Title :
A Study on Extracting Terrain Characteristic Line from Large Valley DEM
Author_Institution :
Coll. of hydroelectricity & digitalization Eng., Huazhong Univ. of Sci. & Technol., Wuhan, China
Abstract :
The storage of large valley DEM data and the quick extraction of terrain structure lines becomes very important in river valley. A method of blocked storage and blocked reading of large valley DEM data is proposed. At the same time, the storage method, the quick extraction of terrain lines as well as the composition of large valley DEM data is discussed emphatically. Based on the above idea, the method of how to handle isolate points is put forward and the quick extraction of terrain structure lines of large valley DEM data is realized.
Keywords :
data structures; feature extraction; image representation; terrain mapping; river valley; storage method; terrain characteristic line extraction; terrain structure lines; Computer science; Data mining; Digital elevation models; Educational institutions; Geographic Information Systems; Hydroelectric power generation; Libraries; Rivers; Software engineering; Tree graphs; DEM; Digital Valley; multi-scale; representation; terrain characteristic line;
Conference_Titel :
Computer Science and Software Engineering, 2008 International Conference on
Conference_Location :
Wuhan, Hubei
Print_ISBN :
978-0-7695-3336-0
DOI :
10.1109/CSSE.2008.1170
