Added README.md

[mtp.git] / mtp_tracker.cc

diff --git a/mtp_tracker.cc b/mtp_tracker.cc
index 793b672..8cc4517 100644 (file)
--- a/mtp_tracker.cc
+++ b/mtp_tracker.cc
@@ -32,9 +32,9 @@ void MTPTracker::free() {
   delete[] _edge_lengths;
   delete _graph;
   deallocate_array<scalar_t>(detection_scores);
-  deallocate_array<int>(allowed_motion);
-  delete[] exits;
-  delete[] entrances;
+  deallocate_array<int>(allowed_motions);
+  deallocate_array<int>(exits);
+  deallocate_array<int>(entrances);
 }
 
 void MTPTracker::allocate(int t, int l) {
@@ -44,22 +44,22 @@ void MTPTracker::allocate(int t, int l) {
   nb_time_steps = t;
 
   detection_scores = allocate_array<scalar_t>(nb_time_steps, nb_locations);
-  allowed_motion = allocate_array<int>(nb_locations, nb_locations);
+  allowed_motions = allocate_array<int>(nb_locations, nb_locations);
 
-  entrances = new int[nb_locations];
-  exits = new int[nb_locations];
+  entrances = allocate_array<int>(nb_time_steps, nb_locations);
+  exits = allocate_array<int>(nb_time_steps, nb_locations);
 
   for(int l = 0; l < nb_locations; l++) {
-    entrances[l] = 0;
-    exits[l] = 0;
     for(int m = 0; m < nb_locations; m++) {
-      allowed_motion[l][m] = 0;
+      allowed_motions[l][m] = 0;
     }
   }
 
   for(int t = 0; t < nb_time_steps; t++) {
     for(int l = 0; l < nb_locations; l++) {
       detection_scores[t][l] = 0.0;
+      entrances[t][l] = 0;
+      exits[t][l] = 0;
     }
   }
 
@@ -68,29 +68,33 @@ void MTPTracker::allocate(int t, int l) {
 }
 
 void MTPTracker::write(ostream *os) {
-  (*os) << nb_locations << " " << nb_time_steps <<endl;
+  (*os) << nb_locations << " " << nb_time_steps << endl;
 
   (*os) << endl;
 
   for(int l = 0; l < nb_locations; l++) {
     for(int m = 0; m < nb_locations; m++) {
-      (*os) << allowed_motion[l][m];
+      (*os) << allowed_motions[l][m];
       if(m < nb_locations - 1) (*os) << " "; else (*os) << endl;
     }
   }
 
   (*os) << endl;
 
-  for(int l = 0; l < nb_locations; l++) {
-    (*os) << entrances[l];
-    if(l < nb_locations - 1) (*os) << " "; else (*os) << endl;
+  for(int t = 0; t < nb_time_steps; t++) {
+    for(int l = 0; l < nb_locations; l++) {
+      (*os) << entrances[t][l];
+      if(l < nb_locations - 1) (*os) << " "; else (*os) << endl;
+    }
   }
 
   (*os) << endl;
 
-  for(int l = 0; l < nb_locations; l++) {
-    (*os) << exits[l];
-    if(l < nb_locations - 1) (*os) << " "; else (*os) << endl;
+  for(int t = 0; t < nb_time_steps; t++) {
+    for(int l = 0; l < nb_locations; l++) {
+      (*os) << exits[t][l];
+      if(l < nb_locations - 1) (*os) << " "; else (*os) << endl;
+    }
   }
 
   (*os) << endl;
@@ -104,24 +108,28 @@ void MTPTracker::write(ostream *os) {
 }
 
 void MTPTracker::read(istream *is) {
-  int nb_locations, nb_time_steps;
+  int l = 0, t = 0;
 
-  (*is) >> nb_locations >> nb_time_steps;
+  (*is) >> l >> t;
 
-  allocate(nb_time_steps, nb_locations);
+  allocate(t, l);
 
   for(int l = 0; l < nb_locations; l++) {
     for(int m = 0; m < nb_locations; m++) {
-      (*is) >> allowed_motion[l][m];
+      (*is) >> allowed_motions[l][m];
     }
   }
 
-  for(int l = 0; l < nb_locations; l++) {
-    (*is) >> entrances[l];
+  for(int t = 0; t < nb_time_steps; t++) {
+    for(int l = 0; l < nb_locations; l++) {
+      (*is) >> entrances[t][l];
+    }
   }
 
