Searched for: CityGML
(1 - 20 of 66)

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Pasquinelli, Alice (author), Agugiaro, G. (author), Tagliabue, Lavinia Chiara (author), Scaioni, Marco (author), Guzzetti, Franco (author)
Smart management of urban built environment relies on the availability of data supporting sound policy making and guiding city renovation processes toward more sustainable and performant models. Nevertheless, public managers are unlikely to have comprehensive information on the existing building stock. In addition, tools providing effective...
journal article 2019
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A. Petrovsky, A. (author), Doole, M.M. (author), Ellerbroek, J. (author), Hoekstra, J.M. (author), Tomasello, F. (author)
The objective of this paper is to raise awareness about the significance of collecting and ensuring the quality of the obstacle data required for the safety of air navigation for both manned and unmanned aviation. This information could be of importance to geodetic, CityGML, 3D model and Building Information Management (BIM) community. With the...
conference paper 2018
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Xiong, Qing (author), Zhu, Qing (author), Du, Zhiqiang (author), Zlatanova, S. (author), Zhang, Yeting (author), Zhou, Yan (author), Li, Yun (author)
Intelligent navigation and facility management in complex indoor environments are issues at the forefront of geospatial information science. Indoor spaces with fine geometric and semantic descriptions provide a solid foundation for various indoor applications, but it is difficult to comprehensively extract free multi-floor indoor spaces from...
journal article 2016
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Kalogianni, Eftychia (author), Dimopoulou, Efi (author), Quak, C.W. (author), van Oosterom, P.J.M. (author)
Building Information Models (e.g. BIM, IFC) and virtual 3D city models (e.g. CityGML) are revolutionising the way we manage information about cities. The main focus of such models is on the physical and functional characteristics of urban structures (Aien et al, 2015). On the other hand cadastral data models, (e.g. Land Administration Domain...
conference paper 2016
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Vučić, Nikola (author), van Oosterom, P.J.M. (author), Markovinović, Danko (author)
Utilities, buildings and infrastructure digital representations are very important set of spatial data for quality and sustainable spatial management and development of community in general. Many countries are on the way of the establishment of the 3D cadastre. Existing 2D cadastral systems are able to make gradual transition to 3D cadastre, but...
conference paper 2016
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Biljecki, F. (author), Ledoux, H. (author), Du, X. (author), Stoter, J.E. (author), Soon, Kean Huat (author), Khoo, Victor (author)
To be used as input in most simulation and modelling software, 3D city models should be geometrically and topologically valid, and semantically rich. We investigate in this paper what is the quality of currently available CityGML datasets, i.e. we validate the geometry/topology of the 3D primitives (Solid and MultiSurface), and we validate...
conference paper 2016
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Löwner, Marc-O (author), Gröger, Gerhard (author), Benner, Joachim (author), Biljecki, F. (author), Nagel, Claus (author)
The Open Geospatial Consortium (OGC) CityGML standard offers a Level of Detail (LoD) concept that enables the representation of CityGML features from a very detailed to a less detailed description. Due to a rising application variety, the current LoD concept seems to be too inflexible. Here, we present a multi representation concept (MRC) that...
conference paper 2016
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Diakite, A.A. (author), Zlatanova, S. (author)
For several decades, indoor navigation has been exclusively investigated in a 2D perspective, based on floor plans, projection and other 2D representations of buildings. Nevertheless, 3D representations are closer to our reality and offer a more intuitive description of the space configuration. Thanks to recent advances in 3D modelling, 3D...
journal article 2016
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Alam, M.N. (author), Coors, V (author), Zlatanova, S. (author), van Oosterom, P.J.M. (author)
In this paper, an analysis of the effect of the various types of resolution involved in photovoltaic potential computation is presented. To calculate solar energy incident on a surface, shadow from surrounding buildings has been considered. The incident energy on a surface has been calculated taking the orientation, tilt and position into...
conference paper 2016
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Biljecki, F. (author), Ledoux, H. (author), Stoter, J.E. (author)
The production and dissemination of semantic 3D city models is rapidly increasing benefiting a growing number of use cases. However, their availability in multiple LODs and in the CityGML format is still problematic in practice. This hinders applications and experiments where multi-LOD datasets are required as input, for instance, to determine...
