CANMOT: 自動運転におけるマルチオブジェクト追跡のためのクラス認識ノイズモデリング
CANMOT: Class-Aware Noise Modeling for Multi-Object Tracking in Autonomous Driving
カルマンフィルタベースの3Dマルチオブジェクト追跡において、物体クラスごとに異なるノイズ共分散を導入し、物体座標系で表現することで追跡性能を向上させ、IDスイッチを削減する手法を提案した。
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著者: Timo Osterburg, Stefan Schütte, Torsten Bertram
分類: cs.RO
原文アブストラクト
Kalman filter (KF)-based multi-object tracking (MOT) remains a strong baseline for autonomous driving due to its strong performance, computational efficiency and interpretability. In most practical systems, the process noise and measurement noise covariances are defined globally and shared across object classes, presuming identical uncertainty characteristics across heterogeneous traffic participants. This work revisits this assumption and proposes CANMOT, a class-aware and object-aligned noise modeling framework for KF-based 3D MOT. Class-specific diagonal process and measurement covariance matrices are introduced and optionally expressed in the object coordinate frame to preserve longitudinal-lateral anisotropy. Systematic experiments on the nuScenes benchmark show that class-aware and object-aligned noise modeling improves tracking performance and substantially reduces identity switches compared to state-of-the-art (SotA). In addition, the consistency of the estimated uncertainty is analyzed using the Average Normalized Estimation Error Squared (ANEES) and $\chi^2$-based violation tests. The results reveal severe overconfidence in standard KF-based MOT baselines. While the proposed formulation improves calibration without modifying the underlying filtering framework, it still exhibits substantial inconsistency, highlighting the need for further research in this area. Code is available at https://github.com/rst-tu-dortmund/learned-3d-nms.
