| Multi-Layer Hierarchical Clustering of Pedestrian Trajectories for Automatic Counting of People in Video Sequences Recent countries visiting this post |  |
 | 8 | United States |
 | 3 |
| Multi-Layer Hierarchical Clustering of Pedestrian Trajectories for Automatic Counting of People in Video Sequences Recent countries visiting this post | |
| 8 | United States |
| 3 |