从规则格网DEM自动提取汇水区域及其子区域的方法

被引:42
作者
朱庆
田一翔
张叶廷
机构
[1] 武汉大学测绘遥感信息工程国家重点实验室,武汉大学测绘遥感信息工程国家重点实验室,武汉大学测绘遥感信息工程国家重点实验室湖北武汉,湖北武汉,湖北武汉
关键词
汇水区域; 汇水子区域; 规则格网DEM; 水文分析;
D O I
暂无
中图分类号
P333 [水文分析与计算];
学科分类号
081501 ;
摘要
从DEM自动提取的汇水区域及其子区域信息对进一步的水文分析有着重要的辅助作用。在经过洼地处理的DEM及得到水流方向矩阵的基础上,本文提出并实现了一种汇水区域及其子区域的提取算法。该算法首先提取整个DEM区域内每条河流的汇水区域,然后按照不同的要求划分子区域。经过试验,与现有的方法相比,该算法在提取效率和结果准确性方面都有明显提高。
引用
收藏
页码:129 / 133
页数:5
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