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Urfist de Bordeaux : l’open science par la pratique / Sabrina Granger in Arabesques, n° 84 (février - mars 2017)
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Titre : Urfist de Bordeaux : l’open science par la pratique Type de document : Article/Communication Auteurs : Sabrina Granger, Auteur Année de publication : 2017 Article en page(s) : pp 26 - 27 Langues : Français (fre) Descripteur : [Termes IGN] code source libre
[Termes IGN] information scientifique et technique
[Termes IGN] logiciel libre
[Termes IGN] recherche scientifiqueRésumé : (éditeur) A Bordeaux, depuis trois ans, chercheurs et doctorants attentifs à éviter les pièges de la « bad science » se forment à des logiciels conçus par leurs pairs. Et leurs besoins sont souvent comblés au-delà de leurs espérances. Numéro de notice : A2017-126 Affiliation des auteurs : non IGN Thématique : SOCIETE NUMERIQUE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=84531
in Arabesques > n° 84 (février - mars 2017) . - pp 26 - 27[article]Documents numériques
en open access
Urfist de Bordeaux : l’open science par la pratiqueAdobe Acrobat PDFImproving FOSS photogrammetric workflows for processing large image datasets / Oscar Martinez-Rubi in Open Geospatial Data, Software and Standards, vol 2 (2017)
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Titre : Improving FOSS photogrammetric workflows for processing large image datasets Type de document : Article/Communication Auteurs : Oscar Martinez-Rubi, Auteur ; Francesco Nex, Auteur ; Marc Pierrot-Deseilligny , Auteur ; Ewelina Rupnik
, Auteur
Année de publication : 2017 Projets : 1-Pas de projet / Article en page(s) : n° 12 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Photogrammétrie numérique
[Termes IGN] appariement de points
[Termes IGN] code source libre
[Termes IGN] compensation par faisceaux
[Termes IGN] image numérique
[Termes IGN] jeu de données localisées
[Termes IGN] logiciel de photogrammétrie
[Termes IGN] logiciel libre
[Termes IGN] points homologues
[Termes IGN] semis de pointsRésumé : (auteur) Background : In the last decade Photogrammetry has shown to be a valid alternative to LiDAR techniques for the generation of dense point clouds in many applications. However, dealing with large image sets is computationally demanding. It requires high performance hardware and often long processing times that makes the photogrammetric point cloud generation not suitable for mapping purposes at regional and national scale. These limitations are partially overcome by commercial solutions, thanks to the use of expensive and dedicated hardware. Nonetheless, a Free and Open-Source Software (FOSS) photogrammetric solution able to cope with these limitations is still missing.
Methods : In this paper, the bottlenecks of the basic components of photogrammetric workflows -tie-points extraction, bundle block adjustment (BBA) and dense image matching- are tackled implementing FOSS solutions. We present distributed computing algorithms for the tie-points extraction and for the dense image matching. Moreover, we present two algorithms for decreasing the memory needs of the BBA. The various algorithms are deployed on different hardware systems including a computer cluster.
