An Incremental LOD Method Based on Grid and Its Application in Distributed Terrain Visualization

被引:0
|
作者
Ma Zhaoting [1 ]
Li Chengming [1 ]
Pan Mao [1 ]
机构
[1] Chinese Acad Surveying & Mapping, 16 Beiraiping Rd, Beijing 100039, Peoples R China
关键词
incremental; level of detail; grid terrain; terrain visualization; distributed;
D O I
10.1007/BF02826852
中图分类号
TP7 [遥感技术];
学科分类号
081102 ; 0816 ; 081602 ; 083002 ; 1404 ;
摘要
Incremental LOD can be transmitted on the network as a stream, then users on the clients can easily catch the skeleton of terrain without downloading all the data from the server. Detailed information in a local part can be added gradually when users zoom it in without redundant data transmission in this procedure. To do this, an incremental LOD method is put forward according to the regular arrangement of grid. This method applies arbitrary sized grid terrains and is not restricted to square ones with a side measuring 2(k) + 1 samples. Maximum height errors are recorded when the LOD is preproeessed and it can be visualized with the geometrical Mipmaps to reduce the screen error.
引用
收藏
页码:128 / 132
页数:5
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