References of "Billen, Roland"
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See detailCASTLE4D: An Archaeological Information System Based on 3D Point Clouds
Luczfalvy Jancsó, Andrea ULg; Billen, Roland ULg; Hoffsummer, Patrick ULg et al

in Lerma, José Luis (Ed.) Proceedings of the 8th International Congress on Archaeology, Computer Graphics, Cultural Heritage and Innovation : 'ARQUEOLÓGICA 2.0', Valence 5-7 septembre 2016 (in press)

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See detailEnhancing Spatio-Temporal Identity: States of Existence and Presence
Hallot, Pierre ULg; Billen, Roland ULg

in International Journal of Geo-Information (2016), 5(62),

This work presents a new approach that aims to characterize the spatio-temporal relationships that exist between geographical objects that are absent or non-existent at the moment of analysis. First, we ... [more ▼]

This work presents a new approach that aims to characterize the spatio-temporal relationships that exist between geographical objects that are absent or non-existent at the moment of analysis. First, we would like to propose a formal analysis of the spatio-temporal states of presence and existence of a geographical object. We will then use a combination of these states in order to define a set of life and motion configurations. The model developed then serves as a formal basis for the realization of a series of spatio-temporal queries based on an analysis of patterns in the succession of spatio-temporal states. The entire approach is then demonstrated by using the example of the organization of a scientific conference by defining the spatio-temporal relationships between the conference participants. The research methodology is finally compared with a real dataset taken from a geolocalized social network to show the efficiency of this type of management. [less ▲]

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See detailLe patrimoine en 3D : de l’acquisition aux nuages de points intelligents
Billen, Roland ULg; Poux, Florent ULg; Hallot, Pierre ULg et al

Scientific conference (2016, February 17)

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See detailSmart point cloud: Toward an intelligent documentation of our world
Poux, Florent ULg; Billen, Roland ULg

Conference (2015, December 17)

A point cloud is the output data of many sensors, such as Lidar and laser scanners, or the processing output from photogrammetry and SFM reconstructions. It is a 3D spatial representation of the ... [more ▼]

A point cloud is the output data of many sensors, such as Lidar and laser scanners, or the processing output from photogrammetry and SFM reconstructions. It is a 3D spatial representation of the environment through thousands, million or billions of points, where each single point as a position in space (X, Y, Z) It is safe to say that today, the technology is ready, and enable us to digitize very quickly the world as it stands. This RAW data is rapidly growing with the autonomous vehicles mapping our roads (LiDAR system equip it) and the robotics field using sensors to evolve in the environment. But how do we use this data? Professionnals have been struggling with point cloud, or delivering it to a client because it looks nice, but is there a real added value to visualization only? Can our clients use it at its full potential? [less ▲]

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See detailVirtual Leodium: un exemple de gestion spatio-temporelle de données patrimoniales
Billen, Roland ULg; Van Ruymbeke, Muriel ULg; Carré, Cyril ULg

Scientific conference (2015, November 27)

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See detailLe point sur les techniques de levé
Billen, Roland ULg

Scientific conference (2015, November 27)

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See detailWho are my Visitors and Where do They Come From? An Analysis Based on Foursquare Check-ins and Place-based Semantics.
Hallot, Pierre ULg; Stewart, Kathleen; Billen, Roland ULg

in Eurographics Workshop on Urban Data Modelling and Visualisation 2015 (2015, November 23)

Activity recommendation systems aims at providing relevant information depending on targeted users' groups. For instance in a city, it makes sense to differentiate local residents from tourists. This ... [more ▼]

Activity recommendation systems aims at providing relevant information depending on targeted users' groups. For instance in a city, it makes sense to differentiate local residents from tourists. This research investigates to what extent the anonymized data collected from social networks can be used as a basis for making activity recommendations associated with local residents versus tourists when visiting a public place, such as a museum or gallery. Using rules based on the spatial, temporal and semantics of visited places, we are able to infer if a user is likely to be local or a tourist, based on anonymous sample Foursquare data and place-based semantics retrieved using Google Places API. Using semantics of visited places, it becomes possible to infer additional information about a user based on their movements over space and time. Depending on the kind and frequency of visited places, inferences about the aim of a visit to a location are possible. This analysis could provide information to users in the form of recommendations based on their movements while travelling around an area. This study has been performed using Foursquare check-ins for visitors to the Art Institute of Chicago between March 2010 and January 2011. [less ▲]

