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Extracting 3D indoor maps with any shape accurately using building information modeling data / Qi Qiu in ISPRS International journal of geo-information, vol 10 n° 10 (October 2021)  

Public [article]  inISPRS International journal of geo-information > vol 10 n° 10 (October 2021) . - n° 700 Titre : Extracting 3D indoor maps with any shape accurately using building information modeling data Type de document : Article/Communication Auteurs : Qi Qiu, Auteur ; Mingjun Wang, Auteur ; Qingsheng Xie, Auteur ; et al., Auteur Année de publication : 2021 Article en page(s) : n° 700 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique [Termes IGN] carroyage [Termes IGN] carte d'intérieur [Termes IGN] carte en 3D [Termes IGN] conception assistée par ordinateur [Termes IGN] détection de contours [Termes IGN] grille [Termes IGN] modélisation 3D du bâti BIM [Termes IGN] service fondé sur la position Résumé : (auteur) Indoor maps lay the foundation for most indoor location-based services (LBS). Building Information Modeling (BIM) data contains multiple dimensional computer-aided design information. Some studies have utilized BIM data to automatically extract 3D indoor maps. A complete 3D indoor map consists of both floor-level maps and cross-floor paths. Currently, the floor-level indoor maps are mainly either grid-based maps or topological maps, and the cross-floor path generation schemes are not adaptive to building elements with irregular 3D shapes. To address these issues, this study proposes a novel scheme to extract an accurate 3D indoor map with any shape using BIM data. Firstly, this study extracts grid-based maps from BIM data and generates the topological maps directly through the grid-based maps using image thinning. A novel hybrid indoor map, termed Grid-Topological map, is then formed by the grid-based maps and topological maps jointly. Secondly, this study obtains the cross-floor paths from cross-floor building elements by a four-step process, namely X-Z projection, boundary extraction, X-Z topological path generation, and path-BIM intersection. Finally, experiments on eight typical types of cross-floor building elements and three multi-floor real-world buildings were conducted to prove the effectiveness of the proposed scheme, the average accuracy rates of the evaluated paths are higher than 88%. This study will advance the 3D indoor maps generation and inspire the application of indoor maps in indoor LBS, indoor robots, and 3D geographic information systems. Numéro de notice : A2021-778 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.3390/ijgi10100700 Date de publication en ligne : 14/10/2021 En ligne : https://doi.org/10.3390/ijgi10100700 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=98842 [article]

GIScience integrated with computer vision for the examination of old engravings and drawings / Motti Zohar in International journal of geographical information science IJGIS, vol 35 n° 9 (September 2021)  

Public [article]  inInternational journal of geographical information science IJGIS > vol 35 n° 9 (September 2021) . - pp 1703 - 1724 Titre : GIScience integrated with computer vision for the examination of old engravings and drawings Type de document : Article/Communication Auteurs : Motti Zohar, Auteur ; Ilan Shimshoni, Auteur Année de publication : 2021 Article en page(s) : pp 1703 - 1724 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique [Termes IGN] carte en 3D [Termes IGN] carte profonde [Termes IGN] dessin [Termes IGN] extraction de données [Termes IGN] Israël [Termes IGN] Jérusalem [Termes IGN] patrimoine culturel [Termes IGN] paysage [Termes IGN] Ransac (algorithme) [Termes IGN] système d'information géographique [Termes IGN] vision par ordinateur Résumé : (auteur) Landscape reconstructions and deep maps are two major approaches in cultural heritage studies. In general, they require the use of historical visual sources such as maps, graphic artworks, and photographs presenting areal scenes, from which one can extract spatial information. However, photographs, the most accurate and reliable source for scenery reconstruction, are available only from the second half of the 19th century onward. Thus, for earlier periods one can rely only on old artworks. Nevertheless, the accuracy and inclusiveness of old artworks are often questionable and must be verified carefully. In this paper, we use GIScience methods with computer-vision capabilities to interrogate old engravings and drawings as well as to develop a new approach for extracting spatial information from these scenic artworks. We have inspected four old depictions of Jerusalem and Tiberias (Israel) created between the 17th and 19th centuries. Using visibility analysis and a RANSAC algorithm we identified the locations of the artists when they drew the artworks and evaluated the accuracy of their final products. Finally, we re-projected 3D map digitized features onto the drawing canvases, thus embedding features not originally drawn. These were then identified, enabling potential extraction of the spatial information they may reflect. Numéro de notice : A2021-592 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/13658816.2021.1874957 Date de publication en ligne : 25/02/2021 En ligne : https://doi.org/10.1080/13658816.2021.1874957 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=98213 [article]

