基于图形整体拓扑结构的地图线对象矢量化

Mapline Objects Vectorization Based on the Picture Topology

地图自动矢量化是地理信息系统（GIS）发展的迫切需要。本文从图形整体拓扑特征出发，引入节点域的概念，并介绍了一种二值化扫描地图图像中线对象的整体矢量化方法。

Map automatic vectorization is significent for the development of the Geographics Information Sytem.In this paper,from the point of picture topology on the whole,the conception of node area is introduced,and the method of picture vectorization wholly is explained in the line objects of the scaned binary map picture.