A multiresolution terrain model for efficient visualization query processing

Xu, K, Zhou, XF, Lin, XM, Shen, HT and Deng, K (2006) A multiresolution terrain model for efficient visualization query processing. IEEE Transactions On Knowledge And Data Engineering, 18 10: 1382-1396.

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Author Xu, K
Zhou, XF
Lin, XM
Shen, HT
Deng, K
Title A multiresolution terrain model for efficient visualization query processing
Journal name IEEE Transactions On Knowledge And Data Engineering   Check publisher's open access policy
ISSN 1041-4347
Publication date 2006
Sub-type Article (original research)
DOI 10.1109/TKDE.2006.151
Volume 18
Issue 10
Start page 1382
End page 1396
Total pages 15
Editor F.B. Bastani
S. McConnell
Place of publication Los Alamitos
Publisher IEEE Computer Soc
Collection year 2006
Language eng
Subject C1
280103 Information Storage, Retrieval and Management
700103 Information processing services
Abstract Multiresolution Triangular Mesh (MTM) models are widely used to improve the performance of large terrain visualization by replacing the original model with a simplified one. MTM models, which consist of both original and simplified data, are commonly stored in spatial database systems due to their size. The relatively slow access speed of disks makes data retrieval the bottleneck of such terrain visualization systems. Existing spatial access methods proposed to address this problem rely on main-memory MTM models, which leads to significant overhead during query processing. In this paper, we approach the problem from a new perspective and propose a novel MTM called direct mesh that is designed specifically for secondary storage. It supports available indexing methods natively and requires no modification to MTM structure. Experiment results, which are based on two real-world data sets, show an average performance improvement of 5-10 times over the existing methods.
Keyword Multiresolution Visualization
Spatial Database Systems
Computer Science, Artificial Intelligence
Computer Science, Information Systems
Engineering, Electrical & Electronic
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

 
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Created: Wed, 15 Aug 2007, 08:19:37 EST