基于DEM的山地鞍部点分级提取方法Grading extraction method of saddles based on DEM
熊礼阳,汤国安,宴实江
摘要(Abstract):
本文以地形起伏变化较大的陕北黄土丘陵沟壑区为例,通过流域边界线上高程相对低点的自动识别,实现基于DEM数据的地面鞍部点自动获取。实验结果显示,采用该方法所提取的地面鞍部点具有层次结构显著、提取精度高、操作简便、便于确定重要性等级及与山顶点空间关系等优点,对于DEM地形特征点簇的构建与分析具有重要意义。
关键词(KeyWords): DEM;鞍部点;流域边界线;分级提取
基金项目(Foundation): 国家自然科学基金重点基金(40930531):基于DEM的黄土高原地貌形态空间格局研究
作者(Author): 熊礼阳,汤国安,宴实江
DOI: 10.16251/j.cnki.1009-2307.2013.02.054
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