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The design and testing of 3DmoveR: an experimental tool for usability studies of interactive 3D maps / Lukas Herman in Cartographic perspectives, n° 90 ([01/10/2018])  

Public [article]  inCartographic perspectives > n° 90 [01/10/2018] . - pp 31 - 63 Titre : The design and testing of 3DmoveR: an experimental tool for usability studies of interactive 3D maps Type de document : Article/Communication Auteurs : Lukas Herman, Auteur ; Tomas Řezník, Auteur ; Zdenek Stachoň, Auteur ; Jan Russnák, Auteur Année de publication : 2018 Article en page(s) : pp 31 - 63 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] bibliothèque logicielle [Termes IGN] carte en 3D [Termes IGN] convivialité [Termes IGN] Javascript (langage de script) [Termes IGN] PHP [Termes IGN] scène 3D [Termes IGN] test de performance [Vedettes matières IGN] Géovisualisation Mots-clés libres : 3D Movement and Interaction Recorder (3DmoveR) Résumé : (auteur) Various widely available applications such as Google Earth have made interactive 3D visualizations of spatial data popular. While several studies have focused on how users perform when interacting with these with 3D visualizations, it has not been common to record their virtual movements in 3D environments or interactions with 3D maps. We therefore created and tested a new web-based research tool: a 3D Movement and Interaction Recorder (3DmoveR). Its design incorporates findings from the latest 3D visualization research, and is built upon an iterative requirements analysis. It is implemented using open web technologies such as PHP, JavaScript, and the X3DOM library. The main goal of the tool is to record camera position and orientation during a user’s movement within a virtual 3D scene, together with other aspects of their interaction. After building the tool, we performed an experiment to demonstrate its capabilities. This experiment revealed differences between laypersons and experts (cartographers) when working with interactive 3D maps. For example, experts achieved higher numbers of correct answers in some tasks, had shorter response times, followed shorter virtual trajectories, and moved through the environment more smoothly. Interaction-based clustering as well as other ways of visualizing and qualitatively analyzing user interaction were explored. Numéro de notice : A2018-610 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.14714/CP90.1411 Date de publication en ligne : 09/09/2018 En ligne : https://doi.org/10.14714/CP90.1411 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=92837 [article]

Helsinki – A role model for other cities / Aidan Mercer in GEO: Geoconnexion international, vol 16 n° 10 (October 2017)

Public [article]  inGEO: Geoconnexion international > vol 16 n° 10 (October 2017) . - pp 32 - 36 Titre : Helsinki – A role model for other cities Type de document : Article/Communication Auteurs : Aidan Mercer, Auteur Année de publication : 2017 Article en page(s) : pp 32 - 36 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications photogrammétriques [Termes IGN] carte en 3D [Termes IGN] réalité augmentée [Termes IGN] ville intelligente Résumé : (éditeur) Helsinki’s use of 3D visualisation technologies has turned it into a smart city – and helped to engage citizens. Aidan Mercer reports. Numéro de notice : A2017-687 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=87389 [article]

Le FOSS4G Europe / Vincent Habchi in Géomatique expert, n° 118 (septembre - octobre 2017)

Public [article]  inGéomatique expert > n° 118 (septembre - octobre 2017) . - pp 6 - 9 Titre : Le FOSS4G Europe Type de document : Article/Communication Auteurs : Vincent Habchi, Auteur Année de publication : 2017 Article en page(s) : pp 6 - 9 Note générale : bibliographie Langues : Français (fre) Descripteur : [Vedettes matières IGN] Informatique [Termes IGN] carte en 3D [Termes IGN] géomatique [Termes IGN] Geospatial data abstraction library [Termes IGN] GRASS [Termes IGN] logiciel libre [Termes IGN] Orfeo Tool Box [Termes IGN] système d'information géographique Résumé : (auteur) Le FOSS4G Europe s'est tenu mi-juillet à l'ENSG. Que faut-il retenir de ces trois jours de conférence-échange entre acteurs de l'Open Source européen ? Numéro de notice : A2017-584 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE/INFORMATIQUE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=86721 [article]

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Localisation à base d’amers visuels : Cartographie et mise en correspondance de marquages au sol et intégration dans LBA / Bahman Soheilian (2016)    

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Analysing landmarks in nature and elements of geospatial images to support wayfinding / Pyry Kettunen (2014)  

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Cartography from pole to pole [ICC 2013] / Manfred F. Buchroithner (2013)  

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3-D mapping of a multi-layered Mediterranean forest using ALS data / António Ferraz in Remote sensing of environment, vol 121 (June 2012)  

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Three-dimensional [3D] map design / Menno-Jan Kraak in Cartographic journal (the), vol 30 n° 2 (December 1993)  

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