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See detailData Product Specification Proposal for Architectural Heritage Documentation with Photogrammetric Techniques: A Case Study in Brazil
Campos, Mariana; Tommaselli, Antonio; Ivanova, Ivana et al

in Remote Sensing (2015), 7(10), 13337-13363

Photogrammetric documentation can provide a sound database for the needs of architectural heritage preservation. However, the major part of photogrammetric documentation production is not used for ... [more ▼]

Photogrammetric documentation can provide a sound database for the needs of architectural heritage preservation. However, the major part of photogrammetric documentation production is not used for subsequent architectural heritage projects, due to lack of knowledge of photogrammetric documentation accuracy. In addition, there are only a few studies with rigorous analysis of the requirements for photogrammetric documentation of architectural heritage. In particular, requirements focusing on the geometry of the models generated by fully digital photogrammetric processes are missing. Considering these needs, this paper presents a procedure for architectural heritage documentation with photogrammetric techniques based on a previous review of existing standards of architectural heritage documentation. The data product specification proposed was elaborated conforming to ISO 19131 recommendations. We present the procedure with two case studies in the context of Brazilian architectural heritage documentation. Quality analysis of the produced models were performed considering ISO 19157 elements, such as positional accuracy, logical consistency and completeness, meeting the requirements. Our results confirm that the proposed requirements for photogrammetric documentation are viable. [less ▲]

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See detailHow education adapts to meet the requirements?
Billen, Roland ULg

Scientific conference (2015, September 17)

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See detailChallenges of Semantic 3D City Models: A Contribution of the COST Research Action TU0801
Billen, Roland ULg; Cutting-Decelle, Anne-Françoise; Métral, Claudine et al

in International Journal of 3-D Information Modeling (2015), 4(2), 68-76

This technical paper is a contribution to the identification of current challenges of semantic 3D city models. They are presented in four parts, namely 3D enriched city models and their connection with ... [more ▼]

This technical paper is a contribution to the identification of current challenges of semantic 3D city models. They are presented in four parts, namely 3D enriched city models and their connection with urban information models and smartcities, urban models integration, urban analyses and data. This work is an output of the COST Action TU0801 “Semantic Enrichment of 3D city models for sustainable urban development”. [less ▲]

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See detailLa 3D en géomatique : des instruments de gestion derrière les images
Billen, Roland ULg

Conference given outside the academic context (2015)

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See detailLes états spatio-temporels d'existence et de présence
Hallot, Pierre ULg; Stewart, Kathleen; Billen, Roland ULg

in Revue Internationale de Géomatique = International Journal of Geomatics and Spatial Analysis (2015), 25(2), 173-196

This paper addresses a new approach to formalize the spatiotemporal relationships between geographical objects that do not exist or that are not present at the time of the analysis. We propose first an ... [more ▼]

This paper addresses a new approach to formalize the spatiotemporal relationships between geographical objects that do not exist or that are not present at the time of the analysis. We propose first an analysis of the spatiotemporal states of existence and presence for a geographical object. Then, we combine the spatiotemporal states to define a comprehensive set of life and motion configuration. The proposed model serves as formal basis to perform spatiotemporal queries by retrieving selected patterns in the life and motion configurations. The research is applied to the organization of a scientific conference, in doing so we are able to define the relationships that exist between an event located in space and time and mobiles objects evolving within the space, i.e. the conference participants. [less ▲]

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See detailTowards an Archaeological Information System: Improving the Core Data Model
Van Ruymbeke, Muriel ULg; Carré, Cyril ULg; Delfosse, Vincent ULg et al

in Giligny, F.; Djindjian, F.; Costa, L. (Eds.) et al CAA 2014 21st century Archaeology : Concepts methods and tools : Proceedings of the 42nd Annual Conference on Computer Applications and Quantitative Methods in Archaeology (2015)

