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基于DEM自动提取泥石流沟谷边缘线算法的试验 被引量:3

The Test of Auto Extract Debris Flow Channels' Edge Arithmetic by DEM
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摘要 很多泥石流流域侵蚀程度的描述量,与冲沟的边缘长度有关。本文提出了一种基于DEM自动提取沟边缘线的算法。提取步骤分为DEM平滑去除洼地、判断沟谷中心线、去短枝、初步提取边缘线、细化等几个步骤。最后按照这一方法以成昆铁路沿线的普歪沟为实验区,提取了一条泥石流沟的沟谷边缘线。并将其与同一图像目视解译勾绘的沟谷边缘线比较,表明这种方法不但能够将沟的边缘线提取出来,而且提取出的边缘线更能够表现沟的细部特征。
作者 王一川 秦军
出处 《四川测绘》 2006年第1期28-31,共4页 Surveying and Mapping of Sichuan
基金 铁道部科学研究项目:96G31 国家自然科学基金项目:40271092
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