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《南京师大学报（自然科学版）》[ISSN:1001-4616/CN:32-1239/N]

Issue:

2013年01期

Page:

122-126

Research Field:

地理学

Publishing date:

Info

Title:

An Adaptive Method of Determining DEM Interpolation Neighbors

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)

Keywords:

interpolation neighborhood; adaptive; moving surface

PACS:

P28

DOI:

-

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.

References:

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Memo

Memo:

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Common functions

Last Update: 2013-03-31