The use of Geographic Information Systems within the field of archaeology has been demonstrated through numerous scientific studies in the past. However, such systems do not usually encompass all the ... [more ▼]

The use of Geographic Information Systems within the field of archaeology has been demonstrated through numerous scientific studies in the past. However, such systems do not usually encompass all the characteristics of the archaeological data. Since 2009, the Geomatics Unit of the University of Liège works on the development of a robust, flexible and dynamic Archaeological Information System. The interdisciplinary research group focuses on the development of a conceptual data model based on the general characteristics of archaeological data namely its spatio-temporal, heterogeneous, multimodal and imperfect character. The following paper exposes latest output and especially the integration of archaeological data ambiguity [less ▲]

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See detailSegmentation semi-automatique pour le traitement de données 3D denses : application au patrimoine architectural
Poux, Florent ULg; Hallot, Pierre ULg; Jonlet, Benoît ULg et al

in XYZ : la Revue de l'Association Française de Topographie (2014), 141(36), 69-75

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See detailANÁLISE DE REQUISITOS PARA AVALIAÇÃO DE QUALIDADE GEOMÉTRICA NO REGISTRO DO PATRIMÔNIO ARQUITETÔNICO COM TÉCNICAS FOTOGRAMÉTRICAS
Campos, Mariana Batista; De Moraes, Marcus Antunes; Tommaselli, Antonio Maria Garcia et al

in Nome, Carlos Alejandro; de Magalhães Cordeiro, Aristóteles Lobo; Rocha, Germana Costa (Eds.) Anais ARQDOC 2014 INFORMAÇÃO E CONHECIMENTO PARA PRESERVAÇÃO (2014, November)

The documentation of the cultural heritage is a concern since 1885, with the first application of photogrammetry techniques by Albrecht Meydenbauer. In 1987, The International Council of Monuments and ... [more ▼]

The documentation of the cultural heritage is a concern since 1885, with the first application of photogrammetry techniques by Albrecht Meydenbauer. In 1987, The International Council of Monuments and sites has recommended the creation of photogrammetry records of monuments and archaeological sites. Since then, the close range photogrammetry has been the most used technique to survey cultural heritage. This technique has become faster and more accessible with the advancement of digital cameras. Despite the recommendations of International Council of Monuments and sites, the advent of new technologies and the importance of a quality evaluation and documentation, there are few studies with a rigorous analysis of the requirements for the cultural heritage documentation, with focus on the geometry of the models generated by digital photogrammetry process. The aim of this work is to propose discussions and analysis of requirements for the evaluation of planimetric quality of photogrammetric projects applied to the cultural heritage documentation. [less ▲]

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See detailLevé topographique 3D à l'aide d'un laserscan : application au patrimoine architectura
Billen, Roland ULg

Conference given outside the academic context (2014)

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See detailSPATIODATA, un modèle de bâtiment non-constructif, collaboratif et multi-usage
Delfosse, Vincent ULg; Boulanger, Christelle ULg; Jeunejean, Aurélie ULg et al

in Actes du 6ème Séminaire de Conception Architecturale Numérique (2014, June 19)

There is an increasing number of mobile applications supporting specific activities related to the indoor building environment. SpatioData is a research project aiming at the development of a ... [more ▼]

There is an increasing number of mobile applications supporting specific activities related to the indoor building environment. SpatioData is a research project aiming at the development of a collaborative platform for the effective sharing of building-related data and supporting a wide range of different activities. This paper discusses the specific data model at the heart of the project. A comparison with the traditional BIM models is given in order to motivate the choices made in this project. [less ▲]

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See detailProjet de recherche appliquée SpatioData : Spécification d’un système participatif pour la réutilisation de données sporadiques sur le bâtiment
Ben Rajeb, Samia ULg; Delfosse, Vincent ULg; Boulanger, Christelle ULg et al

in Proceedings du colloque 01'Design 9 (2014, May 09)

