Searched for: author:"Ledoux, H."
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Kavisha, K. (author), Labetski, A. (author), Arroyo Ohori, G.A.K. (author), Ledoux, H. (author), Stoter, J.E. (author)
The relatively new Open Geospatial Consortium (OGC) standard LandInfra documents in its data model land and civil engineering infrastructure features. It has a Geography Markup Language (GML) implementation, OGC InfraGML, which has essentially no software support and is rarely used in practice. In order to share the benefits of LandInfra (and...
journal article 2019
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Ledoux, H. (author), Arroyo Ohori, G.A.K. (author), Kavisha, K. (author), Dukai, B. (author), Labetski, A. (author), Vitalis, S. (author)
The international standard CityGML is both a data model and an exchange format to store digital 3D models of cities. While the data model is used by several cities, companies, and governments, in this paper we argue that its XML-based exchange format has several drawbacks. These drawbacks mean that it is difficult for developers to implement...
journal article 2019
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Labetski, A. (author), Kavisha, K. (author), Ledoux, H. (author), Stoter, J.E. (author)
While there exist international standards for geospatial metadata (ISO 19115), these are rarely used in practice for 3D datasets, and one of the OGC standards for 3D city models, CityGML, does not offer a mechanism to store metadata in a structured way. Having metadata in CityGML files, which are in practice often very large and complex, would...
journal article 2018
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Kavisha, K. (author), Ledoux, H. (author), Stoter, J.E. (author)
In this paper, we review state of the art 3D visualization technologies for floods and we focus on the Netherlands since it has a long history of dealing with floods and developing information technology solutions to prevent and predict them. We discuss the most recent advances in using 3D city models for modelling floods and discuss future...
conference paper 2018
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Labetski, A. (author), van Gerwen, Stefan (author), Tamminga, G.F. (author), Ledoux, H. (author), Stoter, J.E. (author)
CityGML, an OGC standard, is an open data model for virtual 3D city models and includes buildings, roads, terrain, water bodies, etc. While many modules are well-developed (eg buildings, bridges, tunnels), the transportation model is, based on our consultations with various government agencies and municipalities, not sufficient for most...
conference paper 2018
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Arroyo Ohori, G.A.K. (author), Diakite, A.A. (author), Krijnen, Thomas (author), Ledoux, H. (author), Stoter, J.E. (author)
It is widely acknowledged that the integration of BIM and GIS data is a crucial step forward for future 3D city modelling, but most of the research conducted so far has covered only the high-level and semantic aspects of GIS-BIM integration. This paper presents the results of the GeoBIM project, which tackled three integration problems focussing...
journal article 2018
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Ledoux, H. (author)
The validity of 3D primitives in 3D GIS datasets is often a prerequisite for using them in simulation and decision-making software, e.g. visibility analysis, noise pollution assessment, and energy estimation. However, while agreed definitions exist (in the international standard ISO19107), most software vendors ignore them and implement simpler...
journal article 2018
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Kavisha, K. (author), Ledoux, H. (author), Stoter, J.E. (author)
Terrains form an important part of 3D city models. GIS practitioners often model terrains with 2D grids. However, TINs (Triangulated Irregular networks) are also increasingly used in practice. One such example is the 3D city model of the Netherlands (3DTOP10NL), which covers the whole country as one massive triangulation with more than one...
journal article 2018
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Arroyo Ohori, G.A.K. (author), Biljecki, F. (author), Kavisha, K. (author), Ledoux, H. (author), Stoter, J.E. (author)
CityGML is the most important international standard used to model cities and landscapes in 3D with extensive semantics. Compared to BIM standards such as IFC, CityGML models are usually less detailed but they cover a much greater spatial extent. They are also available in any of five standardized levels of detail. CityGML serves as an exchange...
book chapter 2018
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Diakite, A.A. (author), Krijnen, Thomas (author), Ledoux, H. (author), Arroyo Ohori, G.A.K. (author), Penninga, Friso (author), Stoter, J.E. (author)
GIS-data worden gebruikt om de leefomgeving te modelleren ten behoeve van<br/>ruimtelijke analyses en BIM-data voor het ontwerp, het bouwen en het beheer<br/>van bouwwerken. De grens tussen GIS en BIM vervaagt echter en er is een<br/>groeiende vraag om beide typen data te integreren.
