
-      tracker->allowed_motion[l][k] = abs(l - k) <= motion_amplitude;
+    for(int m = 0; m < nb_locations; m++) {
+      tracker->allowed_motions[l][m] = abs(l - m) <= motion_amplitude;
+    }
+  }
+
+  for(int t = 0; t < nb_time_steps; t++) {
+    for(int l = 0; l < nb_locations; l++) {
+      // We allow targets to enter in the first time frame, or in
+      // location 0
+      tracker->entrances[t][l] = (t == 0 || l == 0);
+      // We allow targets to leave from the last time frame, or from
+      // location nb_locations-1
+      tracker->exits[t][l] = (t == nb_time_steps - 1 || l == nb_locations-1);
     }
-    tracker->entrances[0] = 1;
-    tracker->exits[nb_locations - 1] = 1;
   }
 
   // We construct the graph corresponding to this structure
@@ -72,8 +83,8 @@ int main(int argc, char **argv) {
   // Then, we specify for every location and time step what is the
   // detection score there.
 
-  scalar_t flip_noise = 0.05;
-  scalar_t score_noise = 0.0;
+  scalar_t flip_noise = 0.05f;
+  scalar_t score_noise = 0.0f;
 
   // We first put a background noise, with negative scores at every
   // location.
@@ -115,14 +126,64 @@ int main(int argc, char **argv) {
     tracker->detection_scores[t][la] = sa;
     tracker->detection_scores[t][lb] = sb;
   }
+}
+
+void create_heavy_test(MTPTracker *tracker) {
+  int nb_locations = 100;
+  int nb_time_steps = 1000;
+
+  tracker->allocate(nb_time_steps, nb_locations);
+
+  for(int l = 0; l < nb_locations; l++) {
+    for(int m = 0; m < nb_locations; m++) {
+      tracker->allowed_motions[l][m] = (drand48() < 0.1);
+    }
+  }
+
+  for(int t = 0; t < nb_time_steps; t++) {
+    for(int l = 0; l < nb_locations; l++) {
+      tracker->entrances[t][l] = drand48() < 0.01;
+      tracker->exits[t][l] = drand48() < 0.01;
+    }
+  }
+
+  tracker->build_graph();
+
+  for(int t = 0; t < nb_time_steps; t++) {
+    for(int l = 0; l < nb_locations; l++) {
+      tracker->detection_scores[t][l] = scalar_t(drand48()) - 0.95f;
+    }
+  }
+}
+
+int main(int argc, char **argv) {
+  int stress_test;
+
+  if(argc == 1) {
+    stress_test = 0;
+  } else if(argc == 2 && strcmp(argv[1], "stress") == 0) {
+    stress_test = 1;
+  } else {
+    cerr << "mtp_examples [stress]" << endl;
+    exit(EXIT_FAILURE);
+  }
+
+  MTPTracker *tracker = new MTPTracker();
+
+  if(stress_test) {
+    create_heavy_test(tracker);
+  } else {
+    create_light_test(tracker);
+  }
 
-  { // Write down the tracker setting, so that we can use it as an
+  {
+    // Write down the tracker setting, so that we can use it as an
     // example for the mtp command line
     ofstream out_tracker("tracker.dat");
     tracker->write(&out_tracker);
   }
 
-  // Does the tracking per se
+  // Performs the tracking per se
 
   tracker->track();
 
@@ -134,7 +195,7 @@ int main(int argc, char **argv) {
          << " starting at " << tracker->trajectory_entrance_time(t)
          << ", duration " << tracker->trajectory_duration(t)
          << ", score " << tracker->trajectory_score(t)
-         << ", through nodes ";
+         << ", through locations";
     for(int u = 0; u < tracker->trajectory_duration(t); u++) {
       cout << " " << tracker->trajectory_location(t, u);
     }