The invention relates to an intersection traffic conflict risk prediction method and system, belongs to intersection traffic safety, and is used for solving the problem that a complex and dynamic space-time dependency relationship between intersection conflict risk sequences is difficult to simulate in the prior art. According to the scheme, dynamic representation of an intersection conflict risk evolution mode is promoted by constructing a conflict risk map, and a risk prediction model is constructed. The risk prediction model obtains local spatial features based on the conflict risk map sequence, time features related to the local spatial features are embedded in the local spatial features to obtain first spatial-temporal features, and time features related to the first spatial-temporal features are embedded in the first spatial-temporal features to obtain second spatial-temporal features. According to the scheme, the intersection conflict risk space-time evolution mode characteristics are stably captured, and the accuracy of intersection traffic conflict risk real-time prediction is improved.
本发明涉及交叉口交通冲突风险预测方法、系统,属于交叉口交通安全,用于解决现有技术难于模拟交叉口冲突风险序列之间复杂且动态的时空依赖关系的问题。在本案中,通过构建冲突风险图来促进交叉口冲突风险演变模式的动态表征,并构建风险预测模型。所述风险预测模型基于冲突风险图序列获取局部空间特征,在局部空间特征上嵌入关于局部空间特征的时间特征,获得第一时空特征,在第一时空特征上嵌入关于第一时空特征的时间特征,获得第二时空特征。本方案通过稳定捕获交叉口冲突风险时空演变模式特征,提高交叉口交通冲突风险实时预测的准确性。
Intersection traffic conflict risk prediction method and system
交叉口交通冲突风险预测方法、系统
2024-08-30
Patent
Electronic Resource
Chinese
IPC: | G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS / G06F ELECTRIC DIGITAL DATA PROCESSING , Elektrische digitale Datenverarbeitung / G06N COMPUTER SYSTEMS BASED ON SPECIFIC COMPUTATIONAL MODELS , Rechnersysteme, basierend auf spezifischen Rechenmodellen |
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