Lossless Visible Three-Dimensional Watermark of Digital Elevation Model Data

2012 ◽  
pp. 138-147
Author(s):  
Yong Luo ◽  
Yan Zhao ◽  
Lei Cheng ◽  
Jianxin Wang ◽  
Xuchong Liu
Keyword(s):  
Digital Elevation Model ◽  
Three Dimensional ◽  
Model Data ◽  
Digital Elevation ◽  
Elevation Model ◽  
Digital Elevation Model Data

scholarly journals TOPOGRAPHICAL HILL SHADING MAP PRODUCTION BASED TIANDITU (MAP WORLD)

2018 ◽  
Vol XLII-3 ◽  
pp. 1681-1684
Author(s):  
C. Wang ◽  
Z. Zha ◽  
D. Tang ◽  
J. Yang
Keyword(s):  
Digital Elevation Model ◽  
Three Dimensional ◽  
Information Service ◽  
Model Data ◽  
Geospatial Information ◽  
The Public ◽  
Digital Elevation ◽  
On Line ◽  
Elevation Model ◽  
Digital Elevation Model Data

TIANDITU (Map World) is the public version of National Platform for Common Geospatial Information Service, and the terrain service is an important channel for users on the platform. With the development of TIANDITU, topographical hill shading map production for providing and updating global terrain map on line becomes necessary for the characters of strong intuition, three-dimensional sense and aesthetic effect. As such, the terrain service of TIANDITU focuses on displaying the different scales of topographical data globally. And this paper mainly aims to research the method of topographical hill shading map production globally using DEM (Digital Elevation Model) data between the displaying scales about 1 : 140,000,000 to 1 : 4,000,000, corresponded the display level from 2 to 7 on TIANDITU website.

Food Submergence Calculation and Analysis Using Digital Elevation Model and Geographical Information System

2014 ◽  
Vol 571-572 ◽  
pp. 792-795
Author(s):  
Xiao Qing Zhang ◽  
Kun Hua Wu
Keyword(s):  
Information System ◽  
Digital Elevation Model ◽  
Flood Control ◽  
Large Scale ◽  
Geographical Information ◽  
Economic Losses ◽  
Model Data ◽  
Digital Elevation ◽  
Elevation Model ◽  
Digital Elevation Model Data

Floods usually cause large-scale loss of human life and wide spread damage to properties. Determining flood zone is the core of flood damage assessment and flood control decision. The aim of this paper is to delineate the flood inundation area and estimate economic losses arising from flood using the digital elevation model data and geographic information system techniques. Flood extent estimation showed that digital elevation model data is very precious to model inundation, however, in order to be spatially explicit flood model, high resolution DEM is necessary. Finally, Analyses for the submergence area calculation accuracy.

On the use of digital elevation model data for Hortonian and fractal analyses of channel networks

1993 ◽  
Vol 29 (8) ◽  
pp. 2599-2613 ◽  
Author(s):  
Keith R. Helmlinger ◽  
Praveen Kumar ◽  
Efi Foufoula-Georgiou
Keyword(s):  
Digital Elevation Model ◽  
Model Data ◽  
Channel Networks ◽  
Digital Elevation ◽  
Fractal Analyses ◽  
Elevation Model ◽  
Digital Elevation Model Data
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