Measure |
Better |
Perfect |
Description |
MOTA |
higher |
100% | Multi-Object Tracking Accuracy (+/- denotes standard deviation across all sequences) [1]. This measure combines three error sources: false positives, missed targets and identity switches. |
IDF1 |
higher |
100% | ID F1 Score [2]. The ratio of correctly identified detections over the average number of ground-truth and computed detections. |
MOTP |
higher |
100% | Multi-Object Tracking Precision (+/- denotes standard deviation across all sequences) [1]. The misalignment between the annotated and the predicted bounding boxes. |
MT |
higher |
100% | Mostly tracked targets. The ratio of ground-truth trajectories that are covered by a track hypothesis for at least 80% of their respective life span. |
ML |
lower |
0% | Mostly lost targets. The ratio of ground-truth trajectories that are covered by a track hypothesis for at most 20% of their respective life span. |
FP |
lower |
0 | The total number of false positives. |
FN |
lower |
0 | The total number of false negatives (missed targets). |
Rcll |
higher |
100% | Ratio of correct detections to total number of GT boxes. |
Prcn |
higher |
100% | Ratio of TP / (TP+FP). |
FAF |
lower |
0 | The average number of false alarms per frame. |
ID Sw. |
lower |
0 | Number of Identity Switches (ID switch ratio = #ID switches / recall) [3]. Please note that we follow the stricter definition of identity switches as described in the reference |
Frag |
lower |
0 | The total number of times a trajectory is fragmented (i.e. interrupted during tracking). |
MTBFm |
higher |
#Frames | Monotonic Mean Time Between Failures [4]. The mean tracking duration with no errors (Identity switches, False Negatives, or Fragments) |
Hz |
higher |
Inf. | Processing speed (in frames per second excluding the detector) on the benchmark. The frequency is provided by the authors and not officially evaluated by the MOTChallenge. |