The invention discloses a commuting vehicle space-time trajectory reconstruction method and system based on license plate recognition data. The method comprises: acquiring information; based on the time of the individual vehicle passing through each checkpoint of the urban road, subtracting the adjacent recorded time values of the same license plate, and obtaining the travel time of the vehicle passing through the two point locations; obtaining the travel speed of the vehicle by combining the road topology information with the travel time information of each road section; identifying a commuting vehicle; obtaining an original travel path of the vehicle: sorting the license plate recognition records according to license plate numbers and vehicle passing time, so as to obtain an equipment point position through which each vehicle passes, and representing the equipment point position as a vehicle track; taking the distance between different tracks as a reference index, and calculating thevehicle space-time track similarity; and completing the commuting track based on the vehicle space-time track similarity. By utilizing the traffic distribution characteristics of commuting vehicles,not only is the spatial position loss of the track completed, but also the precision of time node restoration is improved, and the time of the commuting vehicles appearing at each intersection in theroad network can be more accurately obtained.
本发明公开了基于车牌识别数据的通勤车辆时空轨迹重构方法及系统,采集信息;基于个体车辆通过城市道路各卡口的时间,对同一车牌相邻记录时间值作差,获取该车辆通过两点位的旅行时间;结合道路拓扑信息与各路段旅行时间信息,即可获得车辆的行程车速;识别出通勤车辆;获取车辆原始出行路径:将车牌识别记录按照车牌号、过车时间排序,即可获得每辆车经过的设备点位,表示成车辆轨迹;以不同轨迹之间的距离为参考指标,计算车辆时空轨迹相似度:基于车辆时空轨迹相似度对通勤轨迹补全。利用通勤车辆的交通分布特性,不仅补全轨迹的空间位置缺失,对时间节点的还原也提高了精度,能够更准确地获知通勤车辆出现在路网中各交叉口的时间。
Commuting vehicle space-time trajectory reconstruction method and system based on license plate recognition data
基于车牌识别数据的通勤车辆时空轨迹重构方法及系统
2020-06-05
Patent
Electronic Resource
Chinese
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