Modeling Method for Road Guide Signs Based on Intersection Features
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摘要: 将指路标志划分为各种路标指示项.结合道路网的拓扑结构,定义了路标指示项的状态函数集,并把路标指示项分为状态性标识、连接性标识和方向性标识3类.交叉口是指路标志必须反映的本质特征,也是指路标志建模的关键.基于交叉口特征函数集的指路标志建模方法是通过交叉口特征函数的运算确定路标指示项的状态函数集.以实际路网交叉口为例,构建了连接性标识模型.Abstract: The content of road guide signs was categorized into guide sign items,which were further classified into 3 categories: state signs,connection signs and direction signs.The state function set for the guide sign items was defined based on the road network topology.The key of road guide sign modeling is to indicate the characteristic of intersections.In the proposed modeling method,the state function set for the guide sign items is determined through calculation of the feature functions of intersections.As an example,a connection guide sign on an actual urban road network was obtained with the proposed method.
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Key words:
- road network topology /
- road guide sign /
- intersection /
- state function set /
- feature function set
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