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Terrestrial laser scan survey and 3D TIN model construction of urban buildings in a geospatial database / T. Tang in Geocarto international, vol 23 n° 4 (August - September 2008)  

Public [article]  inGeocarto international > vol 23 n° 4 (August - September 2008) . - pp 259 - 272 Titre : Terrestrial laser scan survey and 3D TIN model construction of urban buildings in a geospatial database Type de document : Article/Communication Auteurs : T. Tang, Auteur ; W. Zhao, Auteur Année de publication : 2008 Article en page(s) : pp 259 - 272 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications photogrammétriques [Termes IGN] base de données localisées [Termes IGN] données lidar [Termes IGN] données localisées 3D [Termes IGN] lasergrammétrie [Termes IGN] modélisation 3D [Termes IGN] reconstruction 3D du bâti [Termes IGN] texturage [Termes IGN] Triangulated Irregular Network Résumé : (Auteur) A new method applying close range laser scan (Lidar) survey in capturing 3D objects was presented in this study. One linear laser source Lidar was used for the survey of the objects. This approach is particularly essential for 3D modelling of urban buildings in a geospatial database. Data calibration and merging were conducted for combing point cluster datasets surveyed from different locations and angles of one object in order to generate a 3D data model for the entire object. The point cluster data were transformed and converted into a triangulated irregular network (TIN) mesh model in a 3D geospatial database. The TIN mesh model was compressed and simplified by applying a computing script of surface variability priority parameters. The digital surface images and textures of the building object were draped onto the 3D TIN model according to their coordinate locations. This research provides a direct and fast means of capturing 3D objects on the Earth's surface in a geospatial database. Copyright Taylor & Francis Numéro de notice : A2008-300 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/10106040801915917 Date de publication en ligne : 17/07/2008 En ligne : https://doi.org/10.1080/10106040801915917 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29293 [article]

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
059-08041	RAB	Revue	Centre de documentation	En réserve L003	Disponible

Monitoring post-mining subsidence in the North-Pas-de-Calais coal basin (France): interferometric SAR results and levelling / Daniel Raucoules in Geocarto international, vol 23 n° 4 (August - September 2008)  

Public [article]  inGeocarto international > vol 23 n° 4 (August - September 2008) . - pp 287 - 295 Titre : Monitoring post-mining subsidence in the North-Pas-de-Calais coal basin (France): interferometric SAR results and levelling Type de document : Article/Communication Auteurs : Daniel Raucoules, Auteur ; S. Le Mouelic, Auteur ; C. Carnec, Auteur ; Y. Guise, Auteur Année de publication : 2008 Article en page(s) : pp 287 - 295 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image radar et applications [Termes IGN] analyse comparative [Termes IGN] déformation de la croute terrestre [Termes IGN] détection de changement [Termes IGN] erreur systématique [Termes IGN] interféromètrie par radar à antenne synthétique [Termes IGN] mine de charbon [Termes IGN] nivellement [Termes IGN] Nord-Pas-de-Calais [Termes IGN] subsidence Résumé : (Auteur) The interferometric synthetic aperture radar (InSAR) technique is used to detect surface deformations in the French Nord-Pas-de-Calais coal mining basin. Several subsiding areas had already been observed at the sites of Lens, Billy-Montigny, Courrieres and Ostricourt during the 1992-2000 period. InSAR deformation measurements are compared with ground-based levelling measurements and an analysis of the results shows a good agreement for the relative deformations. However, the InSAR study reveals a systematic bias of the absolute levelling values. Our interpretation is that the stability points of the ground-based monitoring network probably moved during the study period. Such cross-checking is particularly important considering the current legal value of the levelling measurements. Copyright Taylor & Francis Numéro de notice : A2008-301 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/10106040801951102 Date de publication en ligne : 17/07/2008 En ligne : https://doi.org/10.1080/10106040801951102 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29294 [article]

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
059-08041	RAB	Revue	Centre de documentation	En réserve L003	Disponible