Abstract
The integration of 3D city models with Building Information Models (BIM), coined as GeoBIM, facilitates improved data support to several applications, e.g., 3D map updates, building permits issuing, detailed city analysis, infrastructure design, context-based building design, to name a few. To solve the integration, several issues need to be tackled and solved, i.e., harmonization of features, interoperability, format conversions, integration of procedures. The GeoBIM benchmark 2019, funded by ISPRS and EuroSDR, evaluated the state of implementation of tools addressing some of those issues. In particular, in the part of the benchmark described in this paper, the application of georeferencing to Industry Foundation Classes (IFC) models and making consistent conversions between 3D city models and BIM are investigated, considering the OGC CityGML and buildingSMART IFC as reference standards. In the benchmark, sample datasets in the two reference standards were provided. External volunteers were asked to describe and test georeferencing procedures for IFC models and conversion tools between CityGML and IFC. From the analysis of the delivered answers and processed datasets, it was possible to notice that while there are tools and procedures available to support georeferencing and data conversion, comprehensive definition of the requirements, clear rules to perform such two tasks, as well as solid technological solutions implementing them, are still lacking in functionalities. Those specific issues can be a sensible starting point for planning the next GeoBIM integration agendas.
Highlights
AACF06kT5yI2qEpuOSs52X2Ta?dl=0) from Industry Foundation Classes (IFC) to CityGML and from CityGML to IFC are analysed 5.1 and 5.2, respectively
One of the closest attempts was performed by IFC2CityGML, which has the advantage of the CityGML v.3 representation paradigm allowing the full inclusion of all the Building Information Models (BIM) concepts within the model without the need to convert them to geo-concepts
The part of the study more directly concerning the integration of 3D city models with BIM was described, including the test of the tools allowing the georeferencing of IFC and conversion procedures in both directions from IFC to CityGML and from CityGML to IFC
Summary
The integration of 3D geoinformation (3D city models) and Building Information Models (BIM), coined as GeoBIM, has become an important topic, addressed by a growing community coming from several fields within academy (geoinformation, geomatics, construction, architecture and urban planning) as well as from organizations outside the academy (government-related institutions, National Mapping and Cadastral Agencies, private companies, etc.).The exchange of information between geospatial (3D city models) and BIM sources enables the reciprocal enrichment of the two kinds of information with advantages for both fields, e.g., automatic updates of 3D city models with high-level-of-detail features, automatic representation of BIM in their context, automated tests of the design, and so on [1,2,3,4,5,6,7,8,9,10,11,12].The GeoBIM and, more generally, the integration challenge is composed of several issues: 1. The harmonization and consistency of data themselves are the first requirement, which have to concretely fit together, with similar or harmonizable features (e.g., accuracy, geometric and semantic representation, amount of detail, georeferencing).2. The integration of 3D geoinformation (3D city models) and Building Information Models (BIM), coined as GeoBIM, has become an important topic, addressed by a growing community coming from several fields within academy (geoinformation, geomatics, construction, architecture and urban planning) as well as from organizations outside the academy (government-related institutions, National Mapping and Cadastral Agencies, private companies, etc.). An interoperable dataset is supposed to remain unchanged when going through several imports and exports by software tools, possibly converting it to their specific native formats and exporting it back. In this regards, to facilitate common understanding and agreed rules, it is desirable to use open standards
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
