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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]Grouping of Persistent Scatterers in high-resolution SAR data of urban scenes / A. Schunert in ISPRS Journal of photogrammetry and remote sensing, vol 73 (September 2012)
[article]
Titre : Grouping of Persistent Scatterers in high-resolution SAR data of urban scenes Type de document : Article/Communication Auteurs : A. Schunert, Auteur ; Uwe Soergel, Auteur Année de publication : 2012 Article en page(s) : pp 80 - 79 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image radar et applications
[Termes IGN] coin réflecteur
[Termes IGN] façade
[Termes IGN] fenêtre (bâtiment)
[Termes IGN] image radar moirée
[Termes IGN] image TerraSAR-X
[Termes IGN] interféromètrie par radar à antenne synthétique
[Termes IGN] zone urbaineRésumé : (Auteur) Persistent Scatterer Interferometry (PSI) is a technique to simultaneously estimate surface deformation and 3D structure from stacks of SAR images. It was proposed first about one decade ago to monitor preferably urban areas, where in general the highest numbers of PS are found. At that time no high-resolution satellite SAR data were available. Instead, for example, stacks of ERS imagery were used providing ground range resolution of about 25 m. In data of such kind only the strongest PS can be detected, which are usually caused by corner reflectors built by orthogonal building and road planes of considerable size, whereas smaller structures causing weaker ones signal are averaged by clutter or mutually interfere with others in the same resolution cell. Thus, if any, only a few or even just one single PS are found per building. The advent of a new sensor generation of systems like TerraSAR-X and COSMO-Skymed in 2007 led to a significant improvement of spatial resolution of about one order of magnitude. This comes along with a dramatic rise of PS density: In some cases tens to hundreds are detected at large buildings, which offers the possibility to monitor even individual urban objects. In addition, especially at building façades the distribution of those PS is often quite regular. A reason for that is the usually rectilinear arrangement of façade structures inducing PS like windows or balconies. Those patterns contain a lot of information about the objects under investigation, which is mostly ignored in current PSI processing schemes. For example, consider a regular structure of windows on a certain façade of a multi-story building. Assuming the same kind of structure generates one single PS at each window, the phase centers of all scatterers caused by windows of each floor share the same height. This means, we may benefit from such kind of redundancy, for instance, to improve the height estimate by averaging over PS having the same elevation. In this work, we first discuss the regular appearance of PS at urban façades for an urban test scene in TerraSAR-X spotlight mode data. Then, we show how PS analysis could benefit by exploitation of the redundancy due to repetitive patterns of man-made objects. Finally, we propose a PS grouping scheme based on a production system and discuss first results achieved for the test area. Numéro de notice : A2012-546 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.isprsjprs.2012.04.002 En ligne : https://doi.org/10.1016/j.isprsjprs.2012.04.002 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=31992
in ISPRS Journal of photogrammetry and remote sensing > vol 73 (September 2012) . - pp 80 - 79[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 081-2012071 SL Revue Centre de documentation Revues en salle Disponible Reconnaissance de bâtiments et localisation de photographies au moyen d'un descripteur de texture / W. Suleiman in Revue internationale de géomatique, vol 22 n° 3 (septembre - novembre 2012)
[article]
Titre : Reconnaissance de bâtiments et localisation de photographies au moyen d'un descripteur de texture Type de document : Article/Communication Auteurs : W. Suleiman, Auteur ; E. Favier, Auteur ; Thierry Joliveau, Auteur Année de publication : 2012 Article en page(s) : pp 439 - 459 Note générale : Bibliographie Langues : Français (fre) Descripteur : [Vedettes matières IGN] Applications photogrammétriques
[Termes IGN] analyse texturale
[Termes IGN] base de données localisées 3D
[Termes IGN] détection du bâti
[Termes IGN] façade
[Termes IGN] géolocalisation
[Termes IGN] orientation d'image
[Termes IGN] position
[Termes IGN] réalité augmentée
[Termes IGN] SIG 3D
[Termes IGN] texture d'imageRésumé : (Auteur) La reconnaissance automatique des bâtiments est une étape essentielle pour la réalité augmentée et un outil possible pour la géolocalisation d'une prise de vue. Les recherches dans ce domaine n'utilisent pas la localisation par contenu de l'image. Cet article présente une méthodologie pour l'enrichissement d'une base de données urbaine SIG grâce à un descripteur de texture de façade calculé sur des images de référence. Cet indicateur est ensuite utilisé pour retrouver ce bâtiment dans une nouvelle image et le localiser dans une base de données SIG 3D afin d'estimer sa position et son orientation dans le repère de l'appareil photographique qui a pris le cliché. La qualité des résultats obtenus fait l'objet d'une discussion. Numéro de notice : A2012-533 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.3166/rig.22.439-459 En ligne : https://doi.org/10.3166/rig.22.439-459 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=31979
in Revue internationale de géomatique > vol 22 n° 3 (septembre - novembre 2012) . - pp 439 - 459[article]Exemplaires(2)
Code-barres Cote Support Localisation Section Disponibilité 047-2012031 SL Revue Centre de documentation Revues en salle Disponible 047-2012032 SL Revue Centre de documentation Revues en salle Disponible Streamed vertical rectangle detection in terrestrial laser scans for facade database / Jérôme Demantké in ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, vol I-3 (2012)
