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基于视频与检测器数据组成的语义层次交通事件检测

, PP. 118-123

Keywords: 交通工程,事件检测,语义层次,检测器数据,车辆跟踪,目标地图

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Abstract:

车辆跟踪中普遍存在车辆遮挡将直接影响事件检测精度的情况。为了解决这一问题,在介绍车辆跟踪算法基本原理的基础上,提出了一种基于视频与检测器数据组成的语义层次交通事件检测算法。该算法先应用时空马尔可夫随机场模型进行车辆跟踪,得到交通流基本参数,然后结合安装在道路下游的检测器获得的交通流数据一起,采用语义层次算法对交通事件进行检测。为了验证算法的准确性,最后对该算法与不使用检测器数据算法进行比较,发现使用检测器数据算法的检测率要高。通过研究得出基于视频与检测器数据组成的语义层次算法在交通量比较拥挤且车辆出现相互遮挡的情况下,能准确判断交通事件发生,对缓解交通拥挤和减少交通事故有重要的意义。

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