(1. 中南大学 信息物理学院,长沙 410083;
2. 湖南省建筑学校,湘潭 411001)
摘 要: 讨论了地形图矢量化后的几项处理工作,如曲线上点的稀释、直角化处理、重复点线的删除、接边等。概述了目前已有的几种曲线点抽稀方法,提出了一种新的方法——逐点筛选法,并且用实例证明了它的实用性;最后,简要介绍了进行直角化处理、重复点线的删除以及接边时要注意的问题。
关键字: 矢量化;抽稀;逐点筛选法;直角化处理
topographic maps
(1. College of Physical Information,Central South University,
Changsha 410083,China;
2. Hunan Construction School,Xiangtan 411001,China)
Abstract:The processing works after vectorizing topographic maps were discussed,such as diluting, right angle processing,deleting redundant points and lines. Present methods for diluting were briefly introduced, and a new method, selection from point to point, was put forward and demonstrated to be a practical method. In the end,several problems about right-angle processing,deleting redundant points and lines were s imply discussed.
Key words: vectorizing; diluting; selection from point to point; right-angle processing