The invention discloses an intersection vehicle cumulative arrival curve reconstruction method based on license plate identification data, which comprises the following steps: acquiring license plate data of upstream and downstream intersections, and extracting an observation value of an arrival curve at the section of an exit lane of the upstream intersection; constructing an arrival curve interpolation model based on a Gaussian process, and deducing upstream arrival information of an unmatched vehicle by taking part of observation values of an arrival curve as input; and simplifying the distribution of parameters in the arrival curve interpolation model by adopting a maximum and minimum tilt method, estimating the parameters in the arrival curve interpolation model by adopting maximum likelihood, and reconstructing an arrival curve at the section of the upstream intersection. According to the method, nonlinearity and uncertainty of vehicle arrival can be automatically captured, so that the reconstructed arrival curve has physical significance in practical application, and a reliable scheme is provided for accurate reconstruction of the arrival curve.
本发明公开了一种基于号牌识别数据的交叉口车辆累积到达曲线重构方法,包括:获取上下游交叉口的号牌数据,提取上游交叉口出口道断面处到达曲线的观测值;基于高斯过程构建到达曲线插值模型,以到达曲线的部分观测值为输入,对未匹配车辆的上游到达信息进行推断;采用最大最小倾斜方法对到达曲线插值模型中参数的分布进行简化,采用最大似然对到达曲线插值模型中的参数进行估计,重构上游交叉口断面处的到达曲线。本发明能够,能够自动捕获车辆到达的非线性和不确定性,使重构的到达曲线在实际应用中具有物理意义,为到达曲线的精准重构提供了可靠方案。
Intersection vehicle cumulative arrival curve reconstruction method based on license plate identification data
基于号牌识别数据的交叉口车辆累积到达曲线重构方法
2024-01-26
Patent
Elektronische Ressource
Chinesisch
IPC: | G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS |
Vehicle trajectory reconstruction method based on license plate recognition data
Europäisches Patentamt | 2021
|Europäisches Patentamt | 2022
|High-speed intersection license plate recognition system
Europäisches Patentamt | 2022
|Identification device, license plate arrangement and license plate system
Europäisches Patentamt | 2024
|