将三维地理空间数据转换为CityGML -以布拉格为例

IF 0.3 Q4 REMOTE SENSING
K. Janecka
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引用次数: 10

摘要

三维地理信息对城市及其相关政策的制定具有重要意义。因此,这些城市正在探索3D虚拟城市模型的可能性,以提高决策效率。为了使这些数据的经济效益最大化,城市可以提供它们的3D地理空间数据供进一步使用,这样就可以创建新的应用程序。本文定义了一种将布拉格免费提供的三维地理空间数据从专有数据格式转换为开放数据模型的方法。将建筑物、桥梁和数字地形模型的三维地理空间数据从三维形状文件转换为CityGML。这是一种独立于应用程序的信息模型和交换格式。这将允许不同用户群体更广泛地使用3D城市模型。将生成的CityGML文件通过适当的基于数据库CityGML的方案导入到空间数据库中。它可以更有效地管理和查询CityGML数据。为了使更广泛的受众能够探索三维城市模型,还探索了网络环境下的可视化。本文还介绍了如何将来自外部数据源的属性连接到web环境中的3D对象。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Transformation of 3D geospatial data into CityGML – a case of Prague
Abstract The 3D geoinformation is becoming important for cities and their policies. The cities are therefore exploring the possibilities of 3D virtual city models for more efficient decision making. To maximize the economic benefit of such data, the cities can provide their 3D geospatial data for further usage, and so, new applications can be created. The paper defines a way how the freely available 3D geospatial data of Prague can be transformed from the proprietary data format into the open data model. The 3D geospatial data about the buildings, bridges and digital terrain model were transformed from the 3D shapefile into the CityGML. This is an application independent information model and exchange format. This will allow for the wider use of the 3D city model by different groups of users. The generated CityGML files were further imported into the spatial database with appropriate database CityGML-based scheme. It enables more efficient management and querying of CityGML data. To enable the wider audience to explore the 3D city model, the visualization in the web environment was also explored. The paper also presents the way how the attributes from the external data sources can be connected to the 3D objects in the web environment.
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28.60%
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12 weeks
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