Parallelizing flow-accumulation calculations on graphics processing units—From iterative DEM preprocessing algorithm to recursive multiple-flow-direction algorithm

As one of the important tasks in digital terrain analysis, the calculation of flow accumulations from gridded digital elevation models (DEMs) usually involves two steps in a real application: (1) using an iterative DEM preprocessing algorithm to remove the depressions and flat areas commonly contain...

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Bibliographic Details
Published in:	Computers & geosciences Vol. 43; pp. 7 - 16
Main Authors:	Qin, Cheng-Zhi, Zhan, Lijun
Format:	Journal Article
Language:	English
Published:	Elsevier Ltd 01.06.2012
Subjects:	Accumulations Algorithms Computation computers DEM preprocessing digital elevation models Digital terrain analysis Discrete element method Flow accumulation Graphics processing unit (GPU) Mathematical models Multiple-flow-direction algorithm (MFD) Parallel computing Parallel processing Preprocessing Strategy Digital terrain analysis Multiple-flow-direction algorithm (MFD) DEM preprocessing Parallel computing Graphics processing unit (GPU) Flow accumulation
ISSN:	0098-3004, 1873-7803
Online Access:	Get full text
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