Unifying Short and Long-Term Tracking with Graph Hierarchies

Figure 1. (a) Local tracker focusing on short-term scenarios and lacking robustness at long-term identity preservation (b) Graph-based tracker tackling longer-term association but unable to cover large time gaps due to its limited scalability (c) Hybrid multi-level tracker engineering a combination of techniques but still struggling with scalability (d) Our unified hierarchical tracker with high scalability.