GVU Technical Report Number:
GIT-GVU-95-06
Title:
Level-of-detail Management for Real-Time Rendering of Phototextured Terrain
Authors:
Peter LIndstrom
David Holler
Larry F. Hodges
William Ribarsky
Nick Faust
Gregory Turner
Abstract:
We present four techniques for real-time level-of-detail reduction of digital
terrain data without loss of visual image quality or detail. Techniques for
reducing polygon count based on distance and terrain roughness provided two-
orders-of-magnitude reduction in the number of polygons rendered for our
sample data: an eight kilometer by eight kilometer data set with four meter
resolution. Techniques for reducing texture data based on distance and
orientation of polygons resulted in a one-order-of-magnitude reduction in the
number of bytes of texture memory for the same data set.
Keywords:
Terrain, phototexture, geographic information systems, distributed
information systems, rendering, level-of-detail management
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