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Proceedings Paper

Multi-flow direction algorithms for extracting drainage network based on digital elevation model
Author(s): Yu Zhang; Yongxue Liu; Zhenjie Chen
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Paper Abstract

A set of multi-flow direction algorithms for extracting drainage network form digital elevation model (DEM) based on ground water overflow model is introduced. As single-flow direction algorithms, the algorithms perform some tasks as following: depression identification and treatment; relief increment of flat areas; flow vector determination and drainage network. But in the flow vector determination process, we use multi-flow direction algorithm. We extract drainage network form a set of digital elevation model in Changsha, Hunan Province using this method to test these algorithms. The experiment result shows that these algorithms are efficient and avoid parallel currents, the shortcoming of single-flow direction algorithms.

Paper Details

Date Published: 25 July 2007
PDF: 9 pages
Proc. SPIE 6753, Geoinformatics 2007: Geospatial Information Science, 67532B (25 July 2007); doi: 10.1117/12.761930
Show Author Affiliations
Yu Zhang, Nanjing Univ. (China)
Yongxue Liu, Nanjing Univ. (China)
Zhenjie Chen, Nanjing Univ. (China)

Published in SPIE Proceedings Vol. 6753:
Geoinformatics 2007: Geospatial Information Science

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