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A Terrain Rendering Method using Roughness Map and Bias Map  

Lee, Eun-Seok (Dept. of Computer Science and Information Engineering, Inha University)
Jo, In-Woo (Dept. of Computer Science and Information Engineering, Inha University)
Shin, Byeong-Seok (Dept. of Computer Science and Information Engineering, Inha University)
Publication Information
Journal of the Korea Computer Graphics Society / v.17, no.2, 2011 , pp. 1-9 More about this Journal
Abstract
In recent researches, several LOD techniques are used for real-time visualization of large sized terrain data. However, during mesh simplification, geometry popping may occur in consecutive frames, because of the geometric error. We propose an efficient method for reducing the geometry popping using roughness map and bias map. A roughness map and a bias map are used to move vertices of the terrain mesh to appropriate position where they minimize the geometry errors. A roughness map and a bias map are represented as a texture suitable for GPU processing. Moving vertices using bias map is processed on the GPU, so the high-speed visualization can be possible.
Keywords
terrain rendering; realtime rendering; LOD; displacement mapping;
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