conference paper 2016
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The aim of the CityGML Quality Interoperability Experiment was to define data quality requirements for a general CityGML data specification, to provide recommended implementation guidance for 3D data, and to provide a suite of essential quality checking tools to carry out quality assurance on CityGML data. The data requirements and recommended...
report 2016
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Biljecki, F. (author), Ledoux, H. (author), Stoter, J.E. (author), Vosselman, G (author)
The level of detail (LOD) of a 3D city model indicates the model's grade and usability. However, there exist multiple valid variants of each LOD. As a consequence, the LOD concept is inconclusive as an instruction for the acquisition of 3D city models. For instance, the top surface of an LOD1 block model may be modelled at the eaves of a...
journal article 2016
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Kavisha, K. (author), Ledoux, H. (author), Stoter, J.E. (author)
In addition to buildings, the terrain forms an important part of a 3D city model. Although in GIS terrains are usually represented with 2D grids, TINs are also increasingly being used in practice. One example is 3DTOP10NL, the 3D city model covering the whole of the Netherlands, which stores the relief with a constrained TIN containing more than...
conference paper 2016
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Demir Ozbek, E. (author), Zlatanova, S. (author), Ates Aydar, S. (author), Yomralioglu, T (author)
A conceptual approach is proposed to define 3D geo-information requirement for different types of disasters. This approach includes components such as Disaster Type-Sector-Actor-Process-Activity-Task-Data. According to disaster types processes, activities, tasks, sectors, and responsible and operational actors are derived. Based on the tasks,...
conference paper 2016
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Zlatanova, S. (author), van Oosterom, P.J.M. (author), Lee, J (author), Li, Ki Joune (author), Lemmen, C. H. J. (author)
Guidance and security in large public buildings such as airports, museums and shopping malls requires much more information that traditional 2D methods offer. Therefore 3D semantically-reach models have been actively investigated with the aim to gather knowledge about availability and accessibility of spaces. Spaces can be unavailable to...
conference paper 2016
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Ates Aydar, S. (author), Stoter, J.E. (author), Ledoux, H. (author), Demir Ozbek, E. (author), Yomraliogly, T (author)
This paper presents the generation of the 3D national building geo-data model of Turkey, which is compatible with the international OGC CityGML Encoding Standard. We prepare an ADE named CityGML-TRKBIS.BI that is produced by extending existing thematic modules of CityGML according to TRKBIS needs. All thematic data groups in TRKBIS geo-data...
conference paper 2016
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Rook, Merwin (author), Biljecki, F. (author), Diakite, A.A. (author)
The lack of semantic information in many 3D city models is a considerable limiting factor in their use, as a lot of applications rely on semantics. Such information is not always available, since it is not collected at all times, it might be lost due to data transformation, or its lack may be caused by non-interoperability in data integration...
conference paper 2016
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Donkers, S (author), Ledoux, H. (author), Zhao, J. (author), Stoter, J.E. (author)
Although the international standard CityGML has five levels of detail (LODs), the vast majority of available models are the coarse ones (up to LOD2, i.e. block-shaped buildings with roofs). LOD3 and LOD4 models, which contain architectural details such as balconies, windows and rooms, rarely exist because, unlike coarser LODs, their construction...
journal article 2016
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Zhu, Qing (author), Li, Yun (author), Xiong, Qing (author), Zlatanova, S. (author), Ding, Yulin (author), Zhang, Yeting (author), Zhou, Yan (author)
The Open Geospatial Consortium (OGC) Geography Markup Language (GML) standard provides basic types and a framework for defining geo-informational data models such as CityGML and IndoorGML, which provide standard information models for 3D city modelling and lightweight indoor network navigation. Location information, which is the semantic engine...
journal article 2016
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Biljecki, F. (author), Ledoux, H. (author), Stoter, J.E. (author)
The level of detail (LOD) concept of the OGC standard CityGML 2.0 is intended to differentiate multi-scale representations of semantic 3D city models. The concept is in practice principally used to indicate the geometric detail of a model, primarily of buildings. Despite the popularity and the general acceptance of this categorisation, we argue...
journal article 2016
Searched for: CityGML
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