The invention provides a multi-level road-level floating vehicle abnormal track detection method. The method comprises the following steps of: extracting GPS sampling points with the same license plate number and progressively increased timestamps in a track data point set to form track sequences of different vehicles; matching the extracted travel track data with an urban road network so as to convert a track point sequence into a road-level road section sequence; and selecting a candidate track with the highest matching degree as the moving track of the travel track data in the urban road network, and expressing the travel path of the original travel track by using the road section sequence where the track point in the candidate track with the highest matching degree is located. According to the method, the condition that a floating vehicle is constrained by the road network is considered, the abnormal track of the floating vehicle is detected globally and locally, and the detected abnormal track is more comprehensive and accurate.
本发明提供了一种多层次道路级浮动车异常轨迹探测方法,包括:提取轨迹数据点集中车牌号相同、时间戳递增的GPS采样点,组成不同车辆的轨迹序列;将提取得到的出行轨迹数据与城市路网进行匹配,从而将轨迹点序列转化为道路级的路段序列;选择匹配度最高的候选轨迹为出行轨迹数据在城市路网中的移动轨迹,并使用匹配度最高的候选轨迹中轨迹点所在的路段序列表达原始出行轨迹的行驶路径。本发明方法顾及浮动车受到路网约束的条件,从全局和局部探测浮动车异常轨迹,使探测的异常轨迹更加全面和准确。
Multi-level road-level floating car abnormal track detection method
多层次道路级浮动车异常轨迹探测方法
2020-06-19
Patent
Electronic Resource
Chinese
IPC: | G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS |
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