Results and conclusions : The usage of the algorithms presented allows to process large image sets reducing the computational time. This is demonstrated using two different datasets.Numéro de notice : A2017-895 Affiliation des auteurs : LASTIG MATIS+Ext (2012-2019) Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1186/s40965-017-0024-5 Date de publication en ligne : 15/05/2017 En ligne : https://doi.org/10.1186/s40965-017-0024-5 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=96890
in Open Geospatial Data, Software and Standards > vol 2 (2017) . - n° 12[article]OpenBIM framework for a collaborative historic preservation system / Shawn E. O'Keeffe in International journal of 3-D information modeling, vol 5 n° 4 (October - December 2016)
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Titre : OpenBIM framework for a collaborative historic preservation system Type de document : Article/Communication Auteurs : Shawn E. O'Keeffe, Auteur Année de publication : 2016 Article en page(s) : pp 1 - 11 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique web
[Termes IGN] application web
[Termes IGN] CityGML
[Termes IGN] code source libre
[Termes IGN] données lidar
[Termes IGN] données localisées 3D
[Termes IGN] format d'échange
[Termes IGN] format Industry foudation classes IFC
[Termes IGN] logiciel libre
[Termes IGN] modélisation 3D du bâti BIM
[Termes IGN] monde virtuel
[Termes IGN] monument historique
[Termes IGN] préservation
[Termes IGN] surveillance d'ouvrage
[Termes IGN] système d'information géographique
[Termes IGN] télémétrie laser terrestreRésumé : (auteur) The authors have developed a novel system framework for a historic preservation system utilising open standards and open source tools. The framework enables the integration of open standard 3D models and GIS in a virtual environment (VE). It also allows the storage and harvesting of data via an open source web-based central repository. The framework is designed for bi-directional interoperability when utilised for monument tracking, preservation, conservation, re-excavation, etc. To date, no such system framework exists for the development and management of historic monuments using open standards e57 for terrestrial laser scanning (TLS) data, the industry foundation classes (IFC) for 3D semantic rich models, and CityGML for integrating IFC and GIS in a VE. The web-based VE is accessed from the BimServer and envisaged for monitoring monument erosion, movement, and damage to monuments by human activity or nature, collaboration between different industry actors to share knowledge, experience, and expertise globally, etc. Numéro de notice : A2016--162 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE/IMAGERIE Nature : Article DOI : 10.4018/IJ3DIM.2016100101 En ligne : https://doi.org/10.4018/IJ3DIM.2016100101 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=85915
in International journal of 3-D information modeling > vol 5 n° 4 (October - December 2016) . - pp 1 - 11[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 138-2016041 RAB Revue Centre de documentation En réserve L003 Disponible Conception de modèles 3D précis pour un suivi 4D optimisé des ouvrages hydrauliques linéaires : intérêt et particularité du drone / Vincent Tournadre in La Houille Blanche, revue internationale de l'eau, vol 2016 n° 3 (juin 2016)
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Titre : Conception de modèles 3D précis pour un suivi 4D optimisé des ouvrages hydrauliques linéaires : intérêt et particularité du drone Titre original : Accurate 3D models for a 4D monitoring of linear hydraulic structures: opportunities and characteristics of UAV Type de document : Article/Communication Auteurs : Vincent Tournadre , Auteur ; Jacques Beilin
, Auteur ; Marc Pierrot-Deseilligny
, Auteur ; Paul-Henri Faure, Auteur
Année de publication : 2016 Article en page(s) : pp 33 - 38 Note générale : bibliographie Langues : Français (fre) Anglais (eng) Descripteur : [Vedettes matières IGN] Applications photogrammétriques
[Termes IGN] auscultation d'ouvrage
[Termes IGN] code source libre
[Termes IGN] contrôle métrologique
[Termes IGN] digue
[Termes IGN] données spatiotemporelles
[Termes IGN] drone
[Termes IGN] image captée par drone
[Termes IGN] logiciel libre
[Termes IGN] métrologie géodésique
[Termes IGN] métrologie tridimensionnelle
[Termes IGN] modèle 3D du site
[Termes IGN] objet géographique linéaire
[Termes IGN] photogrammétrie aérienne
[Termes IGN] photogrammétrie métrologiqueRésumé : (auteur) Confronted with the ageing of its dikes and with the sometimes degraded conditions of access, the Compagnie Nationale du Rhône, the 2nd producer of hydro electricity in France, wishes to develop new systems of auscultation complementary to the sensors and visual inspections already deployed. The developments of drones, photographic sensors and algorithms of automatic calculations of 3D modelling from multi-stereoscopic images allow today to obtain the fine geometry of linear works via 3D models. At present, with a network of point to the dense ground, the reachable precision is of the order of 5 cm. In order to achieve the desired specifications (± 1 cm ± 3 cm) while minimizing the number of points on the ground, and thus the time field, CNR and the National Institute of Geographic and Forest Information (IGN) have established a partnership resulting in the completion of a research thesis on metrology by light airborne photogrammetry applied to the monitoring of developments dikes. The paper attempts to present the context of the project through the description of the current monitoring of embankments and of the new needs in auscultation