Title
Digital geoTwin: A CityGML-Based Data Model for the Virtual Replica of the City of Vienna
Author
Lehner, Hubert (Vienna City Administration)
Kordasch, Sara Lena (Vienna City Administration)
Glatz, Charlotte (Vienna City Administration)
Agugiaro, G. (TU Delft Urban Data Science) 
Contributor
Kolbe, Thomas H. (editor)
Donaubauer, Andreas (editor)
Beil, Christof (editor)
Date
2024
Abstract
This paper presents a CityGML-based data model developed for the semantic 3D city model of Vienna, Austria. The data model consists in a profile of the CityGML 2.0 standard and has been extended by means of an Application Domain Extension (ADE) developed by the Department for Surveying and Mapping of the City of Vienna in order to comply with the current and future needs of the municipality. The definition and adoption of such data model are a fundamental part of Vienna’s “Digital geoTwin” project. The core of the strategy is to process the 3D measurement data of the surveying and mapping department from existing as well as new measurement methods directly into a Digital geoTwin—a virtual, semantic 3D replica of all objects in the city—and to derive other geodata products (city map, elevation models, etc.) from this 3D model. Furthermore, the Digital geoTwin should serve as a geometric and semantic basis for a digital twin of the City of Vienna. In order to define the data model for the Digital geoTwin, 3D modelling of all city objects has been carried out in a test area of the city, followed by a mapping of the objects to the CityGML data model. In an iterative development process, conceptual gaps have been identified, analysed and eventually formalized into a UML-based Application Domain Extension. Additionally, the free and open-source CityGML 3D City Database (3DCityDB) has been used for storage after being extended accordingly, and FME workbenches have been created to transform and import the original source data into the 3DCityDB and therefore test the suitability of the developed data model.
Subject
Digital geoTwin
Urban digital twin
Data modelling
3D city model
CityGML ADE
To reference this document use:
http://resolver.tudelft.nl/uuid:f051beba-b13f-42f9-a8d2-4c539fd36039
DOI
https://doi.org/10.1007/978-3-031-43699-4_32
Publisher
Springer, Cham
Embargo date
2024-08-21
ISBN
978-3-031-43698-7
Source
Recent Advances in 3D Geoinformation Science: Proceedings of the 18th 3D GeoInfo Conference
Event
18th 3D Geoinfo Conference, 2023-09-12 → 2023-09-14, Technical University of Munich, Munich, Germany
Series
Lecture Notes in Geoinformation and Cartography, 1863-2246
Bibliographical note
Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.
Part of collection
Institutional Repository
Document type
conference paper
Rights
© 2024 Hubert Lehner, Sara Lena Kordasch, Charlotte Glatz, G. Agugiaro