Multi-Target Multi-Camera Tracking has a wide range of applications and is the basis for many advanced inferences and predictions. This paper describes our solution to the Track 3 multi-camera vehicle tracking task in 2021 AI City Challenge (AICITY21). This paper proposes a multi-target multi-camera vehicle tracking framework guided by the crossroad zones. The framework includes: (1) Use mature detection and vehicle re-identification models to extract targets and appearance features. (2) Use modified JDETracker (without detection module) to track single-camera vehicles and generate single-camera tracklets. (3) According to the characteristics of the crossroad, the Tracklet Filter Strategy and the Direction Based Temporal Mask are proposed. (4) Propose Sub-clustering in Adjacent Cameras for multi-camera tracklets matching. Through the above techniques, our method obtained an IDF1 score of 0.8095, ranking first on the leaderboard. The code have released: https://github.com/LCFractal/AIC21-MTMC.

本文提出了一个基于路口区域的多目标多相机车辆跟踪框架，使用探测和车辆重新识别模型提取目标和外观特征，并提出了方向基于时间蒙版的tracklet过滤策略、相邻相机的子簇，通过以上技术，该方法在2021 AI City Challenge (AICITY21)中获得了0.8095的IDF1评分，位列第一。

城市级别的多摄像头车辆跟踪，由路口区域引导