The invention discloses a road speed limit hierarchical mining method and system considering adjacent road section information. Comprising the following steps: data preprocessing: carrying out road network topology processing, track data cleaning and map matching; multi-modal feature design: multi-element and multi-order complementary features of the road network and trajectory data about road speed limit are analyzed and mined, and a high-discrimination description feature set about road speed limit is formed as a basis and basis for identifying the road speed limit; road network features and track features of the current road section and the left and right adjacent road sections are comprehensively considered, high and low speed information is considered, and road speed limit hierarchical mining is carried out. Compared with single-class features, the road section speed limit recognition accuracy is improved after the road network and the track features are integrated; compared with road section speed limit identification only considering the target road section, the road section speed limit identification effect considering the space adjacency information is better; compared with direct road section speed limit recognition, the road section speed limit recognition method considering the high and low speed information is higher in accuracy.
本发明公开了一种顾及邻接路段信息的道路限速层级挖掘方法和系统。包括:数据预处理:进行道路网拓扑处理,轨迹数据清洗及地图匹配;多模态特征设计:分析与挖掘道路网及轨迹数据关于道路限速的多元、多阶互补特征,形成关于道路限速的高判别性描述特征集,作为识别道路限速的基础与依据;道路限速挖掘:综合考虑当前路段、左右邻接路段的路网特征、轨迹特征,顾及高低速信息,进行道路限速的层级挖掘。与单类特征相比,集成路网与轨迹特征之后提高了路段限速识别准确率;与仅顾及目标路段进行路段限速识别相比,顾及空间邻接信息进行路段限速识别效果更好;与直接进行路段限速识别相比,顾及高低速信息的路段限速识别方法准确率更高。
Road speed limit hierarchical mining method and system considering adjacent road section information
一种顾及邻接路段信息的道路限速层级挖掘方法和系统
2023-12-29
Patent
Electronic Resource
Chinese
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