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Point clouds for use in Building Information Models (BIM) / Robert Klinc in Geodetski vestnik, vol 65 n° 4 (December 2021 - February 2022)  

Public [article]  inGeodetski vestnik > vol 65 n° 4 (December 2021 - February 2022) . - pp 594 - 613 Titre : Point clouds for use in Building Information Models (BIM) Type de document : Article/Communication Auteurs : Robert Klinc, Auteur ; Uroš Jotanović, Auteur ; Klemen Kregar, Auteur Année de publication : 2021 Article en page(s) : pp 594 - 613 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Lasergrammétrie [Termes IGN] canalisation [Termes IGN] données lidar [Termes IGN] données localisées 3D [Termes IGN] extraction automatique [Termes IGN] modélisation 3D du bâti BIM [Termes IGN] mur [Termes IGN] qualité du modèle [Termes IGN] Revit [Termes IGN] semis de points [Termes IGN] traitement de semis de points Résumé : (Auteur) The use of point clouds in extracting data for building information modelling (BIM) has become common recently. Managers of older buildings are working to centralise information. Documentation about mechanical installations, plumbing, electricity, and previous interventions is often stored on scattered media, frequently still on paper. In the transformation of the material world into the digital world, the point cloud is the starting point, containing information about the material world obtained by various means such as photogrammetry, terrestrial or aerial laser scanning. Manual BIM modelling for management, maintenance and future use is a time-consuming and error-prone process. We would like to automate this process and avoid these errors. Recently, there have been developed an increasing number of stand-alone programmes and add-ons that provide automated, fast, and more accurate modelling based on point cloud data. In this paper, we present an investigation into the possibilities for automating the creation of BIM models from point cloud data. The result is a semi-automated process for modelling individual BIM elements, which we have tested on specific examples of modelling individual elements (walls, pipes, and columns). We note that despite the automation of the process, a high level of user interaction is still required to produce good quality models. Numéro de notice : A2021-931 Affiliation des auteurs : non IGN Thématique : IMAGERIE/URBANISME Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.15292/geodetski-vestnik.2021.04.594-613 Date de publication en ligne : 06/12/2021 En ligne : https://doi.org/10.15292/geodetski-vestnik.2021.04.594-613 Format de la ressource électronique : URL Article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=99410 [article]

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Utility-pole detection based on interwoven column generation from terrestrial mobile Laser scanner data / Siamak Talebi Nahr in Photogrammetric record, Vol 36 n° 176 (December 2021)  

Public [article]  inPhotogrammetric record > Vol 36 n° 176 (December 2021) . - pp 402 - 424 Titre : Utility-pole detection based on interwoven column generation from terrestrial mobile Laser scanner data Type de document : Article/Communication Auteurs : Siamak Talebi Nahr, Auteur ; Mohammad Saadatseresht, Auteur Année de publication : 2021 Article en page(s) : pp 402 - 424 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Lasergrammétrie [Termes IGN] détection d'objet [Termes IGN] données lidar [Termes IGN] données localisées 3D [Termes IGN] équipement collectif [Termes IGN] exactitude des données [Termes IGN] exhaustivité des données [Termes IGN] lidar mobile [Termes IGN] mur [Termes IGN] objet géographique complexe [Termes IGN] objet géographique urbain [Termes IGN] partitionnement par bloc [Termes IGN] qualité des données [Termes IGN] réseau électrique [Termes IGN] scène urbaine Résumé : (Auteur) Mobile lidar scanning is one of the recent technologies that is used to map street scenes rapidly. Among street objects, utility-poles are more critical to energy companies to monitor regularly through time. This paper presents a novel approach to detect utility-poles from mobile lidar data in complex city scenes. After removing ground points, the scene is gridded into blocks based on a shared-partitioning algorithm. Next, an interwoven column generation algorithm is used to create columns. Finally, each of these columns is considered to be a utility-pole or not. The proposed algorithm is tested on two test areas. The algorithm achieved Completeness, Correctness and Quality of 92.8%, 97.5% and 90.6% in Area 1, and 92.8%, 92.2% and 86.1% in Area 2. The total number of utility-poles in both areas was 265. The algorithm shows promising results in utility-pole detection in complex city scenes with attached walls. Numéro de notice : A2021-916 Affiliation des auteurs : non IGN Thématique : IMAGERIE/URBANISME Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1111/phor.12394 Date de publication en ligne : 10/12/2021 En ligne : https://doi.org/10.1111/phor.12394 Format de la ressource électronique : URL Article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=99331 [article]

Automated calibration of smartphone cameras for 3D reconstruction of mechanical pipes / Reza Maalek in Photogrammetric record, vol 36 n° 174 (June 2021)  

