| 基于滤波方法的DEM尺度变换方法研究 |
| |
| 引用本文： | 杨勤科,DavidJupp,郭伟玲,李锐.基于滤波方法的DEM尺度变换方法研究[J].水土保持通报,2008,28(6):58-62. |
| |
| 作者姓名： | 杨勤科 DavidJupp 郭伟玲 李锐 |
| |
| 作者单位： | [1]中国科学院水利部水土保持研究所,陕西杨凌712100 [2]西北农林科技大学水土保持研究所,陕西杨凌712100 [3]澳大利亚联邦科学与工业研究组织大气与海洋研究所澳大利亚堪培拉,陕西杨凌712100 |
| |
| 基金项目： | 国家重点基础研究发展计划(973计划)资助(2007CB407203); 水利部公益性行业科研专项“黄土高原多沙粗沙区产沙经验数学模型研究与应用”(200701035-1) |
| |
| 摘 要： | 针对水土流失评价中地形因子的尺度效应问题，引入数字图像处理中的滤波分析方法，对5m分辨率DEM进行了滤波处理，并通过地形综合特征分析，坡度、曲率制图统计分析，派生等高线与河流提取统计分析等方法，对滤波处理的综合效果进行了分析论证。结果表明，利用滤波方法可以实现对高分辨率DEM的综合，利用比例尺因子为5或者10的处理，其结果与10m分辨率DEM或1：5万地形图在反映地形起伏方面相似。
|
| 关 键 词： | 数字高程模型 尺度变换 滤波 制图综合 |
| 收稿时间： | 2008/10/1 0:00:00 |
| 修稿时间： | 2008/10/21 0:00:00 |
Genaralizing the Fine Resolution DEMs with Filtering Method |
| |
| YANG Qin-ke,David Jupp,GUO Wei-ling and LI Rui.Genaralizing the Fine Resolution DEMs with Filtering Method[J].Bulletin of Soil and Water Conservation,2008,28(6):58-62. |
| |
| Authors: | YANG Qin-ke David Jupp GUO Wei-ling and LI Rui |
| |
| Institution: | Institute of Soil and Water Conservation,Chinese Academy of Sciences and Ministry of Water Resources,Yangling,Shaanxi 712100,China;Institute of Soil and Water Conservation,Northwest A & F University,Yangling,Shaanxi 712100,China;CSIRO Division of Marine and Atmospheric Research,GPO Box 3023,Canberra ACT 2601;Institute of Soil and Water Conservation,Chinese Academy of Sciences and Ministry of Water Resources,Yangling,Shaanxi 712100,China;Institute of Soil and Water Conservation,Northwest A & F University,Yangling,Shaanxi 712100,China;Institute of Soil and Water Conservation,Chinese Academy of Sciences and Ministry of Water Resources,Yangling,Shaanxi 712100,China;Institute of Soil and Water Conservation,Northwest A & F University,Yangling,Shaanxi 712100,China |
| |
| Abstract: | Oriented to examine the impacts of scales of topographic parameters in regional soil erosion assessment,filtering method was applied to generalize fine resolution DEM(cellsize = 5 m) in ERDAS and ArcGIS systems.The effects of generalization have been assessed by comparing the general topographic characters,statistical analyzing of derived slopes and curvatures,as well as resultant contours and streams.The results show that fine resolution DEMs can be generalized,and the generalized DEMs,with a scaling facto... |
| |
| Keywords: | digital elevation models scaling filter generalization |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《水土保持通报》浏览原始摘要信息 |
| 点击此处可从《水土保持通报》下载免费的PDF全文 |
|
