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A method for detecting windows from mobile lidar data / R. Wang in Photogrammetric Engineering & Remote Sensing, PERS, vol 78 n° 11 (November 2012)
[article]
Titre : A method for detecting windows from mobile lidar data Type de document : Article/Communication Auteurs : R. Wang, Auteur ; F. Ferrie, Auteur ; J. Macfarlane, Auteur Année de publication : 2012 Article en page(s) : pp 1129 - 1140 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Lasergrammétrie
[Termes IGN] détection d'objet
[Termes IGN] données lidar
[Termes IGN] données localisées 3D
[Termes IGN] façade
[Termes IGN] fenêtre (bâtiment)
[Termes IGN] semis de pointsRésumé : (Auteur) Mobile lidar (light detection and ranging) data collection is a rapidly emerging technology in which multiple georeferenced sensors (e.g., laser scanners, cameras) are mounted on a moving vehicle to collect real world data. The photorealistic modeling of large-scale real world scenes such as urban environments has become increasingly interesting to the vision, graphics, and photogrammetry communities. In this paper, we present an automatic approach to window and facade detection from mobile lidar data. The proposed method combines bottom-up with top-down strategies to extract facade planes from noisy lidar point clouds. The window detection is achieved through a two-step approach: potential window point detection and window localization. The facade pattern is automatically inferred to enhance the robustness of the window detection. Experimental results on six datasets result in 71.2 percent and 88.9 percent in the first two datasets, 100 percent for the rest four datasets in terms of completeness rate, and 100 percent correctness rate for all the tested datasets, which demonstrate the effectiveness of the proposed solution for planar facades with rectilinear windows. The application potential includes generation of building facade models with street-level details and texture synthesis for producing realistic occlusion-free facade texture. Numéro de notice : A2012-586 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.14358/PERS.78.11.1129 En ligne : https://doi.org/10.14358/PERS.78.11.1129 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32032
in Photogrammetric Engineering & Remote Sensing, PERS > vol 78 n° 11 (November 2012) . - pp 1129 - 1140[article]On the detection of systematic errors in terrestrial laser scanning data / J. Wang in Journal of applied geodesy, vol 6 n° 3-4 (November 2012)
[article]
Titre : On the detection of systematic errors in terrestrial laser scanning data Type de document : Article/Communication Auteurs : J. Wang, Auteur ; H. Kutterer, Auteur ; X. Fang, Auteur Année de publication : 2012 Article en page(s) : pp 187 - 192 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Lasergrammétrie
[Termes IGN] algorithme ICP
[Termes IGN] barrage
[Termes IGN] données lidar
[Termes IGN] données localisées 3D
[Termes IGN] erreur systématique
[Termes IGN] lasergrammétrie
[Termes IGN] modèle de Gauss-Helmert
[Termes IGN] segmentation d'image
[Termes IGN] télémétrie laser sur satelliteRésumé : (Auteur) Quality descriptions are parts of the key tasks of geodetic data processing. Systematic errors should be detected and avoided in order to insure the high quality standards required by structural monitoring. In this study, the iterative closest point (ICP) method was invested to detect systematic errors in two overlapping data sets. There are three steps to process the systematic errors: firstly, one of the data sets was transformed to a reference system by the introduction of the Gauss–Helmert (GH) model. Secondly, quadratic form estimation and segmentation methods are proposed to guarantee the overlapping data sets. Thirdly, the ICP method was employed for a finer registration and detecting the systematic errors. A case study was casted in which a dam surface in Germany was scanned by terrestrial laser scanning (TLS) technology. The results indicated that with the conjugation of ICP algorithm the accuracy of the data sets was improved approximately by 1.6 mm. Numéro de notice : A2012-598 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.1515/jag-2012-0025 En ligne : http://www.degruyter.com/view/j/jag.2012.6.issue-3-4/jag-2012-0025/jag-2012-0025 [...] Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32044
in Journal of applied geodesy > vol 6 n° 3-4 (November 2012) . - pp 187 - 192[article]Où en est-on de la 3D ? / Anonyme in Géomatique expert, n° 89 (01/11/2012)
[article]
Titre : Où en est-on de la 3D ? Type de document : Article/Communication Auteurs : Anonyme, Auteur Année de publication : 2012 Article en page(s) : pp 20 - 26 Langues : Français (fre) Descripteur : [Vedettes matières IGN] Géomatique
[Termes IGN] charte d'éthique 3D
[Termes IGN] communauté urbaine
[Termes IGN] données lidar
[Termes IGN] données localisées 3D
[Termes IGN] Genève
[Termes IGN] image aérienne à axe vertical
[Termes IGN] Lyon
[Termes IGN] StéréopolisRésumé : (Auteur) A l'occasion d'une exposition consacrée au passage de son SIG de la 2D vers la 3D, la communauté urbaine de Lyon "Grand Lyon" organisait une conférence, en partenariat avec le Comité d'éthique de la 3D, destinée à faire le point sur les usages de la troisième dimension, dans leur dimension géomatique et stratégique. Numéro de notice : A2012-555 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32001