Public [article]  inPhotogrammetric record > vol 36 n° 174 (June 2021) . - pp 124 - 146 Titre : Automated calibration of smartphone cameras for 3D reconstruction of mechanical pipes Type de document : Article/Communication Auteurs : Reza Maalek, Auteur ; Derek D. Lichti, Auteur Année de publication : 2021 Article en page(s) : pp 124 - 146 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s) [Termes IGN] appariement de formes [Termes IGN] auto-étalonnage [Termes IGN] canalisation [Termes IGN] compensation par faisceaux [Termes IGN] ellipse [Termes IGN] étalonnage d'instrument [Termes IGN] reconstruction 3D [Termes IGN] structure-from-motion [Termes IGN] téléphone intelligent [Termes IGN] triangulation Résumé : (auteur) This paper outlines a new framework for the calibration of optical instruments, in particular smartphone cameras, using highly redundant circular black-and-white target fields. New methods were introduced for (i) matching targets between images; (ii) adjusting the systematic eccentricity error of target centres; and (iii) iteratively improving the calibration solution through a free-network self-calibrating bundle adjustment. The proposed method effectively matched circular targets in 270 smartphone images, taken within a calibration laboratory, with robustness to type II errors (false negatives). The proposed eccentricity adjustment, which requires only camera projective matrices from two views, behaved comparably to available closed-form solutions, which require additional a priori object-space target information. Finally, specifically for the case of mobile devices, the calibration parameters obtained using the framework were found to be superior compared to in situ calibration for estimating the 3D reconstructed radius of a mechanical pipe (approximately 45% improvement on average). Numéro de notice : A2021-512 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.1111/phor.12364 Date de publication en ligne : 06/06/2021 En ligne : https://doi.org/10.1111/phor.12364 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=97929 [article]

Advances in modeling and management of urban water networks / Enrico Creaco (2021)  

Public Titre : Advances in modeling and management of urban water networks Type de document : Monographie Auteurs : Enrico Creaco, Éditeur scientifique ; Alberto Campisano, Éditeur scientifique Editeur : Bâle [Suisse] : Multidisciplinary Digital Publishing Institute MDPI Année de publication : 2021 Importance : 290 p. Format : 16 x 24 cm ISBN/ISSN/EAN : 978-3-03943-790-0 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique [Termes IGN] algorithme génétique [Termes IGN] canalisation [Termes IGN] eau pluviale [Termes IGN] écoulement des eaux [Termes IGN] gestion de l'eau [Termes IGN] modèle de simulation [Termes IGN] modèle hydrographique [Termes IGN] optimisation (mathématiques) [Termes IGN] planification urbaine [Termes IGN] réseau d'assainissement [Termes IGN] réseau de distribution d'eau [Termes IGN] réseau de drainage [Termes IGN] réseau neuronal artificiel [Termes IGN] réseau technique urbain [Termes IGN] système d'information géographique Résumé : (éditeur) The Special Issue on Advances in Modeling and Management of Urban Water Networks (UWNs) explores four important topics of research in the context of UWNs: asset management, modeling of demand and hydraulics, energy recovery, and pipe burst identification and leakage reduction. In the first topic, the multi-objective optimization of interventions on the network is presented to find trade-off solutions between costs and efficiency. In the second topic, methodologies are presented to simulate and predict demand and to simulate network behavior in emergency scenarios. In the third topic, a methodology is presented for the multi-objective optimization of pump-as-turbine (PAT) installation sites in transmission mains. In the fourth topic, methodologies for pipe burst identification and leakage reduction are presented. As for the urban drainage systems (UDSs), the two explored topics are asset management, with a system upgrade to reduce flooding, and modeling of flow and water quality, with analyses on the transition from surface to pressurized flow, impact of water use reduction on the operation of UDSs, and sediment transport in pressurized pipes. The Special Issue also includes one paper dealing with the hydraulic modeling of an urban river with a complex cross-section. Note de contenu : 1- Advances in modeling and management of urban water networks 2- Cost–benefit prediction of asset management actions on water distribution networks 3- Nonlinear dynamic modeling of urban water consumption using chaotic approach (case study: City of Kelowna) 4- Hydraulic simulation and analysis of an urban center’s aqueducts using emergency scenarios for network operation: The case of Thessaloniki city in Greece 5- A bi-objective approach for optimizing the installation of PATs in systems of transmission mains 6- Geospatial information system-based modeling approach for leakage management in urban water distribution networks 7- Pattern recognition and clustering of transient pressure signals for burst location 8- Application of rehabilitation and active pressure control strategies for leakage reduction in a case-study network 9- An improved genetic algorithm for optimal layout of flow meters and valves in water network partitioning 10- Urban drainage network rehabilitation considering storm tank installation and pipe substitution 11- Multi-objective optimization for urban drainage or sewer networks rehabilitation through pipes substitution and storage tanks installation 12- Suppress numerical oscillations in transient mixed flow simulations with a modified HLL solver 13- A stochastic model to predict flow, nutrient and temperature changes in a sewer under water conservation scenarios 14- Sediment transport in sewage pressure pipes, Part I: Continuous determination of settling and erosion characteristics by in-situ TSS monitoring inside a pressure pipe in Northern Germany 15- Sediment transport in sewage pressure pipes, Part II: 1 D numerical simulation 16- Simulating flow of an urban river course with complex cross sections based on the MIKE21 FM model Numéro de notice : 28446 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE/INFORMATIQUE Nature : Recueil / ouvrage collectif DOI : 10.3390/books978-3-03943-790-0 En ligne : https://doi.org/10.3390/books978-3-03943-790-0 Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=98913

