顾及形态特征和语义信息的双线道路识别方法

A Method Considering Shape Feature and Semantic Information for Dual-Carriageway Roads Recognition

双线道路识别与提取是城市路网综合的关键。提出了一种城市双线道路提取的方法。在构建好的道路网眼的基础上,综合考虑双线道路网眼形态特征以及构成网眼路段之间的语义相似度,设计了识别双线道路网眼的综合指标。通过判断网眼综合指标确定最终的双线道路网眼,最后根据识别出的双线道路网眼提取出双线道路。实验表明,该方法能有效提取出城市道路数据中的双线道路。

Dual-carriageway roads recognition and extraction is the key step of urban road network generalization.This paper proposes a method of extracting urban dual-carriageway road. On the basis of the constructed road meshes, a composite indicator for dual-carriageway road mesh recognition was designed by comprehensively considering morphological characteristics of road mesh and semantic similarity of sections constituting the dual-carriageway road mesh. After analyzing the relation between mesh composite indicator and threshold, the final dual-carriageway road meshes are recognized. Finally, dual-carriageway roads are obtained based on dual-carriageway road meshes.Experimental results show that this method can effectively extract the dual-carriageway roads of urban road data.