| An Incremental LOD Method Based on Grid and Its Application in Distributed Terrain Visualization |
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| 引用本文： | MAZhaoting LIChengming PANMao. An Incremental LOD Method Based on Grid and Its Application in Distributed Terrain Visualization[J]. 地球空间信息科学学报, 2005, 8(2): 128-132. DOI: 10.1007/BF02826852 |
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| 作者姓名： | MAZhaoting LIChengming PANMao |
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| 作者单位： | Ph.DoChineseAcademyofSurveyingandMapping,16BeitaipingRoad,Beijing100039,China. |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 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 preprocessed and it can be visualized with the geometrical Mipmaps to reduce the screen error.
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| 关 键 词： | LOD 地理互联网 数据下载 地形仿真 地图制作 |
| 收稿时间： | 2004-12-12 |
An incremental LOD method based on grid and its application in distributed terrain visualization |
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| Ma Zhaoting Ph.D.,Li Chengming,Pan Mao. An incremental LOD method based on grid and its application in distributed terrain visualization[J]. Geo-Spatial Information Science, 2005, 8(2): 128-132. DOI: 10.1007/BF02826852 |
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| Authors: | Ma Zhaoting Ph.D. Li Chengming Pan Mao |
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| Affiliation: | (1) Chinese Academy of Surveying and Mapping, 16 Beitaiping Road, 100039 Beijing, China |
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| Abstract: | 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 preprocessed and it can be visualized with the geometrical Mipmaps to reduce the screen error. |
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| Keywords: | incremental level of detail grid terrain terrain visualization distributed |
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