Level-of-Detail Management for Real-Time Rendering of Phototextured Terrain
Hodges, Larry F.
Faust, Nick L. (Nickolas Lea)
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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.