Cet article présente un projet de recherche nommé SpatioData qui a duré trois ans et dont l’objectif visait l’exploitation de nouvelles technologies de l’information et de la communication (TIC) pour ... [more ▼]

Cet article présente un projet de recherche nommé SpatioData qui a duré trois ans et dont l’objectif visait l’exploitation de nouvelles technologies de l’information et de la communication (TIC) pour proposer un outil innovant permettant la réutilisation d’informations liées au bâtiment. Nous montrerons, au travers d’enquêtes et d’interviews, l’importance de faciliter l’accès aux données rattachées à l’historique du bâtiment via un système innovant et intuitif qui permettra à tous les acteurs du secteur de la construction et de la gestion immobilière de trouver et de partager des informations utiles, c’est-à-dire des données spécialisées, contextualisées et spatialisées, en temps réel. Nous listerons des recommandations afin que ces données, qui auraient été perdues ou jetées, puissent être automatiquement mises en relation avec le lieu de l’intervention (géoréférencement) et le type d’intervenant (utilisateur) permettant ainsi de compléter une base de données spatialisées basée sur un modèle de bâtiment spécifique. [less ▲]

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See detailTowards an Archaeological Information System: improving the core data model
Van Ruymbeke, Muriel ULg; Carré, Cyril ULg; Delfosse, Vincent ULg et al

Conference (2014, April 25)

Grounded on archaeological information modeling works undertaken at the Geomatics Unit of the University of Liege, this paper goes a step further in handling time and function imperfection, interpretative ... [more ▼]

Grounded on archaeological information modeling works undertaken at the Geomatics Unit of the University of Liege, this paper goes a step further in handling time and function imperfection, interpretative sequences and people interacting with historical objects. Designed in 2011, the initial model already gathered both geometrical and historical information. It was partially based on the urban data standard City GML mainly for interoperability purposes. Its specificity, the version concept, allowed multiple geometries experiments. That property enabled us to handle geometrical ambiguity and incompleteness. To validate this model, and in a showcase purpose, a first prototype has been realized. One year later this prototype’s model has been improved to manage in a better way all objects’ versions and possible representations. Until now, this model integrates and manages imperfect archaeological data but only partially: the version concept being only dedicated to express geometric ambiguity or imprecision. Henceforth, with the version notion widening, we propose to encompass function and time imperfection as well. It is an important progress because on an archaeological point of view, time and function are quite generally incomplete, uncertain, imprecise or contradictory. Another enhancement must be highlighted: the agent enlistment. Historical characters, on one hand, and contemporaneous people (like authors, archaeologists etc.) on another hand are key elements of archaeological game pieces. Finally, we will describe the way of structuring versions into interpretative sequences. With those improvements, we wish to carry on feeding the scientific debate as much as drafting Archaeological Information Systems. [less ▲]

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See detail3D City Models and urban information: current issues and perspectives
Billen, Roland ULg; Cutting-Decelle, Anne-Françoise; Marina, Ognen et al

Book published by edpsciences (2014)

Considering sustainable development of cities implies investigating cities in a holistic way taking into account many interrelations between various urban or environmental issues. 3D city models are ... [more ▼]

Considering sustainable development of cities implies investigating cities in a holistic way taking into account many interrelations between various urban or environmental issues. 3D city models are increasingly used in different cities and countries for an intended wide range of applications beyond mere visualization. Could these 3D City models be used to integrate urban and environmental knowledge? How could they be improved to fulfill such role? We believe that enriching the semantics of current 3D city models, would extend their functionality and usability; therefore, they could serve as integration platforms of the knowledge related to urban and environmental issues allowing a huge and significant improvement of city sustainable management and development. But which elements need to be added to 3D city models? What are the most efficient ways to realize such improvement / enrichment? How to evaluate the usability of these improved 3D city models? These were the questions tackled by the COST Action TU0801” Semantic enrichment of 3D city models for sustainable urban development”. This book gathers various materials developed all along the four year of the Action and the significant breakthroughs. [less ▲]

Detailed reference viewed: 257 (20 ULg)