|Table of Contents|

Research on the Influence Pattern of Elevation Annotation on DEM Accuracy(PDF)

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

Issue:
2010年03期
Page:
109-115
Research Field:
Publishing date:

Info

Title:
Research on the Influence Pattern of Elevation Annotation on DEM Accuracy
Author(s):
Shi Zhikuan1; 2; Tang Guoan2
1.Key Laboratory of Virtual Geographic Environment,Ministry of Education,Nanjing Normal University,Nanjing 210046,China 2. The Research C enter for Ch ina Land Policy, Nanj ing Agricu ltu ralUn ivers ity, N an jing 210095, C hina
Keywords:
DEM;  e levation po int;  annota tion po int;  anno tation dev ia tion index
PACS:
P208
DOI:
-
Abstract:
The position o f elevation po in t and the co rresponding annotation is not ex actly the sam e p lane on topograph ic m aps in the form of CAD, the DEM that d irectly ex tracted from the e lev ation annota tion po int w ill conta ins error. Based on the ana ly sis of the d istr ibu tion pattern between the elevation po int and elevation anno tation po in t, onem ethod o f recover e levation from annotation po int to e levation po in t are proposed through estab lishing spatial re lationsh ip betw een them, at the sam e tim e, so lutions are proposed to test the reliab ility of these re lationships, on the ana lysis o f e rror o f DEM g enerated by the annotation po ints w hich occur d isp lacement, the anno tation dev iation index is po inted out as a qua lity indicator to the qua lity o f e levation annotation, w hich w ill be the foundation o f topographic maps qua lity inspection.

References:

[ 1] Eklundh L, M artensson U. Rap id generation o f dig ita l e levation m ode ls from topog raph icm aps[ J]. Internationa l Journal o f Geographica l Inform ation System s, 1995, 9: 329-340.
[ 2] 李志林, 朱庆. 数字高程模型[M ]. 2版. 武汉: 武汉大学出版社, 2003: 12-28.
[ 3] 汪自军, 陈圣波. 利用DWG 数据建立DEM 关键技术研究[ J]. 计算机应用与软件, 2009, 26( 2) : 42-44.
[ 4] 李正海, 朱萍. 一种基于Au toCAD图形文件的DEM 构建方法[ J]. 河南理工大学学报: 自然科学版, 2008, 27( 4): 420-423.
[ 5] 唐诗华, 李洪玉, 谢勋峰. 在CAD平台下实现高程点智能展点的一种方法[ J]. 测绘通报, 2006( 4): 51-57.
[ 6] 李乃良, 杨孝安. 基于Au toCAD的地形图中高程注记的自动移位[ J]. 城市勘测, 2008( 2): 119-121.
[ 7] 汤国安, 刘学军, 闾国年. 数字高程模型及地学分析的原理与方法[M ]. 北京: 科学出版社, 2005: 73-100.
[ 8] 周启鸣, 刘学军. 数字地形分析[M ]. 北京: 科学出版社, 2006: 63-64.
[ 9] 汤国安, 杨昕. A rcGIS地理信息系统空间分析实验教程[M ] . 北京: 科学出版社, 2006: 363-421.

Memo

Memo:
-
Last Update: 2013-04-08