GVU Technical Report Number:
GIT-GVU-95-14
Title:
Virtual GIS: A Real-Time 3D Geographic Information System
Authors:
David Koller
Peter LIndstrom
William Ribarsky
Larry F. Hodges
Nick Faust
Gregory Turner
Abstract:
Advances in computer graphics hardware and algorithms, visualization, and
interactive techniques for analysis offer the components for a highly
integrated, efficient real-time 3D Geographic Information System. We have
developed "Virtual GIS," a system with truly immersive capability for
navigating and understanding complex and dynamic terrain-based
databases. The system provides the means for visualizing terrain models
consisting of elevation and imagery data, along with GIS raster layers,
protruding features, buildings, vehicles, and other objects. We have
implemented window-based and virtual reality versions and in both cases
provide a direct manipulation, visual interface for accessing the GIS
data. Unique terrain data structures and algorithms allow rendering of
large, high resolution datasets at interactive rates.
Keywords:
Geographic information systems, terrain, virtual environments, visualization
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