arXiv Computer Vision By Muxi Zha, Yang Shang, Wenlong Zhang, Qifeng Yu, Banglei Guan

Hierarchical Sparse Graph for Multi-dimensional Assignment in Event-based Tracking

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The paper introduces a Hierarchical Sparse Graph (HSG) for event‑based multi‑dimensional assignment, addressing the many‑to‑many tracklet association problem that arises when event detectors produce multiple spatially distinct tracklets per object. By modeling tracklet correlations with fuzzy logic and long‑range kinematic metrics, the authors avoid hard thresholds and integrate heterogeneous metrics into a unified graph partitioning framework. Experiments on eTram and Ev‑UAV datasets demonstrate that this training‑free method outperforms existing event‑based and most image‑based association models, achieving more than twice the performance of OC‑SORT in many‑to‑many scenarios.

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