基于等高线树的洼地判别方法  

An Automatic Method for Selecting Depression Contour Lines Based on Contour Tree

作　　者：闫吉星[1] 李锡伟[1] 徐剑平[1] 

机构地区：[1]黑龙江地理信息工程院,黑龙江哈尔滨150086

出　　处：《测绘与空间地理信息》2010年第3期229-231,共3页Geomatics & Spatial Information Technology

摘　　要：等高线是地形图的重要要素,通过等高线的高程、空间或层次关系可以进行各种地形地貌的判读。等高线的层次关系通常利用等高线树来表达,本文使用了AcrObjects构建等高线树,并在等高线树的基础上,提出了一种自动判别洼地曲线的方法。Contour lines are important features in the topographic map.The depression contour lines can be selected from topographic map through the elevation,spatial and hierarchical relationship between contour lines.Using ArcObjects,Contour trees are built and an automatic method for selecting depression contour lines is proposed.

关 键 词：等高线树 ARCOBJECTS 洼地 自动判断 

分 类 号：P231.5[天文地球—摄影测量与遥感]