面向数字城市建设的三维建模关键技术研究与应用

三维模型数据以其直观性、客观性和真实性等特性,成为数字城市数据库中的重要组成部分。为了解决三维模型数据获取的精准性和高效性等,在建设数字城市过程中,采取多种技术方式实现三维模型的获取。包括采用传统手工三维建模实现三维精细模型的精准性,采用三维激光扫描技术实现三维模型数据的超精细化,以倾斜摄影测量的半自动建模方式实现快速建模等。本文从技术角度全面总结了在建设数字城市过程中三维模型的具体技术途径及应用方式。三维模型数据应用于数字城市的历史文保、教育、经济等多个领域,为智慧城市的建设奠定了坚实的数据基础。

Key Technologies Research and Application of 3D Modeling for Digital City Construction

3D model data has become an important part in the construction of digital city database with its intuitive, objectivity and accuracy characteristics. In order to solve the accuracy and efficiency requirement of 3D model data acquisition, in the process of building digital city, Beijing takes a variety of ways to achieve 3D model acquisition. Utilizing the traditional manual 3D modeling to achieve the accuracy of 3D fine model, utilizing 3D laser scanning technology to realize the accuracy of 3D hyperfine model, utilizing tilt photogrammetry semi-automatic modeling method to achieve rapid modeling etc. From the technical point of view, this paper is a comprehensive summary of the specific technical approach and application methods for 3D model in the process of Beijing digital city construction. 3D model data applied in many fields of Beijing digital city such as historical and cultural protection, education and economic and so on, which lay a solid data base for the construction of intelligent Beijing.