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Simplifying and Exchanging 3D Utility Network Objects Using City Models

机译：使用城市模型简化和交换3D实用程序网络对象

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City models are extended recently to include utilities infrastructure e.g. CityGML/Utility Network ADE. The 3D geometry representation in these models is utilizing the concept of boundary representation (B-Rep), where planar faces and straight edges enclose the boundary. In case of utilities network, B-Rep would result in an extensive amount of storage space. This paper presents a new data type compatible to the swept representation, as well as the required algorithm to extract the needed information from the 3D utility network object represented as (B-Rep), i.e. centerlines as well as their profile information, and store them in the new custom data type. Another algorithm allows the generation of B-rep for visualization purposes. To show the effectiveness of the presented approach we accomplished the export of utility network into CityGML UtiltiyNetworkADE. Several 3D network object types (e.g. pipes, fitting) are exported to the new data type. The tests show the feasibility of the data type to reduce storage space, to create B-rep for visualization as well as to extract a graph for analysis. The new data types as well as the mentioned algorithms are implemented in Spatial-DBMS.
机译：最近延长了城市模型，以包括公用事业基础设施。 CityGML / UTITY网络ADE。这些模型中的3D几何表示正在利用边界表示的概念（B-rep），其中平面面和直边包围边界。在公用事业网络的情况下，B-rep会导致广泛的存储空间。本文介绍了兼容扫描表示的新数据类型，以及所需的算法，以从表示为（b-rep）的3D实用程序网络对象中所需的信息，即中心列表以及其配置文件信息，并存储它们在新的自定义数据类型中。另一种算法允许生成B-REP以进行可视化目的。为了表明所提出的方法的有效性，我们完成了Utility Network的导出到CityGML UtiltiyNetWorkade。几种3D网络对象类型（例如管道，拟合）将导出到新数据类型。该测试显示数据类型减少存储空间的可行性，以创建B-REP进行可视化，并提取图表进行分析。新数据类型以及所提到的算法在Spatial-DBMS中实现。

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