Paper Info
Title
A new method of generating grid DEM from contour lines
Abstract
Digital elevation model (DEM) data are widely used in many research areas such as hydrological analysis and soil erosion models. To generate an accurate DEM is very important to the validity of such researches. Generating DEM from contour lines is now a main method to get grid DEM. In the implementation of GIS software, usually the elevation of a cell with only one contour line (SVC) is simply assigned with the contour line elevation when discretizing vector contour lines. But most of the time, the elevation of the contour line can't characterize the elevation of the SVC accurately. In this paper, we choose different resolutions (cell size) to investigate the frequency of SVCs during DEM generating and the errors created by simply assigning their elevations with the contour line elevations. A new method is given, in which we analyze the spatial relationship between the SVC and the corresponding contour line. And at last, a zone of Inner Mongolia is chosen to prove the validity of the new method.
Year
DOI
Venue
2005
10.1109/IGARSS.2005.1526261
IGARSS
Keywords
Field
DocType
terrain mapping,contour line,vector contour line discretization,digital elevation model,geographic information systems,inner mongolia,china,grid digital elevation model generation,single value cell,soil erosion model,contour line elevation,gis software,svc,spatial relationship,hydrological analysis,mesh generation,interpolation,spatial relationships,frequency,remote sensing,spatial resolution,soil erosion,digital elevation models
Terrain mapping,Computer vision,Geographic information system,Discretization,Computer science,Remote sensing,Contour line,Spatial relationship,Digital elevation model,Artificial intelligence,Elevation,Grid
Conference
Volume
Issue
ISBN
1
null
0-7803-9050-4
Citations 
PageRank 
References 
1
0.35
2
Authors
4
Name
Order
Citations
PageRank
Darning Wang110.35
Yuan Tian235.43
Yong Gao310.35
Lun Wu4266.94