in Géomatique expert > n° 89 (01/11/2012) . - pp 20 - 26[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 265-2012061 RAB Revue Centre de documentation En réserve L003 Disponible IFN-001-P001384 PER Revue Nogent-sur-Vernisson Salle périodiques Exclu du prêt Stereopolis 2: A multi-purpose and multi-sensor 3D mobile mapping system for street visualisation and 3D metrology / Nicolas Paparoditis in Revue Française de Photogrammétrie et de Télédétection, n° 200 (Novembre 2012)
[article]
Titre : Stereopolis 2: A multi-purpose and multi-sensor 3D mobile mapping system for street visualisation and 3D metrology Type de document : Article/Communication Auteurs : Nicolas Paparoditis , Auteur ; Jean-Pierre Papelard , Auteur ; Bertrand Cannelle , Auteur ; Alexandre Devaux , Auteur ; et al., Auteur Année de publication : 2012 Article en page(s) : pp 69 - 79 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Lasergrammétrie
[Termes IGN] chambre à grand format
[Termes IGN] données localisées 3D
[Termes IGN] données multicapteurs
[Termes IGN] étalonnage de capteur (imagerie)
[Termes IGN] lasergrammétrie
[Termes IGN] stéréoscopie
[Termes IGN] système de numérisation mobileRésumé : (Auteur) In this paper, we present a hybrid image/laser multi-sensor mobile mapping system allowing to capture a spatial data infrastructure which is compliant with several applications ranging from multimedia immersive visualisation to 3D metrology across the web. We detail the design of the system, its sensors, its architecture, and its calibration. We also present a web-based service on the acquired data that allows immersive street navigations but also 3D plotting tools that can allow a client to enrich his own databases. We also address some data processing issues related to privacy, i.e. pedestrian and car plate detection and blurring, that are mandatory for the dissemination of data through web-based consumer applications. Numéro de notice : A2012-569 Affiliation des auteurs : MATIS (1993-2011) Thématique : IMAGERIE Nature : Article DOI : 10.52638/rfpt.2012.63 Date de publication en ligne : 19/04/2014 En ligne : https://doi.org/10.52638/rfpt.2012.63 Format de la ressource électronique : URL Article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32015
in Revue Française de Photogrammétrie et de Télédétection > n° 200 (Novembre 2012) . - pp 69 - 79[article]The electronically steerable flash Lidar : A full waveform scanning system for topographic and ecosystem structure applications / H. Duong in IEEE Transactions on geoscience and remote sensing, vol 50 n° 11 Tome 2 (November 2012)
[article]
Titre : The electronically steerable flash Lidar : A full waveform scanning system for topographic and ecosystem structure applications Type de document : Article/Communication Auteurs : H. Duong, Auteur Année de publication : 2012 Article en page(s) : pp 4809 - 4820 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Lasergrammétrie
[Termes IGN] Colorado (Etats-Unis)
[Termes IGN] couvert forestier
[Termes IGN] données lidar
[Termes IGN] données localisées 3D
[Termes IGN] forêt tempérée
[Termes IGN] forêt tropicale
[Termes IGN] forme d'onde pleine
[Termes IGN] hauteur de la végétation
[Termes IGN] Lidar
[Termes IGN] Texas (Etats-Unis)Résumé : (Auteur) The electronically steerable flash lidar (ESFL) is a waveform lidar sensor that incorporates two advances relevant to the design of future spaceborne lidar sensors. The first is a nonmechanical scanner that splits a single incoming beam into a variable number of output beams that can be aligned independently across track; the transmitted beam pattern can be changed up to 60 Hz. The second is a flash focal plane array (FFPA) capable of recording waveforms simultaneously from a 128 x 128 pixel grid with individual footprints spread over multiple pixels. In this paper, the incoming beam was used to illuminate eight 8.4-m footprints which were imaged simultaneously on 12 x 12 pixel subsets of the FFPA. The FFPA digitizes waveforms at a vertical resolution of 75 cm over 41 vertical bins to create waveforms of 30.75-m depth. Multiple waveforms obtained using range-gating were combined for these analyses. ESFL data were collected at Manitou Experimental Forest (MEF), located in the Pikes Peak National Forest, Colorado, USA and the Stephen F. Austin Experimental Forest (AEF), located in the Angelina Forest, Nacogdoches, TX. We evaluated the use of individual pixel-level and aggregated footprint-level waveforms and alternate approaches to define the extent of each footprint in the focal plane array. Using discrete return lidar data as a reference, we evaluated the ability of ESFL lidar to estimate canopy height and compared the two sensors' rates of penetration to the terrain surface. We found the footprint-level waveforms were better suited for use with existing waveform processing techniques, although techniques for processing at the pixel-level appear feasible. Relationships between height estimates from each lidar data set were most closely related when footprint-level ESFL waveforms were calculated after removing pixels that had less than 50% of the maximum energy within that footprint. Regressions between ESFL and reference lidar data estimates - f height explained 84% (AEF) and 85% (MEF) of variance; this study could not say definitively which method yielded the more accurate estimate of height. Numéro de notice : A2012-593 Affiliation des auteurs : non IGN Thématique : FORET/IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1109/TGRS.2012.2193588 Date de publication en ligne : 16/05/2012 En ligne : https://doi.org/10.1109/TGRS.2012.2193588 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32039
in IEEE Transactions on geoscience and remote sensing > vol 50 n° 11 Tome 2 (November 2012) . - pp 4809 - 4820[article]Réservation
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