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An ergonomic interface to compute 3D models using photogrammetry / Isabelle Cléry (2011)  

Public Titre : An ergonomic interface to compute 3D models using photogrammetry Type de document : Article/Communication Auteurs : Isabelle Cléry, Auteur ; Marc Pierrot-Deseilligny , Auteur Editeur : Saint-Mandé : Institut Géographique National - IGN (2008-2011) Année de publication : 2011 Conférence : CIPA 2011, 23th international symposium Comité international de photogrammétrie architecturale 12/09/2011 16/09/2011 Prague République tchèque OA Proceedings Note générale : bibliographie Langues : Français (fre) Descripteur : [Vedettes matières IGN] Photogrammétrie [Termes IGN] appariement dense [Termes IGN] archéologie [Termes IGN] interface graphique [Termes IGN] logiciel de photogrammétrie [Termes IGN] MicMac [Termes IGN] traitement d'image Résumé : (auteur) Many commercial softwares offer to create 3D models of objects or scenes from photographs only. However professionals, including archaeologists and architects, have numerous constraints that severely restrict the choice of such software, such as limited financial resources, little knowledge in photogrammetry and computing, professional imperatives that limit the time of acquisition and processing (particularly manual treatments), and finally specific expectations in terms of quality, precision and completeness of the modeling. The MATIS laboratory has developed a set of free, open source tools, which can perform all stages of photogrammetric projects processing and that provide dense and precise 3D models thanks to the rigorous photogrammetric approach. A graphical interface, which will be presented in this paper, is being developed to provide a unified and simplified access to these tools. Through the interface, the user can manipulate the images of the same site and control every step of processing that includes : the automatic calculation of tie points between images, the estimation of camera poses and the 3D models calculation. The results can be converted into depth maps or dense 3D points clouds (in standard ply format), and can be displayed directly by the GUI. Particular attention is paid to the quality of documentation and to the product portability on the main types of operating systems (Linux, Mac and Windows). This interface, although not finalized, already enables to perform the full treatment of certain types of surveys and is available on-line. Numéro de notice : C2011-062 Affiliation des auteurs : MATIS (1993-2011) Thématique : IMAGERIE/INFORMATIQUE Nature : Communication DOI : sans En ligne : https://www.conferencepartners.cz/cipa/proceedings/pdfs/A-2/Clery.pdf Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=101215

Automated image-based procedures for accurate artifacts 3D modeling and orthoimage generation / Marc Pierrot-Deseilligny (2011)  

Public Titre : Automated image-based procedures for accurate artifacts 3D modeling and orthoimage generation Type de document : Article/Communication Auteurs : Marc Pierrot-Deseilligny , Auteur ; Livio de Luca, Auteur ; Fabio Remondino, Auteur Editeur : Saint-Mandé : Institut Géographique National - IGN (2008-2011) Année de publication : 2011 Conférence : CIPA 2011, 23th international symposium Comité international de photogrammétrie architecturale 12/09/2011 16/09/2011 Prague République tchèque OA Proceedings Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] code source libre [Termes IGN] compensation par faisceaux [Termes IGN] logiciel libre [Termes IGN] modélisation 3D [Termes IGN] orthoimage [Termes IGN] semis de points Résumé : (auteur) The accurate 3D documentation of architectures and heritages is getting very common and required in different application contexts. The potentialities of the image-based approach are nowadays very well-known but there is a lack of reliable, precise and flexible solutions, possibly open-source, which could be used for metric and accurate documentation or digital conservation and not only for simple visualization or web-based applications. The article presents a set of photogrammetric tools developed in order to derive accurate 3D point clouds and orthoimages for the digitization of archaeological and architectural objects. The aim is also to distribute free solutions (software, methodologies, guidelines, best practices, etc.) based on 3D surveying and modeling experiences, useful in different application contexts (architecture, excavations, museum collections, heritage documentation, etc.) and according to several representation needs (2D technical documentation, 3D reconstruction, web visualization, etc. Numéro de notice : C2011-063 Affiliation des auteurs : MATIS+Ext (1993-2011) Thématique : IMAGERIE/INFORMATIQUE Nature : Communication DOI : sans En ligne : https://www.conferencepartners.cz/cipa/proceedings/pdfs/B-2/Remondino2.pdf Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=101216

Complementarity of terrestrial laser scanning and DSM from aerial photography: the example of the Cathedral of Amiens / Raphaële Heno (2011)    

Public Titre : Complementarity of terrestrial laser scanning and DSM from aerial photography: the example of the Cathedral of Amiens Type de document : Article/Communication Auteurs : Raphaële Heno , Auteur ; Laure Chandelier , Auteur ; Fanny Clauzel, Auteur ; Rémi Hanon, Auteur Editeur : Champs-sur-Marne : Ecole nationale des sciences géographiques ENSG Année de publication : 2011 Conférence : CIPA 2011, 23th international symposium Comité international de photogrammétrie architecturale 12/09/2011 16/09/2011 Prague République tchèque OA Proceedings Note générale : bibliographie Langues : Anglais (eng) Résumé : (auteur) As every year, the ten students of the PPMD master's degree (Specialized Master’s in Positionning, Photogrammetry and Deformation Measurement) of the French ENSG (Ecole Nationale des Sciences Géographiques), started their degree course last October with close-range photogrammetry fieldwork, which makes them practise every phase in the design, acquisition and processing of georeferenced data, within the stimulating context of a real project. They had a welcome opportunity to contribute to a long-term multidisciplinary project on the prestigious site of the almost thousand-year-old cathedral of Amiens, a royal town 140 km north of Paris. The ENSG team was in charge of surveying the southern arm of the transept of the famous cathedral at high-resolution. Since this monument is complex and full of different levels of detail (from large and rather flat walls up to very finely sculpted ones), it was necessary to use different and complementary techniques: topometry, terrestrial laser scanning, terrestrial and aerial photographic survey. The students returned to the ENSG with an interesting dataset to work on during the academic year. The scientific and cultural aspects of this innovative project greatly increased their motivation, making them particularly careful about everything taught in the field. ENSG teachers have been working on this data regularly since their return from the field, aiming to produce a full 3D model from both aerial and terrestrial data. As for their colleagues in Amiens, they were not only provided with a complete survey of the project area, but also with a group of reference methods to carry out the remaining survey operations. Numéro de notice : C2011-066 Affiliation des auteurs : ENSG (1941-2011) Thématique : IMAGERIE Nature : Communication nature-HAL : ComAvecCL&ActesPubliésIntl DOI : sans En ligne : https://www.conferencepartners.cz/cipa/proceedings/pdfs/B-4/Heno.pdf Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=101223

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