Please use this identifier to cite or link to this item: https://doi.org/10.3390/ijgi7090355
Title: Achieving Complete and Near-Lossless Conversion from IFC to CityGML
Authors: RUDI MARIA FRANS ANNE STOUFFS 
HELGA TAUSCHER 
Filip Biljecki 
Keywords: building model
BIM
IFC
CityGML
ADE
Conversion
triple graph grammar
Issue Date: 27-Aug-2018
Publisher: MDPI
Citation: RUDI MARIA FRANS ANNE STOUFFS, HELGA TAUSCHER, Filip Biljecki (2018-08-27). Achieving Complete and Near-Lossless Conversion from IFC to CityGML. ISPRS International Journal of Geo-Information 7 (9) : 355. ScholarBank@NUS Repository. https://doi.org/10.3390/ijgi7090355
Rights: Attribution-ShareAlike 4.0 International
Abstract: The Singapore Government has embarked on a project to establish a three-dimensional city model and collaborative data platform for Singapore. The research herein contributes to this endeavour by developing a methodology and algorithms to automate the conversion of Building Information Models (BIM), in the Industry Foundation Classes (IFC) data format, into CityGML building models, capturing both geometric and semantic information as available in the BIM models, and including exterior as well as interior structures. We adopt a Triple Graph Grammar (TGG) to formally relate IFC and CityGML, both semantically and geometrically, and to transform a building information model, expressed as an IFC object graph, into a city model expressed as a CityGML object graph. The work pipeline includes extending the CityGML data model with an Application Domain Extension (ADE), which allows capturing information from IFC that is relevant in the geospatial context but at the same time not supported by CityGML in its standard form. In this paper, we elaborate on the triple graph grammar approach and the motivation and roadmap for the development of the ADE. While a fully complete and lossless conversion may never be achieved, this paper suggests that both a TGG and an ADE are natural choices for supporting the conversion between IFC and CityGML.
Source Title: ISPRS International Journal of Geo-Information
URI: http://scholarbank.nus.edu.sg/handle/10635/146608
ISSN: 22209964
DOI: 10.3390/ijgi7090355
Rights: Attribution-ShareAlike 4.0 International
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