of CNR. The following, based on a case study on the dike of the Palière is introducing advanced photogrammetric methods to mid 2015 to reach centimeter details with only 1 setting point ground for every 100 meters. Located at the interface of the world of Drones, of Research in photogrammetric algorithms and of concessionaires needs, the project will lead to the end of 2015 to an enhanced testing system allowing centimeter monitoring of sensitive embankments areas. The new photogrammetric algorithms written in an open source environment will be open to the entire scientific community and solved problems (high precision geo measures on linear structures) will be used by other distributors on other works with the same geometry. Numéro de notice : A2016--194 Affiliation des auteurs : ENSG+Ext (2012-2019) Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueNat DOI : 10.1051/lhb/2016028 Date de publication en ligne : 19/07/2016 En ligne : https://doi.org/10.1051/lhb/2016028 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=91848
in La Houille Blanche, revue internationale de l'eau > vol 2016 n° 3 (juin 2016) . - pp 33 - 38[article]Service-oriented model-encapsulation strategy for sharing and integrating heterogeneous geo-analysis models in an open web environment / Songshan Yue in ISPRS Journal of photogrammetry and remote sensing, vol 114 (April 2016)
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Titre : Service-oriented model-encapsulation strategy for sharing and integrating heterogeneous geo-analysis models in an open web environment Type de document : Article/Communication Auteurs : Songshan Yue, Auteur ; Min Chen, Auteur ; Yongning Wen, Auteur ; Guonian Lu, Auteur Année de publication : 2016 Article en page(s) : pp 258 – 273 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique web
[Termes IGN] analyse spatiale
[Termes IGN] architecture orientée services
[Termes IGN] code source libre
[Termes IGN] encapsulation
[Termes IGN] informatique en nuage
[Termes IGN] modèle analytique
[Termes IGN] plateforme logicielle
[Termes IGN] service web
[Termes IGN] web des données
[Termes IGN] Web Processing ServiceRésumé : (auteur) Earth environment is extremely complicated and constantly changing; thus, it is widely accepted that the use of a single geo-analysis model cannot accurately represent all details when solving complex geo-problems. Over several years of research, numerous geo-analysis models have been developed. However, a collaborative barrier between model providers and model users still exists. The development of cloud computing has provided a new and promising approach for sharing and integrating geo-analysis models across an open web environment. To share and integrate these heterogeneous models, encapsulation studies should be conducted that are aimed at shielding original execution differences to create services which can be reused in the web environment. Although some model service standards (such as Web Processing Service (WPS) and Geo Processing Workflow (GPW)) have been designed and developed to help researchers construct model services, various problems regarding model encapsulation remain. (1) The descriptions of geo-analysis models are complicated and typically require rich-text descriptions and case-study illustrations, which are difficult to fully represent within a single web request (such as the GetCapabilities and DescribeProcess operations in the WPS standard). (2) Although Web Service technologies can be used to publish model services, model users who want to use a geo-analysis model and copy the model service into another computer still encounter problems (e.g., they cannot access the model deployment dependencies information). This study presents a strategy for encapsulating geo-analysis models to reduce problems encountered when sharing models between model providers and model users and supports the tasks with different web service standards (e.g., the WPS standard). A description method for heterogeneous geo-analysis models is studied. Based on the model description information, the methods for encapsulating the model-execution program to model services and for describing model-service deployment information are also included in the proposed strategy. Hence, the model-description interface, model-execution interface and model-deployment interface are studied to help model providers and model users more easily share, reuse and integrate geo-analysis models in an open web environment. Finally, a prototype system is established, and the WPS standard is employed as an example to verify the capability and practicability of the model-encapsulation strategy. The results show that it is more convenient for modellers to share and integrate heterogeneous geo-analysis models in cloud computing platforms. Numéro de notice : A2016-537 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.isprsjprs.2015.11.002 En ligne : https://doi.org/10.1016/j.isprsjprs.2015.11.002 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=81681
in ISPRS Journal of photogrammetry and remote sensing > vol 114 (April 2016) . - pp 258 – 273[article]Point cloud server (PCS) : point clouds in-base management and processing / Rémi Cura in ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, vol II-3 W5 (October 2015)
PermalinkPermalinkAutomated image-based procedures for accurate artifacts 3D modeling and orthoimage generation / Marc Pierrot-Deseilligny in Geoinformatics FCE CTU, vol 6 (2011)
PermalinkAutomated image-based procedures for accurate artifacts 3D modeling and orthoimage generation / Marc Pierrot-Deseilligny (2011)
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