[article]
Titre : Streamed vertical rectangle detection in terrestrial laser scans for facade database Type de document : Article/Communication Auteurs : Jérôme Demantké , Auteur ; Bruno Vallet , Auteur ; Nicolas Paparoditis , Auteur Année de publication : 2012 Article en page(s) : pp 99 - 104 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image optique
[Termes IGN] chevauchement
[Termes IGN] détection d'objet
[Termes IGN] échantillonnage de données
[Termes IGN] façade
[Termes IGN] fusion d'images
[Termes IGN] Ransac (algorithme)
[Termes IGN] reconnaissance de formesRésumé : (auteur) A reliable and accurate facade database would be a major asset in applications such as localization of autonomous vehicles, registration and fine building modeling. Mobile mapping devices now provide the data required to create such a database, but efficient methods should be designed in order to tackle the enormous amount of data collected by such means (a million point per second for hours of acquisition). Another important limitation is the presence of numerous objects in urban scenes of many different types. This paper proposes a method that overcomes these two issues:
• The facade detection algorithm is streamed : the data is processed in the order it was acquired. More precisely, the input data is split into overlapping blocks which are analysed in turn to extract facade parts. Close overlapping parts are then merged in order
• The geometry of the neighborhood of each point is analysed to define a probability that the point belongs to a vertical planar patch. This probability is then injected in a RANdom SAmple Consensus (RANSAC) algorithm both in the sampling step and in the hypothesis validation, in order to favour the most reliable candidates. This ensures much more robustness against outliers during the facade detection.
This way, the main vertical rectangles are detected without any prior knowledge about the data. The only assumptions are that the facades are roughly planar and vertical. The method has been successfully tested on a large dataset in Paris. The facades are detected despite the presence of trees occluding large areas of some facades. The robustness and accuracy of the detected facade rectangles makes them useful for localization applications and for registration of other scans of the same city or of entire city models.Numéro de notice : A2012-763 Affiliation des auteurs : LASTIG MATIS (2012-2019) Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.5194/isprsannals-I-3-99-2012 Date de publication en ligne : 20/07/2012 En ligne : https://doi.org/10.5194/isprsannals-I-3-99-2012 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=101275
in ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences > vol I-3 (2012) . - pp 99 - 104[article]Creating 3D models of major cities, improving speed and cost-efficiency / A. Yakubenko in GIM international, vol 26 n° 7 (July 2012)
[article]
Titre : Creating 3D models of major cities, improving speed and cost-efficiency Type de document : Article/Communication Auteurs : A. Yakubenko, Auteur ; A. Velizhev, Auteur ; V. Shemarov, Auteur Année de publication : 2012 Article en page(s) : pp 24 - 27 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Photogrammétrie numérique
[Termes IGN] bâtiment
[Termes IGN] coût
[Termes IGN] façade
[Termes IGN] image terrestre
[Termes IGN] modèle 3D de l'espace urbain
[Termes IGN] Moscou
[Termes IGN] reconstruction 3D du bâti
[Termes IGN] texture d'imageRésumé : (Editeur) Surprisingly, the idea of a web-based 3D map of Moscow came to a Russian real estate developer in a dream in early 2001. Since the quality of airborne data was insufficient to create photorealistic 3D models, terrestrial imagery would be used - and with Russia's capital city featuring more than 150,000 buildings, the project was ambitious to say the least. This article describes the team's approach to surveying such a complex city environment and the new techniques developed for producing photorealistic 3D models of buildings quickly and cost-efficiently. Numéro de notice : A2012-317 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=31763
in GIM international > vol 26 n° 7 (July 2012) . - pp 24 - 27[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 061-2012071 RAB Revue Centre de documentation En réserve L003 Disponible A geometry and texture coupled flexible generalization of urban building models / M. Zhang in ISPRS Journal of photogrammetry and remote sensing, vol 70 (June 2012)PermalinkQuality assessment of geometric façade models reconstructed from TLS data / Tania Landes in Photogrammetric record, vol 27 n° 138 (June - August 2012)PermalinkAttributierte Grammatiken zur Rekonstruktion und Interpretation von Fassaden / J. Schmidtwilken (2012)PermalinkÉtude préalable aux relevés architecturaux par photogrammétrie de l’Alexandrie du XIXe et XXe [19e et 20e] siècle / Mehdi Daakir (2012)PermalinkSegmentation d'images de façades de bâtiments acquises d'un point de vue terrestre / Jean-Pascal Burochin (2012)PermalinkModélisation de façades par analyse conjointe d'images terrestres et de données laser / Antoine Pinte in Revue Française de Photogrammétrie et de Télédétection, n° 194 (Mai 2011)PermalinkJournées de la recherche [IGN] / Anonyme in Géomatique expert, n° 79 (01/03/2011)PermalinkContributions to the 3D city modeling. 3D polyhedral building model reconstruction from aerial images & 3D facade modeling from terrestrial 3D point cloud and images / Karim Hammoudi (2011)PermalinkPermalinkGenerating virtual 3D model of urban street facades by fusing terrestrial multi-source data / Karim Hammoudi (2011)Permalink