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ISPRS Technical commission 7 symposium, 100 years ISPRS, Advancing Remote Sensing Science, July 5-7, 2010, Vienna, Austria, Part B. Papers accepted on the basis of peer-reviewed abstracts / Wolfgang Wagner (2010)Voir aussiRéservation
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Code-barres Cote Support Localisation Section Disponibilité 19912-01B CG2010 Livre Centre de documentation Congrès Disponible ISPRS Technical commission 7 symposium, 100 years ISPRS, Advancing Remote Sensing Science, July 5-7, 2010, Vienna, Austria, Part A. Papers accepted on the basis of peer-reviewed full manuscripts / Wolfgang Wagner (2010)
Titre de série : ISPRS Technical commission 7 symposium, 100 years ISPRS, Advancing Remote Sensing Science, July 5-7, 2010, Vienna, Austria, Part A Titre : Papers accepted on the basis of peer-reviewed full manuscripts Type de document : Actes de congrès Auteurs : Wolfgang Wagner, Éditeur scientifique ; Balazs Székely, Éditeur scientifique Editeur : International Society for Photogrammetry and Remote Sensing ISPRS Année de publication : 2010 Collection : International Archives of Photogrammetry and Remote Sensing, ISSN 0252-8231 num. 38-7A Conférence : ISPRS 2010, Technical commission 7 symposium, 100 years ISPRS, Advancing Remote Sensing Science 05/07/2010 07/07/2010 Vienne Autriche OA ISPRS Archives Importance : 328 p. Format : 21 x 30 cm Langues : Anglais (eng) Numéro de notice : 19912A Affiliation des auteurs : non IGN Thématique : IMAGERIE/INFORMATIQUE Nature : Actes DOI : sans En ligne : http://www.isprs.org/proceedings/XXXVIII/part7/a/default.aspx Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=86208 Voir aussiRéservation
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Code-barres Cote Support Localisation Section Disponibilité 19912-01A CG2010 Livre Centre de documentation Congrès Disponible Matching terrestrial images captured by a nomad system to images of a reference database for pose estimation purpose / Arnaud Le Bris (2010)
contenu dans Photogrammetric computer vision and image analysis, ISPRS Commission 3 symposium, Saint-Mandé, 1-3 septembre 2010, volume 1. Papers accepted on the basis of peer-reviewed full manuscripts / Nicolas Paparoditis (2010)
Titre : Matching terrestrial images captured by a nomad system to images of a reference database for pose estimation purpose Type de document : Article/Communication Auteurs : Arnaud Le Bris , Auteur ; Nicolas Paparoditis , Auteur Editeur : International Society for Photogrammetry and Remote Sensing ISPRS Année de publication : 2010 Conférence : PCV 2010, ISPRS - Commission 3 symposium Photogrammetric computer vision and image analysis 01/09/2010 03/09/2010 Saint-Mandé France ISPRS OA Archives Importance : pp 133 - 137 Note générale : Bibliographie
Paper accepted on the basis of peer-reviewed full manuscriptLangues : Anglais (eng) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s)
[Termes IGN] géoréférencement direct
[Termes IGN] image panoramique
[Termes IGN] intégration de données
[Termes IGN] points homologues
[Termes IGN] SIFT (algorithme)
[Termes IGN] Stéréopolis
[Termes IGN] système de numérisation mobileRésumé : (Auteur) Mobile mapping systems have been developed to achieve a fast automated acquisition of huge quantity of georeferenced terrestrial images in urban cities. Stereopolis is such a system making it possible to capture panoramic groups of images. These georeferenced photos are then stored in urban images street scale reference databases. The issue investigated in this paper is the problem of tie points extraction between new images captured with an approximate georeferencement by a ”nomad system” and images from the reference database in order to estimate a precise pose for these new images. Because of several difficulties (diachronism, viewpoint change, scale variation, repetitive patterns) extracting enough correct well distributed tie points is difficult and directly extracted and matched SIFT keypoints from original images are most of the time not sufficient. Nevertheless, results can be improved using ortho-rectified images on the facade plane instead of original images. Rectification parameters (3D rotation) are obtained from the coordinates of vanishing points corresponding to the two main directions of the facade. These points can indeed be extracted from linear features of the facade on the images. However, many point matches remain false and difficult to detect using only their image coordinates. The use of both image coordinates and scale and orientation associated to the matched SIFT keypoints makes it possible to detect outliers and to obtain an approximate similitude model between the two ortho-images. A more accurate model can then be computed from correct tie points. Numéro de notice : C2010-003 Affiliation des auteurs : MATIS (1993-2011) Thématique : IMAGERIE Nature : Communication DOI : sans En ligne : https://www.isprs.org/proceedings/XXXVIII/part3/a/pdf/133_XXXVIII-part3A.pdf Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=65058 Modelling three-dimensional geoscientific datasets with the discrete Voronoi diagram / T. Van Der Putte (2010)
