[1]朱 莹,刘学军,赵 静.DEM内插邻域自适应确定方法[J].南京师大学报(自然科学版),2013,36(01):122-126.
　Zhu Ying,Liu Xuejun,Zhao Jing.An Adaptive Method of Determining DEM Interpolation Neighbors[J].Journal of Nanjing Normal University(Natural Science Edition),2013,36(01):122-126.
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DEM内插邻域自适应确定方法()
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《南京师大学报（自然科学版）》[ISSN:1001-4616/CN:32-1239/N]

卷:
第36卷
期数:
2013年01期
页码:
122-126
栏目:
地理学
出版日期:
2013-03-31

文章信息/Info

Title:
An Adaptive Method of Determining DEM Interpolation Neighbors
作者:
朱 莹1; 刘学军2; 赵 静1
(1.南京晓庄学院生物化工与环境工程学院,江苏 南京 211171) (2.南京师范大学虚拟地理环境教育部重点实验室,江苏 南京 210023)
Author(s):
Zhu Ying1; Liu Xuejun2; Zhao Jing1
(1.School of Biochemical and Environmental Engineering,Nanjing Xiaozhuang University,Nanjing 211171,China) (2.Key Laboratory of Virtual Geographic Environment of Ministry of Education,Nanjing Normal University,Nanjing 210023,China)
关键词:
内插邻域; 自适应; 移动曲面法
Keywords:
interpolation neighborhood; adaptive; moving surface
分类号:
P28
摘要:
用内插方法构建DEM是地表建模和分析的基本思路,内插邻域的大小影响计算结果的精度,也进一步影响着地学分析的结果.本文分析了内插邻域的特点,对于具体的内插方法,内插邻域存在基本的取值范围,基于这个范围对待插值点的邻近采样点进行计算,根据计算结果对待插值点进行自适应内插.实验选择模拟数据和实测数据,对根据点数确定邻域的方法和自适应方法的计算结果进行比较,发现采用自适应方法计算得到的结果精度较高.
Abstract:
DEM interpolation is an essential tool for terrain surface modeling and analysis.The size of interpolation neighborhood affects the accuracy of calculation results,and it affects geographic analysis results further.This paper analyzes the characteristics of interpolation neighborhood.There are minimum and maximum values of interpolation neighborhood of specific interpolation methods.The elevation of sampling points adjacent to interpolation point is calculated based on the range of interpolation neighborhood.The elevation of interpolation points is calculated by adaptive methods according to the results.The simulated and measured data are selected as the experimental data.The neighborhood of essential method is determined by the number of points.The calculation results of essential method and adaptive method are compared,and the result of adaptive method has higher precision.

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备注/Memo

备注/Memo:
收稿日期:2012-08-25.
基金项目:国家自然科学基金(40971230、41201151)、江苏省教育厅自然科学基金(11KJD420001)、南京晓庄学院青年科研项目(2010KYQN26).
通讯联系人:朱莹,讲师,研究方向:数字地形分析、GIS应用系统架构与设计.E-mail:luckyzhuying@yahoo.com.cn.
更新日期/Last Update: 2013-03-31