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Journal of Applied Remote Sensing

Three-dimensional visualization simulation assessment system based on multi-source data fusion for the Wenchuan earthquake
Author(s): Xiangtao Fan; Xiaoping Du; Jian Tan; Junjie Zhu
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Paper Abstract

We have developed a visual three-dimensional simulation and assessment system of the Wenchuan earthquake zone using the Digital Earth concept and highly efficient spatial information visualization technology. Our goal is to provide a foundation for earthquake disaster relief and reconstruction. A number of major collapses, landslides, mud-rock flows and other geological disasters are analysed in the system, and the system can be used to monitor and analyse earthquake relief, rescue and insurance to provide first-hand source material for disaster situation assessment. Multi-sensor, multi-temporal, multi-resolution remote sensing data and multi-scale DEM data are integrated into this system, and produce a sequence of comprehensive resolution datasets. We present management methods for a dynamic multi-resolution terrain model and multi-level scene. These methods are based on the model division, delaminating algorithm, and make use of high-speed buffering mechanisms to achieve a multi-level large-scale real-time rendering of scenes in the disaster areas, which also effectively reduces the rendering delay, and achieves smooth, seamless roaming at different model levels.

Paper Details

Date Published: 1 May 2009
PDF: 9 pages
J. Appl. Rem. Sens. 3(1) 031640 doi: 10.1117/1.3154425
Published in: Journal of Applied Remote Sensing Volume 3, Issue 1
Show Author Affiliations
Xiangtao Fan, Institute of Remote Sensing Applications (China)
Xiaoping Du, Ctr. for Earth Observation and Digital Earth (China)
Jian Tan, Institute of Remote Sensing Applications (China)
Junjie Zhu, Ctr. for Earth Observation and Digital Earth (China)

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