测绘通报 ›› 2019, Vol. 0 ›› Issue (7): 104-108.doi: 10.13474/j.cnki.11-2246.2019.0229

• 技术交流 • 上一篇    下一篇

网络三维数字城市海量模型优化算法研究

程良勇1,2, 李南江2   

  1. 1. 天津市勘察院, 天津 300191;
    2. 星际空间(天津)科技发展有限公司, 天津 300384
  • 收稿日期:2019-04-08 修回日期:2019-05-20 出版日期:2019-07-25 发布日期:2019-07-31
  • 作者简介:程良勇(1981-),男,硕士,高级工程师,从事三维地理信息应用研究工作。E-mail:chengliangyong@stargis.cn

Research on optimizing algorithms for massive model of network three-dimensional digital city

CHENG Liangyong1,2, LI Nanjiang2   

  1. 1. Tianjin Institute of Geotechnical Investigation and Surveying, Tianjin 300191, China;
    2. Tianjin StarGIS Information Engineering Co., Ltd., Tianjin 300384, China
  • Received:2019-04-08 Revised:2019-05-20 Online:2019-07-25 Published:2019-07-31

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。

关键词: 面删除, 单面片, 模型自动简化, LOD, 网络三维

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.

Key words: face deletion, single piece, automatic model of simplification, LOD, 3D network

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