Added README.md

[mtp.git] / mtp_tracker.cc

diff --git a/mtp_tracker.cc b/mtp_tracker.cc
index b4e70ab..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) {
@@ -44,28 +44,25 @@ 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;
     }
   }
 
-  force_empty_first_frame = 0;
-  force_empty_last_frame = 0;
-
   _edge_lengths = 0;
   _graph = 0;
 }
@@ -77,27 +74,27 @@ void MTPTracker::write(ostream *os) {
 
   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;
 
-  (*os) << force_empty_first_frame << " " << force_empty_last_frame << 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;
@@ -111,7 +108,7 @@ void MTPTracker::write(ostream *os) {
 }
 
 void MTPTracker::read(istream *is) {
-  int l, t;
+  int l = 0, t = 0;
 
   (*is) >> l >> t;
 
@@ -119,18 +116,20 @@ void MTPTracker::read(istream *is) {
 
   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];
     }
   }
 
-  (*is) >> force_empty_first_frame >> force_empty_last_frame;
-
-  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++) {
@@ -159,7 +158,7 @@ MTPTracker::MTPTracker() {
   nb_time_steps = 0;
 
   detection_scores = 0;
-  allowed_motion = 0;
+  allowed_motions = 0;
 
   entrances = 0;
   exits = 0;
@@ -169,12 +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) {
@@ -193,10 +187,12 @@ 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++;
     }
   }
 
@@ -204,28 +200,13 @@ void MTPTracker::build_graph() {
 
   int nb_edges =
     // 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
     nb_locations * nb_time_steps;
 
-  // Edges from the source to the first frame
-  if(force_empty_first_frame) {
-    nb_edges += nb_entrances;
-  } else {
-    nb_edges += nb_locations;
-  }
-
-  // Edges from the last frame to the sink
-  if(force_empty_last_frame) {
-    nb_edges += nb_exits;
-  } else {
-    nb_edges += nb_locations;
-  }
-
   int *node_from = new int[nb_edges];
   int *node_to = new int[nb_edges];
 
@@ -246,34 +227,12 @@ void MTPTracker::build_graph() {
     }
   }
 
-  // The edges from the source to the first time frame
-
-  for(int l = 0; l < nb_locations; l++) {
-    if(!force_empty_first_frame || entrances[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++) {
-    if(!force_empty_last_frame || exits[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;
@@ -288,13 +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;