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Creation of parametric BIM objects from point clouds using nurbs / Luigi Barazzetti in Photogrammetric record, vol 30 n° 152 (December 2015 - February 2016)  

Public [article]  inPhotogrammetric record > vol 30 n° 152 (December 2015 - February 2016) . - pp 339 - 362 Titre : Creation of parametric BIM objects from point clouds using nurbs Type de document : Article/Communication Auteurs : Luigi Barazzetti, Auteur ; Fabrizio Banfi, Auteur ; Raffaella Brumana, Auteur ; Mattia Previtali, Auteur Année de publication : 2015 Article en page(s) : pp 339 - 362 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image radar et applications [Termes IGN] architecture [Termes IGN] fonction spline [Termes IGN] modélisation 3D du bâti BIM [Termes IGN] reconstruction 3D du bâti [Termes IGN] semis de points [Termes IGN] surface B-spline rationnelle non uniforme Résumé : (auteur) This paper presents an innovative procedure to create parametric building information modelling (BIM) objects from point clouds of complex architectural features. BIM technology requires an advanced parametric representation of the geometry involving spatial relationships, constraints and material properties. The aim of the procedure is a BIM-based reconstruction methodology that preserves the level of detail encapsulated in photogrammetric and laser-scanning point clouds, and relies on non-uniform rational basis splines (NURBS) curves. The particular case of architectural objects with irregular shapes is addressed due to the lack of commercial BIM software able to handle such buildings. An actual case study made up of 7·5 billion points is discussed to demonstrate the use of the proposed procedure with huge point-cloud datasets. Numéro de notice : A2015-826 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.1111/phor.12122 Date de publication en ligne : 15/12/2015 En ligne : https://doi.org/10.1111/phor.12122 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=79122 [article]

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106-2015041	RAB	Revue	Centre de documentation	En réserve L003	Disponible

Simultaneous registration of gnomonic projections and central perspectives / Luigi Barazzetti in Photogrammetric record, vol 29 n° 147 (September - November 2014)  

Public [article]  inPhotogrammetric record > vol 29 n° 147 (September - November 2014) . - pp 278 - 296 Titre : Simultaneous registration of gnomonic projections and central perspectives Type de document : Article/Communication Auteurs : Luigi Barazzetti, Auteur ; Mattia Previtali, Auteur ; Marco Scaioni, Auteur Année de publication : 2014 Article en page(s) : pp 278 - 296 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s) [Termes IGN] compensation par faisceaux [Termes IGN] image panoramique [Termes IGN] orientation d'image [Termes IGN] photogrammétrie terrestre [Termes IGN] projection gnomonique [Termes IGN] traitement automatique d'images Résumé : (Auteur) An innovative methodology that combines central perspectives and panoramic gnomonic projections into an integrated bundle block adjustment is discussed. The use of both kinds of images generates metric products with a superior level of detail (image resolution) compared with conventional central perspectives alone, whilst achieving the accuracy of the latter. The entire methodology is intended as a low-cost solution to improving the ground sampling distance over that achievable with single exposures by conventional modern terrestrial cameras. Very high-resolution close-range images can be automatically generated and oriented with a rigorous multi-step procedure that integrates both types of images within a unified least squares adjustment. The advantages and disadvantages of the proposed approach are analysed from both theoretical and practical points of view and illustrated through a series of examples. Numéro de notice : A2014-489 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.1111/phor.12062 Date de publication en ligne : 18/09/2014 En ligne : https://doi.org/10.1111/phor.12062 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=74078 [article]

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106-2014031	RAB	Revue	Centre de documentation	En réserve L003	Disponible