journal article 2018
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Zhao, Junqiao (author), Ledoux, H. (author), Stoter, J.E. (author), Feng, Tiantian (author)
The Level-of-Detail (LOD) 2 building models defined in CityGML are used widely in three-dimensional (3D) city applications. Many of these applications demand valid solid-based geometry (closed 2-manifold), which is crucial for analytical and computational purposes. However, this condition is often violated in practice because of the way LOD2...
journal article 2018
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Dukai, B. (author), Ledoux, H. (author), Stoter, J.E. (author)
Het representeren van gebouwen met dakvormen (ook wel LoD2 genoemd) is populair bij 3D-modellering van de leefomgeving, omdat dit een realistische beleving geeft. Maar voor veel 3D-data toepassingen zijn simpele blokmodellen van gebouwen meer geschikt. Deze zogenaamde LoD1-modellen kunnen relatief eenvoudig worden gegenereerd vanuit data die...
journal article 2018
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Stoter, J.E. (author), Arroyo Ohori, G.A.K. (author), Ledoux, H. (author)
The boundary between geo and BIM is getting fuzzy, but working with IFC models from practice shows that converting BIM data in a format useful in GIS and vice versa is still far from straightforward.
journal article 2018
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Arroyo Ohori, G.A.K. (author), Ledoux, H. (author), Stoter, J.E. (author)
Objects of more than three dimensions can be used to model geographic phenomena that occur in space, time and scale. For instance, a single 4D object can be used to represent the changes in a 3D object's shape across time or all its optimal representations at various levels of detail. In this paper, we look at how such higher-dimensional...
journal article 2017
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Biljecki, F. (author), Ledoux, H. (author), Stoter, J.E. (author)
Elevation datasets (e.g. point clouds) are an essential but often unavailable ingredient for the construction of 3D city models. We investigate in this paper to what extent can 3D city models be generated solely from 2D data without elevation measurements. We show that it is possible to predict the height of buildings from 2D data (their...
journal article 2017
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Biljecki, F. (author), Heuvelink, GBM (author), Ledoux, H. (author), Stoter, J.E. (author)
There has been a great deal of research about errors in geographic information and how they affect spatial analyses. A typical GIS process introduces various types of errors at different stages, and such errors usually propagate into errors in the result of a spatial analysis. However, most studies consider only a single error type thus...
journal article 2017
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Arroyo Ohori, G.A.K. (author), Ledoux, H. (author), Stoter, J.E. (author)
The concept of spacetime has long been used in physics to refer to models that integrate 3D space and time as a single 4D continuum. We argue in this paper that it is also advantageous to use this concept in a practical geographic context by realizing a true 4D model, where time is modeled and implemented as a dimension in the same manner as the...
journal article 2017
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Stoter, J.E. (author), Ploeger, H.D. (author), Roes, Ruben (author), van der Riet, Els (author), Biljecki, F. (author), Ledoux, H. (author), Kok, Dirco (author), Kim, S. (author)
This article reports on the first 3D cadastral registration in The Netherlands, accomplished in March 2016. The solution was sought within the current cadastral, organisational, and technical frameworks to obtain a deeper knowledge on the optimal way of implementing 3D registration, while avoiding discussions between experts from different...
journal article 2017
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Kavisha, K. (author), Ledoux, H. (author), Commandeur, T.J.F. (author), Stoter, J.E. (author)
Road traffic and industrial noise has become a major source of discomfort and annoyance among the residents in urban areas. More than 44&amp;thinsp;% of the EU population is regularly exposed to road traffic noise levels over 55 dB, which is currently the maximum accepted value prescribed by the Environmental Noise Directive for road traffic...
conference paper 2017
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Arroyo Ohori, G.A.K. (author), Biljecki, F. (author), Diakite, A.A. (author), Krijnen, Thomas (author), Ledoux, H. (author), Stoter, J.E. (author)
Geographic information and building information modelling both model buildings and infrastructure, but the way in which they are modelled is usually complimentary and BIM-GIS integration is widely considered as a way forward for both domains. For one, more detailed BIM data can feed more general GIS data and GIS data can provide the context...
conference paper 2017
Searched for: author:"Ledoux, H."
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