-  for(int l = 0; l < nb_locations; l++) {
-    (*is) >> exits[l];
+  for(int t = 0; t < nb_time_steps; t++) {
+    for(int l = 0; l < nb_locations; l++) {
+      (*is) >> exits[t][l];
+    }
   }
 
   for(int t = 0; t < nb_time_steps; t++) {
@@ -150,7 +158,7 @@ MTPTracker::MTPTracker() {
   nb_time_steps = 0;
 
   detection_scores = 0;
-  allowed_motion = 0;
+  allowed_motions = 0;
 
   entrances = 0;
   exits = 0;
@@ -160,12 +168,7 @@ MTPTracker::MTPTracker() {
 }
 
 MTPTracker::~MTPTracker() {
-  delete[] _edge_lengths;
-  delete _graph;
-  deallocate_array<scalar_t>(detection_scores);
-  deallocate_array<int>(allowed_motion);
-  delete[] exits;
-  delete[] entrances;
+  free();
 }
 
 int MTPTracker::early_pair_node(int t, int l) {
@@ -184,23 +187,21 @@ void MTPTracker::build_graph() {
   int nb_motions = 0, nb_exits = 0, nb_entrances = 0;
 
   for(int l = 0; l < nb_locations; l++) {
-    if(exits[l]) nb_exits++;
-    if(entrances[l]) nb_entrances++;
+    for(int t = 0; t < nb_time_steps; t++) {
+      if(exits[t][l]) nb_exits++;
+      if(entrances[t][l]) nb_entrances++;
+    }
     for(int m = 0; m < nb_locations; m++) {
-      if(allowed_motion[l][m]) nb_motions++;
+      if(allowed_motions[l][m]) nb_motions++;
     }
   }
 
   int nb_vertices = 2 + 2 * nb_time_steps * nb_locations;
 
   int nb_edges =
-    // The edges from the source to the first frame, and from the last
-    // frame to the sink
-    nb_locations * 2 +
     // The edges from the source to the entrances and from the exits
-    // to the sink (in every time frames but the first for the
-    // entrances, and last for the exits)
-    (nb_time_steps - 1) * (nb_exits + nb_entrances) +
+    // to the sink
+    nb_exits + nb_entrances +
     // The edges for the motions, between every successive frames
     (nb_time_steps - 1) * nb_motions +
     // The edges inside the duplicated nodes
@@ -226,30 +227,12 @@ void MTPTracker::build_graph() {
     }
   }
 
-  // The edges from the source to the first time frame
-
-  for(int l = 0; l < nb_locations; l++) {
-    node_from[e] = source;
-    node_to[e] = 1 + l + 0 * nb_locations;
-    _edge_lengths[e] = 0.0;
-    e++;
-  }
-
-  // The edges from the last frame to the sink
-
-  for(int l = 0; l < nb_locations; l++) {
-    node_from[e] = late_pair_node(nb_time_steps - 1, l);
-    node_to[e] = sink;
-    _edge_lengths[e] = 0.0;
-    e++;
-  }
-
   // The edges between frames, corresponding to allowed motions
 
   for(int t = 0; t < nb_time_steps - 1; t++) {
     for(int l = 0; l < nb_locations; l++) {
       for(int k = 0; k < nb_locations; k++) {
-        if(allowed_motion[l][k]) {
+        if(allowed_motions[l][k]) {
           node_from[e] = late_pair_node(t, l);
           node_to[e] = early_pair_node(t+1, k);
           _edge_lengths[e] = 0.0;
@@ -264,13 +247,13 @@ void MTPTracker::build_graph() {
 
   for(int t = 0; t < nb_time_steps; t++) {
     for(int l = 0; l < nb_locations; l++) {
-      if(t > 0 && entrances[l]) {
+      if(entrances[t][l]) {
         node_from[e] = source;
         node_to[e] = early_pair_node(t, l);
         _edge_lengths[e] = 0.0;
         e++;
       }
-      if(t < nb_time_steps - 1 && exits[l]) {
+      if(exits[t][l]) {
         node_from[e] = late_pair_node(t, l);
         node_to[e] = sink;
         _edge_lengths[e] = 0.0;