使用自组织映射网络识别城市道路主要结构

Identifying Major Structures of Urban Roads Using Self-Organizing Map Networks

城市道路中主要结构的识别在路网综合、多尺度路网建模、导航等方面起着关键作用。本文提出一种使用自组织映射(SOM:the Self-Organizing Map)网络来同时识别城市道路中多行道和立交桥的方法。首先计算道路网眼的几何形态特征指标,然后利用SOM对道路网眼进行分类,根据得出的网眼和道路的空间关系来提取路网中的主要结构。实验结果表明,该方法能有效地识别出城市道路中的多行道和立交桥。

The identification of major structures in urban roads plays a key role in road network integration, multi-scale road networkmodeling, and navigation. This paper proposes a method to use the Self-Organizing Map （SOM） to identify multiple lanes and flyoversin urban roads simultaneously. First, calculate the shape descriptors of mesh surrounded by roads, then use the SOM to classify theroad mesh, and extract the major structure of the road network according to the spatial relationship between the mesh and the roads.The experimental results show that this method can effectively identify the multiple lanes and flyovers in urban roads.