大规模中心城区精细化建模及可视化研究  

Research on fine modeling and visualization of large-scale central city

作　　者：华安中 孙灏 HUA Anzhong;SUN Hao(Nanjing Institute of Surveying,Mapping&Geotechnical Investigation,Co.,Ltd.,Nanjing 210000,China)

机构地区：[1]南京市测绘勘察研究院股份有限公司,江苏南京210000

出　　处：《测绘通报》2023年第12期121-126,共6页Bulletin of Surveying and Mapping

基　　金：南京市测绘勘察研究院股份有限公司科研项目(2022RD09)。

摘　　要：无人机倾斜实景三维模型在数据缺失时会出现扭曲、变形等现象,模型精细程度不高,同时由于建模机制等原因无法直接用于智慧城市的管理应用。本文以南京市江宁区100 km^(2)中心城区的精细化建模为研究对象,融合应用多源异构数据构建出大场景实景三维模型,基于三维模型完成了各类城市基础设施的单体精细化建模及三维可视化研究。结果表明,构建的精细化模型数学精度高、模型表达细腻、完整性优,基于数字孪生平台搭建的三维可视化系统可承载海量三维模型数据的快速加载及运行,并可为智慧城市的管理提供服务应用。本文为大规模三维精细化城市模型的建设提供了一定的参考价值。The real 3D model of UAV will be distorted and deformed when the data is missing,the precision of the model is not high,and it can not be directly used in the management application of smart cities due to the modeling mechanism and other reasons.This paper takes the fine modeling of the 100 square kilometers central urban area of Jiangning district,Nanjing as the research object,use multi-source heterogeneous data to build a 3D model of large scenes,completed the fine modeling and 3D visualization of various infrastructure based on the 3D model.The results show that the constructed refined model has high mathematical accuracy,exquisite model expression and excellent integrity,the 3D visualization system can carry the rapid loading and operation of massive 3D model data,and can provide services and applications for the management of smart cities,The research provides certain reference value for the construction of large-scale 3D refined city models.

关 键 词：倾斜摄影测量 精细化建模 三维城市模型 三维可视化 

分 类 号：P237[天文地球—摄影测量与遥感]