数字地图局部自动生成与半自动编辑

数字地图的局部自动生成与半自动编辑系统由道路编辑模块和房屋编辑模块构成。文章详细描述了各模块中的半自动提取功能的算法，其中道路提取采用了滚球法，房屋提取采用的是基于几何关系的算法。所有半自动提取算法都在图形的基础上操作的，能保证有较好的通用性，不仅可用于纸面地图生成数字地图的开发过程，而且适用于从航空图像开发数字地图等用途。数字地图半自动编辑器已可作为一个独立的系统，在人机交互状态下自动／半自动生成数字道路地图和数字房屋地图。

Automation in Local Digital Map Generation and Semi-automatic Map Editor

The system consists of the functional modules of regional digital map generation, semi-automatic road editor and semi-automatic house editor. This paper describes the algorithms of the operations of each module in detail. Road extraction adopts rolling ball method and house extraction uses a geometry-based algorithm. All of the algorithms operate in the domain of image graphes of maps, which guarantee that the editor can be used in the development of creating digital map data from both pictorial map resources and aerial photo-image. The editor described in this paper can also be used as an independent system for automatic/semi-automatic digital map generator, creating digital road and house map data with human-computer interactions.