OGC CityGML is an open standard for 3D city models intended to foster interoperability and support various applications. However, through our practical experience and discussions with practitioners, we have noticed several problems related to the implementation of the standard and the use of standardized data. Nevertheless, a systematic investigation of these issues has never been carried out, and there is thus insufficient evidence for tackling the problems. The GeoBIM benchmark project is aimed at finding such evidence by involving external volunteers, reporting on various aspects of the behavior of tools (geometry, semantics, georeferencing, functionalities), analyzed and described in this article. This study explicitly pointed out the critical points embedded in the format as an evidence base for future development. A companion article (Part I) describes the results of the benchmark related to IFC, the counterpart of CityGML within building information modeling.

中文翻译：

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CityGML软件支持的参考研究：GeoBIM基准测试2019 —第二部分

OGC CityGML是3D城市模型的开放标准，旨在促进互操作性并支持各种应用程序。但是，通过我们的实践经验和与从业人员的讨论，我们注意到了与标准实施和标准化数据使用相关的若干问题。然而，从未对这些问题进行系统的调查，因此没有足够的证据来解决这些问题。GeoBIM基准项目旨在通过让外部志愿者参与，报告工具行为的各个方面（几何，语义，地理配准，功能），在本文中进行分析和描述，来找到此类证据。这项研究明确指出了嵌入在格式中的关键点，作为未来发展的证据基础。