Spatial simulation of rainstorm waterlogging based on a water accumulation diffusion algorithm / Jingwei Hou in Geomatics, Natural Hazards and Risk, vol 11 n° 1 (2020)  

Public [article]  inGeomatics, Natural Hazards and Risk > vol 11 n° 1 (2020) . - pp 71 - 87 Titre : Spatial simulation of rainstorm waterlogging based on a water accumulation diffusion algorithm Type de document : Article/Communication Auteurs : Jingwei Hou, Auteur ; Yixian Du, Auteur Année de publication : 2020 Article en page(s) : pp 71 - 87 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications SIG [Termes IGN] base de données localisées [Termes IGN] canalisation [Termes IGN] Chine [Termes IGN] eau pluviale [Termes IGN] écoulement des eaux [Termes IGN] occupation du sol [Termes IGN] réseau de drainage [Termes IGN] simulation spatiale [Termes IGN] utilisation du sol Résumé : (auteur) This study presents a water accumulation diffusion algorithm to spatially simulate rainstorm-induced waterlogging for people’s lives and property safety. Taking part of Jinfeng District in Yinchuan City, China, as a study area, a storm water management model (SWMM) model is constructed with the aid of geographic information system (GIS) and remote sensing (RS) technologies. GIS is used to divide sub-catchments, generalize drainage system, set parameters, construct spatial geodatabase, and identify flood extents and depths. RS is used to obtain land-use/land-cover information. The water accumulation diffusion algorithm is then designed using the strategies of the dynamic interactions between pipes and surface and between central pixel and its neighbourhood pixels to transform water accumulation volume of sub-catchment into the submerged range and water accumulation depth. Positions, extents, depths, and volumes of water accumulation from pipe network and surface are simulated, respectively. The spatial simulation precisions of rainstorm waterlogging from the pipe network and surface are verified according to the measured and cyber rainstorm data, respectively. The results show that (1) the number of water accumulation nodes increases with the increase of rainfall intensity; (2) urban waterlogging is mainly distributed in the intersects of roads, low depressions and the aged drainage networks; and (3) spatial simulation of urban rainstorm waterlogging based on the GIS, RS, and SWMM techniques and the water accumulation diffusion algorithm is reliable. The results can provide decision-makings to predict rainstorm waterlogging, design drainage network, and construct a sponge city. Numéro de notice : A2020-566 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1080/19475705.2019.1707719 Date de publication en ligne : 06/01/2020 En ligne : https://doi.org/10.1080/19475705.2019.1707719 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=95891 [article]

Semi-automatic identification of submarine pipelines with synthetic aperture sonar Images / Victor Hugo Fernandes in Marine geodesy, Vol 43 n° 4 (July 2020)  

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Optimiser la gestion conjointe de la voirie et des réseaux enterrés à l'aide de la géomatique : conception d'un référentiel spatial de voirie / Antonin Pavard (2020)  

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Realistic modeling of power transmission lines with geographic information systems / Joram Schito (2020)  

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Evolution des techniques topographiques à EDF depuis les 40 dernières années / Rémy Boudon in XYZ, n° 160 (septembre 2019)

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La cartographie mobile et le géoréférencement précis de réseaux souterrains / Garance Weller in XYZ, n° 156 (septembre - novembre 2018)

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Développement de prototypes d’application et de services web en réponse aux enjeux du SIG éolien d’EDF-EN / Valentine Monchiet (2018) 

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Going underground / Erik Dahlberg in GEO: Geoconnexion international, vol 16 n° 9 (September 2017)

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Assessment of urban energy performance through integration of BIM and GIS for smart city planning / Shinji Yamamura in Procedia Engineering, vol 180 ([01/06/2017])  

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Géodétection des réseaux enterrés par imagerie radar / Guillaume Terrasse (2017)  

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La pose d'une canalisation en acier de transport de gaz par un forage dirigé sous le jabron à Sisteron / Laurent Carron in XYZ, n° 147 (juin - août 2016) 

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