Key technology and application of integrated management of urban pan-spatial 3D model data
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摘要:
随着城市三维地质信息系统及其应用的快速发展，对地学数据的可视化表达精度的需求变得越来越高，但地质调查数据常具有多源、多维、海量、多专题、多尺度和多时态等特征，而三维数据存储、组织与管理己成为制约其发展的重要因素。因此如何高效管理并有效利用这些复杂且海量的地质数据去解决各种复杂的地质问题服务社会，成为了城市地质信息科学领域研究的热门方向。基于武汉市多要素城市地质调查全空间一张图的构建过程，从多源三维模型一体化融合管理与分布式存储、轻量级全空间三维模型构建、多源异构海量三维数据快速渲染和浏览器端三维模型分析及专业应用4个方面系统地探索了城市地质调查全空间一张图系统建设过程中的关键技术，并进行了应用实践。研究结果实现了城市级大规模高精度三维地质模型的高效集成，提高了多要素城市地质调查成果可视化的表达效果，为三维地质模型的应用奠定了坚实的基础。
Abstract:With the rapid development of urban 3D geological information system and its application, the demand for visualization accuracy of geological data is increasing. Geological survey data are often multi-source, multi-dimensional, massive, multi-topic, multi-scale and multi-temporal, which makes it difficult to store, organize and manage 3D data.Therefore, it is of great interest for scholars in the field of urban geological information science to efficiently manage and effectively utilize the complex and massive geological data to solve various complex geological problems and serve the society. Based on the construction process of a full-space map of the multi-factor urban geological survey of Wuhan, this paper systematically explores the key technologies in the construction of the One Map system for urban geological survey and puts them into practice. Four aspects are explicitly considered, namely, distributed storage and fusion management of a multi-source 3D models, lightweight full-space 3D model construction, fast rendering of multi-source heterogeneous massive 3D data, and application of 3D model analysis in browser, and an example is put forward. It realizes the efficient integration of large-scale and high-precision 3D geological models at the city level, improves the visualization expression effect of multi-factor urban geological survey results, and lays a solid foundation for the application of 3D geological models.
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表 1 部署平台的软硬件条件
Table 1. Sorfware and hardware conditions of the deployment platform
区域 系统名称/用途 硬件参数 操作系统 应用云 应用服务器 4核，16G，磁盘大小：1T Windows Server 2008 服务云 IGServer服务器+IGServer-X服务器 8核，32G，磁盘大小：2T Windows Server 2008(或以上) 数据云 DataStore数据服务 单节点16核，32G，磁盘大小：2T Centos 7 
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