Titre : Modelling three-dimensional geoscientific datasets with the discrete Voronoi diagram Type de document : Article/Communication Auteurs : T. Van Der Putte, Auteur ; Hugo Ledoux, Auteur Editeur : International Society for Photogrammetry and Remote Sensing ISPRS Année de publication : 2010 Collection : International Archives of Photogrammetry, Remote Sensing and Spatial Information Sciences, ISSN 1682-1750 num. 38-4/W15 Conférence : 3D GeoInfo 2010, ISPRS 5th International Conference on 3D GeoInformation 03/11/2010 04/11/2010 Berlin Allemagne OA ISPRS Archives Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique
[Termes IGN] diagramme de Voronoï
[Termes IGN] données localisées 3D
[Termes IGN] modélisation 3D
[Termes IGN] quantité discrèteRésumé : (Auteur) Geoscientific datasets are often formed by scattered samples in 3D space having highly anisotropic distribution. To model the continuity of the phenomena they represent (e.g. temperature of a body of water, or percentage of a chemical in the air) raster structures are in most cases used. To overcome the shortcomings of rasters the Voronoi diagram (VD) has been proposed as an alternative. However, while in theory the VD is a sound solution, its use in practice is hindered by the fact that it is complex to construct and to manipulate (removal of samples, interpolation, etc.), and spatial tools have to be built. We propose in this paper a “middle" solution: the 3D discrete Voronoi diagram (DVD). We investigate the properties of the 3D DVD, we propose algorithms to construct and manipulate it, and we demonstrate its use in practice with a prototype that we have built. Our prototype uses existing tools for visualisation and further analysis of DVDs. Numéro de notice : C2010-048 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Communication DOI : sans En ligne : https://www.isprs.org/proceedings/XXXVIII/4-W15/Paper/3DGeoInfo2010_Ledoux_Voron [...] Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=64366 Motion blur detection in aerial images shot with channel-dependent exposure time / Lâmân Lelégard (2010)
contenu dans Photogrammetric computer vision and image analysis, ISPRS Commission 3 symposium, Saint-Mandé, 1-3 septembre 2010, volume 1. Papers accepted on the basis of peer-reviewed full manuscripts / Nicolas Paparoditis (2010)
Titre : Motion blur detection in aerial images shot with channel-dependent exposure time Type de document : Article/Communication Auteurs : Lâmân Lelégard , Auteur ; Mathieu Brédif , Auteur ; Bruno Vallet , Auteur ; Didier Boldo , Auteur Editeur : International Society for Photogrammetry and Remote Sensing ISPRS Année de publication : 2010 Conférence : PCV 2010, ISPRS - Commission 3 symposium Photogrammetric computer vision and image analysis 01/09/2010 03/09/2010 Saint-Mandé France ISPRS OA Archives Importance : pp 180 - 185 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s)
[Termes IGN] anisotropie
[Termes IGN] détection automatique
[Termes IGN] image aérienne
[Termes IGN] transformation de FourierRésumé : (Auteur) This paper presents a simple yet efficient approach for automatic blur detection in aerial images provided by a multi-channel digital camera system. The blur in consideration is due to the airplane motion and causes anisotropy in the Fourier Transform of the image. This anisotropy can be detected and estimated to recover the characteristics of the motion blur, but one cannot disambiguate the anisotropy produced by a motion blur from the possible spectral anisotropy of the underlying sharp image. The proposed approach uses a camera with channel-dependent exposure times to address this issue. Under this multi-exposure setting, the motion blur kernel is scaled proportionally to the exposure-time, whereas the phase differences between the underlying sharp colour channels are assumedly negligible. We show that considering the phase of the ratio of the Fourier Transforms of two channels enhances blur detection. Results obtained on 2000 images confirm the operational efficiency of our method. Numéro de notice : C2010-005 Affiliation des auteurs : MATIS+Ext (1993-2011) Thématique : IMAGERIE Nature : Communication nature-HAL : ComAvecCL&ActesPubliésIntl DOI : sans En ligne : https://www.isprs.org/proceedings/XXXVIII/part3/a/pdf/180_XXXVIII-part3A.pdf Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=65060 PermalinkPhotogrammetric computer vision and image analysis, ISPRS Commission 3 symposium, Saint-Mandé, 1-3 septembre 2010, volume 1. Papers accepted on the basis of peer-reviewed full manuscripts / Nicolas Paparoditis (2010)PermalinkPhotogrammetric computer vision and image analysis: ISPRS Commission 3 symposium, Saint-Mandé, 1-3 septembre 2010, volume 2. Papers accepted on the basis of abstracts / Nicolas Paparoditis (2010)PermalinkUpdating and improving the accuracy of a large 3D database through the careful use of GCPs and Icesat data : Example of REFERENCE3D / Emilie Le Hir (2010)PermalinkPermalink3D builbing reconstruction from lidar based on a cell decomposition approach / Martin Kada (01/12/2009)PermalinkAirborne lidar feature selection for urban classification using random forests / Nesrine Chehata (2009)PermalinkAn unsupervised hierarchical segmentation of a facade building image in elementary 2D-models / Jean-Pascal Burochin (2009)PermalinkBuilding footprint database improvement for 3D reconstruction : a direction aware split and merge approach / Bruno Vallet (2009)PermalinkCircular road sign extraction from street level images using colour, shape and texture database maps / Aurore Arlicot (2009)Permalink