The invention provides a vehicle trajectory calculation method based on space-time similarity, and the method comprises the following specific steps: S1, enabling vehicle speed data to be fused with afour-dimensional graph new road network, calculating the spatial similarity of a road network, and obtaining a four-dimensional graph new navigation level line network with vehicle speed information;S2, mistakenly eliminating the license plate recognition data captured by the checkpoint, restoring all vehicle passing checkpoint points, and generating a one-way travel chain of all vehicles; S3, calculating all driving paths and time consumption data sets between the checkpoints, and calculating the path occurrence probability of all tracks from the spatial dimension; and S4, calculating the time consumption similarity of each path through a neighbor algorithm, obtaining the time consumption occurrence probability from the time dimension, and judging the track with the highest possibilityas the actual track between the checkpoints. According to the method provided by the invention, two aspects of the path space dimension and the time dimension are comprehensively considered, a more accurate matching result can be calculated for different road conditions, and the source and the destination of the vehicle can be truly and objectively understood.

    本发明提供一种基于时空相似度的车辆轨迹推算方法,所述方法的具体步骤如下:S1、将车速数据与四维图新路网融合,计算道路网络空间相似度,并得到具有车速信息的四维图新导航级线路网络;S2、对卡口捕获的车牌识别数据进行错误剔除,还原所有车辆途径卡口点,生成所有车辆的单程出行链;S3、计算卡口间所有行车路径和时耗数据集,从空间维度计算所有轨迹的路径发生概率;S4、通过近邻算法计算每段路径的时耗相似度,从时间维度得到时耗发生概率,将可能性最高的轨迹判定为卡口间实际轨迹。本发明提供的方法综合考虑路径空间维度和时间维度两个方面,能针对不同的路况计算出更准确的匹配结果,可以真实、客观的了解车辆的来源和去向。


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    Title :

    Vehicle trajectory calculation method based on space-time similarity


    Additional title:

    一种基于时空相似度的车辆轨迹推算方法


    Contributors:
    JING GUOSHENG (author) / ZHOU ZHIHUA (author) / HU JINGSONG (author) / GAN YONGHUA (author) / LIN XIAOSHENG (author) / ZHANG WUTING (author) / SHEN WENTAO (author) / ZHENG GUIBING (author)

    Publication date :

    2021-02-02


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS



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