arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2402.12968cs.CV
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MapTrack:在地图中进行跟踪

MapTrack: Tracking in the Map

The Hong Kong University of Science and Technology (Guangzhou)(香港科技大学(广州));Beijing Jiaotong University(北京交通大学)

Fei Wang, Ruohui Zhang, Chenglin Chen, Min Yang, Yun Bai

AI总结:

本文提出 MapTrack 跟踪框架,通过概率图、预测图和协方差自适应卡尔曼滤波三个轻量算法,在遮挡和拥挤场景下优先信任状态预测,显著提升 DeepSORT 的鲁棒性,并在 MOT17 和 MOT20 上达到最先进性能。

摘要:

多目标跟踪(MOT)旨在为每个目标维持稳定且不间断的轨迹。大多数最先进的方法首先在每一帧中检测目标,然后利用运动模型和外观相似度在新检测结果与现有轨迹之间进行数据关联。尽管取得了令人满意的结果,但遮挡和人群拥挤很容易导致漏检和检测失真,进而引发漏关联和错误关联。在本文中,我们首先重新审视经典跟踪器 DeepSORT,通过在拥挤和遮挡场景中当检测结果不可用或质量较低时更加信任预测,显著增强了其对人群和遮挡的鲁棒性。具体而言,我们提出了一个新框架,包含三个轻量级且即插即用的算法:概率图、预测图和协方差自适应卡尔曼滤波器。概率图用于判断未被检测到的目标是真的从视野中消失(例如,离开图像或进入建筑物),还是仅因遮挡或其他原因暂时未被检测到。仍在概率图内的未检测目标的轨迹直接通过状态估计进行延长。预测图判断目标是否处于人群中,当观测发生严重形变时,我们通过协方差自适应卡尔曼滤波器优先采用状态估计而非观测。所提出的方法名为 MapTrack,在 MOT17 和 MOT20 等流行的多目标跟踪基准上取得了最先进的结果。尽管性能优越,我们的方法仍然简单、在线且实时。代码将在之后开源。

英文摘要:

Multi-Object Tracking (MOT) aims to maintain stable and uninterrupted trajectories for each target. Most state-of-the-art approaches first detect objects in each frame and then implement data association between new detections and existing tracks using motion models and appearance similarities. Despite achieving satisfactory results, occlusion and crowds can easily lead to missing and distorted detections, followed by missing and false associations. In this paper, we first revisit the classic tracker DeepSORT, enhancing its robustness over crowds and occlusion significantly by placing greater trust in predictions when detections are unavailable or of low quality in crowded and occluded scenes. Specifically, we propose a new framework comprising of three lightweight and plug-and-play algorithms: the probability map, the prediction map, and the covariance adaptive Kalman filter. The probability map identifies whether undetected objects have genuinely disappeared from view (e.g., out of the image or entered a building) or are only temporarily undetected due to occlusion or other reasons. Trajectories of undetected targets that are still within the probability map are extended by state estimations directly. The prediction map determines whether an object is in a crowd, and we prioritize state estimations over observations when severe deformation of observations occurs, accomplished through the covariance adaptive Kalman filter. The proposed method, named MapTrack, achieves state-of-the-art results on popular multi-object tracking benchmarks such as MOT17 and MOT20. Despite its superior performance, our method remains simple, online, and real-time. The code will be open-sourced later.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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