(1. 中南大學(xué) 信息物理學(xué)院，長(zhǎng)沙 410083;
2. 湖南省建筑學(xué)校，湘潭 411001)
摘 要: 討論了地形圖矢量化后的幾項(xiàng)處理工作，如曲線上點(diǎn)的稀釋、直角化處理、重復(fù)點(diǎn)線的刪除、接邊等。概述了目前已有的幾種曲線點(diǎn)抽稀方法，提出了一種新的方法——逐點(diǎn)篩選法，并且用實(shí)例證明了它的實(shí)用性；最后，簡(jiǎn)要介紹了進(jìn)行直角化處理、重復(fù)點(diǎn)線的刪除以及接邊時(shí)要注意的問(wèn)題。
關(guān)鍵字: 矢量化；抽稀；逐點(diǎn)篩選法；直角化處理
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
