| 网络三维数字城市海量模型优化算法研究 |
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| 引用本文： | 程良勇,李南江.网络三维数字城市海量模型优化算法研究[J].测绘通报,2019,0(7):104-108. |
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| 作者姓名： | 程良勇 李南江 |
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| 作者单位： | 天津市勘察院,天津300191;星际空间(天津)科技发展有限公司,天津300384;星际空间(天津)科技发展有限公司,天津,300384 |
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| 摘 要： | 大规模海量三维模型数据网络传输和终端可视化是面向Web的三维GIS应用关键技术。本文提出将三维模型自适应面删除简化算法和地形模型单面片自动生成算法相结合，实现大批量构建面简化LOD （层次细节模型）模型库自动建库，有效解决了海量高精度、大范围三维模型面向Web的三维GIS应用问题。研究成果在天津市网络三维数字城市规划管理系统项目中成功进行试验，效果显著。
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| 关 键 词： | 面删除 单面片 模型自动简化 LOD 网络三维 |
| 收稿时间： | 2019-04-08 |
| 修稿时间： | 2019-05-20 |
Research on optimizing algorithms for massive model of network three-dimensional digital city |
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| CHENG Liangyong,LI Nanjiang.Research on optimizing algorithms for massive model of network three-dimensional digital city[J].Bulletin of Surveying and Mapping,2019,0(7):104-108. |
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| Authors: | CHENG Liangyong LI Nanjiang |
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| Institution: | 1. Tianjin Institute of Geotechnical Investigation and Surveying, Tianjin 300191, China;2. Tianjin StarGIS Information Engineering Co., Ltd., Tianjin 300384, China |
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| Abstract: | Large-scale massive 3D model data network transmission and terminal visualization are the key technologies of web-oriented 3D GIS application. This paper proposes a combination of 3D model adaptive surface deletion simplification algorithm and terrain model one-sided automatic generation algorithm to realize large-scale simplified LOD (level of detail model) model library automatic building, effectively solving massive high-precision, large-scale 3D model library. The application of the model to web-oriented 3D GIS has been successfully experimented in Tianjin network 3D digital urban planning management system project, and the results are remarkable. |
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| Keywords: | face deletion single piece automatic model of simplification LOD 3D network |
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