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Proceedings Paper

Modeling the digital Earth in VRML
Author(s): Martin Reddy; Yvan G. Leclerc; Lee Iverson; Nat Bletter; Kiril Vidimce
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Paper Abstract

This paper describes the representation and navigation of large, multi-resolution, georeferenced datasets in VRML97. This requires resolving nontrivial issues such as how to represent deep level of detail hierarchies efficiently in VRML; how to model terrain using geographic coordinate systems instead of only VRML's Cartesian representation; how to model georeferenced coordinates to sub-meter accuracy with only single-precision floating point support; how to enable the integration of multiple terrain datasets for a region, as well as cultural features such as buildings and rods; how to navigate efficiently around a large, global terrain dataset; and finally, how to encode metadata describing the terrain. We present solutions to all of these problems. Consequently, we are able to visualize geographic dat ain the order of terabytes or more, from the globe down to millimeter resolution, and in real-time, using standard VRML97.

Paper Details

Date Published: 5 May 2000
PDF: 9 pages
Proc. SPIE 3905, 28th AIPR Workshop: 3D Visualization for Data Exploration and Decision Making, (5 May 2000); doi: 10.1117/12.384864
Show Author Affiliations
Martin Reddy, SRI International (United States)
Yvan G. Leclerc, SRI International (United States)
Lee Iverson, SRI International (United States)
Nat Bletter, SRI International (United States)
Kiril Vidimce, Mississippi State Univ. (United States)

Published in SPIE Proceedings Vol. 3905:
28th AIPR Workshop: 3D Visualization for Data Exploration and Decision Making
William R. Oliver, Editor(s)

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