YIN Changlin, ZHAN Qingming, XU Wenqiang, ZHANG Honghui. Simplification Technology for Real-time Rendering of Large-scale 3D Terrain[J]. Geomatics and Information Science of Wuhan University, 2012, 37(5): 555-559.
Citation:
YIN Changlin, ZHAN Qingming, XU Wenqiang, ZHANG Honghui. Simplification Technology for Real-time Rendering of Large-scale 3D Terrain[J]. Geomatics and Information Science of Wuhan University, 2012, 37(5): 555-559.
YIN Changlin, ZHAN Qingming, XU Wenqiang, ZHANG Honghui. Simplification Technology for Real-time Rendering of Large-scale 3D Terrain[J]. Geomatics and Information Science of Wuhan University, 2012, 37(5): 555-559.
Citation:
YIN Changlin, ZHAN Qingming, XU Wenqiang, ZHANG Honghui. Simplification Technology for Real-time Rendering of Large-scale 3D Terrain[J]. Geomatics and Information Science of Wuhan University, 2012, 37(5): 555-559.
1 School of Urban Design,Wuhan University,8 South Donghu Road,Wuhan 430072,China;2Planning Information Service Center of Changsha,218 Yuelu Road,Changsha 410013,China
Considering topographic features and view-dependent characteristic,a simple evaluation function for quad-tree subdivision was used to generate dynamic multi-resolution terrain model in real time.While 3D scene roaming,a mechanism of multi-level buffering was used for data scheduling and rendering under the condition of quickly viewpoint transformation.At the same time,an adaptive LOD scheduling which comprehensive consideration of frame rate and subdivision evaluation function was proposed.A multi-level texture mapping method consistent with the terrain scheduling was used to render the image texture.At last,the algorithms were achieved by programming,and the large-scale 3D terrain visualization was realized based on the simplify methods.
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