*
*/
-// Multi-Tracked Path
-
#include <iostream>
#include <fstream>
+#include <stdlib.h>
using namespace std;
-#include "tracker.h"
+#include "mtp_tracker.h"
//////////////////////////////////////////////////////////////////////
int nb_time_steps = 8;
int motion_amplitude = 1;
- Tracker *tracker = new Tracker();
+ 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
}
}
- // Then we two targets with the typical local minimum:
+ // Then we add two targets with a typical tracking local minimum
//
// * Target A moves from location 0 to the middle, stays there for a
- // while, and comes back, and is strongly detected on the first
+ // while, and comes back. It is strongly detected on the first
// half
//
// * Target B moves from location nb_locations-1 to the middle, stay
- // there for a while, and comes back, and is strongly detected on
+ // there for a while, and comes back. It is strongly detected on
// the second half
int la, lb; // Target locations
tracker->detection_scores[t][lb] = sb;
}
- { // Write down the tracker setting
+ { // 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();
<< " 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);
}