Searched for: author%3A%22Ledoux%252C%255C+H.%22
(1 - 20 of 29)

Pages

List view
Grid view
document
Krijnen, T.F. (author), Noardo, F. (author), Arroyo Ohori, G.A.K. (author), Ledoux, H. (author), Stoter, J.E. (author)
The Industry Foundation Classes are a prevalent open standard to exchange Building Information Models. In such a model, geometric representations are provided for individual building elements along with semantic information, including a significant amount of properties related togeometry and explicit topological relationships. These...
conference paper 2020
document
Ledoux, H. (author), Arroyo Ohori, G.A.K. (author), Peters, R.Y. (author)
The book Computational modelling of terrains presents an overview of algorithms and methodologies to reconstruct, manipulate, and extract information from terrains.<br/><br/>It covers different representations of terrains (eg TINs, rasters, point clouds, contour lines) and presents techniques to handle large datasets.
book 2020
document
Stoter, J.E. (author), Arroyo Ohori, G.A.K. (author), Dukai, B. (author), Labetski, A. (author), Kumar, Kavisha (author), Vitalis, S. (author), Ledoux, H. (author)
Semantically enriched 3D city models have the potential to be powerful hubs of integrated information for computer-based urban spatial analysis. This article presents the state of the art in 3D city modelling in the context of broader developments such as smart cities and digital twins, and outlines six challenges that must be overcome before 3D...
journal article 2020
document
Vitalis, S. (author), Labetski, A. (author), Boersma, F. (author), Dahle, F. (author), Li, X. (author), Arroyo Ohori, G.A.K. (author), Ledoux, H. (author), Stoter, J.E. (author)
As web applications become more popular, 3D city models would greatly benefit from a proper web-based solution to visualise and manage them. CityJSON was introduced as a JSON encoding of the CityGML data model and promises, among several benefits, the ability to be integrated with modern web technologies. In order to provide an implementation...
journal article 2020
document
Ledoux, H. (author), Arroyo Ohori, G.A.K. (author), Kumar, Kavisha (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
document
Kumar, Kavisha (author), Labetski, A. (author), Arroyo Ohori, G.A.K. (author), Ledoux, H. (author), Stoter, J.E. (author)
LandInfra is a relatively new open standard for modelling and representing land and infrastructure features. As it overlaps with other open standards in BIM (IFC) and 3D GIS (CityGML), it has been recognised as a potential candidate to bridge the gap between the two domains. However, the knowledge of this standard in both communities is low, and...
journal article 2019
document
Vitalis, S. (author), Labetski, A. (author), Arroyo Ohori, G.A.K. (author), Ledoux, H. (author), Stoter, J.E. (author)
A 3D city model should be constantly updated with new versions, either to reflect the changes in its real-world counterpart, or to improve and correct parts of the model. However, the current standards for 3D city models do not support versioning, and existing version control systems do not work well with 3D city models. In this paper, we...
journal article 2019
document
Kumar, Kavisha (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
document
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
document
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
document
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
document
Arroyo Ohori, G.A.K. (author), Biljecki, F. (author), Kumar, Kavisha (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
document
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
document
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
document
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
document
Ledoux, H. (author), Arroyo Ohori, G.A.K. (author)
Datasets produced by different countries or organisations are seldom properly aligned and contain several discrepancies (e.g., gaps and overlaps). This problem has been so far almost exclusively tackled by snapping vertices based on a user-defined threshold. However, as we argue in this paper, this leads to invalid geometries, is error-prone,...
journal article 2017
document
Biljecki, F. (author), Arroyo Ohori, G.A.K. (author), Ledoux, H. (author), Peters, R.Y. (author), Stoter, J.E. (author)
The remote estimation of a region’s population has for decades been a key application of geographic information science in demography. Most studies have used 2D data (maps, satellite imagery) to estimate population avoiding field surveys and questionnaires. As the availability of semantic 3D city models is constantly increasing, we investigate...
journal article 2016
document
Arroyo Ohori, G.A.K. (author), Ledoux, H. (author), Stoter, J.E. (author)
An alternative to the traditional approaches to model separately 2D/3D space, time, scale and other parametrisable characteristics in GIS lies in the higher-dimensional modelling of geographic information, in which a chosen set of non-spatial characteristics, e.g. time and scale, are modelled as extra geometric dimensions perpendicular to the...
conference paper 2016
document
Arroyo Ohori, G.A.K. (author), Ledoux, H. (author), Stoter, J.E. (author)
3D city models of the same region at multiple LODs are encumbered by the lack of links between corresponding objects across LODs. In practice, this causes inconsistency during updates and maintenance problems. A radical solution to this problem is to model the LOD of a model as a dimension in the geometric sense, such that a set of connected...
conference paper 2015
document
Arroyo Ohori, G.A.K. (author), Ledoux, H. (author), Biljecki, F. (author), Stoter, J.E. (author)
The various levels of detail (LODs) of a 3D city model are often stored independently, without links between the representations of the same object, causing inconsistencies, as well as update and maintenance problems. One solution to this problem is to model the LOD as an extra geometric dimension perpendicular to the three spatial ones,...
journal article 2015
Searched for: author%3A%22Ledoux%252C%255C+H.%22
(1 - 20 of 29)

Pages

List view
Grid view