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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]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 081-2012071 SL Revue Centre de documentation Revues en salle Disponible Lidar strip adjustment with automatically reconstructed roof shapes / M. Rentsch in Photogrammetric record, vol 27 n° 139 (September - November 2012)
[article]
Titre : Lidar strip adjustment with automatically reconstructed roof shapes Type de document : Article/Communication Auteurs : M. Rentsch, Auteur ; Peter Krzystek, Auteur Année de publication : 2012 Article en page(s) : pp 272 - 292 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Lasergrammétrie
[Termes IGN] compensation par bloc
[Termes IGN] densité des points
[Termes IGN] données lidar
[Termes IGN] erreur systématique
[Termes IGN] étalonnage d'instrument
[Termes IGN] lidar à retour d'onde complète
[Termes IGN] ligne de visée
[Termes IGN] photogrammétrie terrestre
[Termes IGN] points homologues
[Termes IGN] reconstruction 3D du bâti
[Termes IGN] semis de points
[Termes IGN] toitRésumé : (Auteur) In recent years, the performance of lidar systems has steadily improved due to an increase in the achievable point density. The main error sources affecting the quality of lidar-derived secondary products such as digital terrain models (DTMs) and digital surface models (DSMs) are the result of systematic errors coming from insufficient boresight calibration. The effects of boresight misalignments are visually recognised as discrepancies of the laser point clouds at selected objects (such as building roofs) in overlapping areas of neighbouring lidar strips. In this work, a strip adjustment method is presented that corrects the systematic errors of the laser point cloud using five strip parameters (three shifts plus two angular corrections for heading and roll). The strip adjustment procedure uses 2D and 3D tie elements and takes advantage of a new 3D measurement technique applied to building roofs. The strip adjustment method is applied to three different datasets, consisting of conventional first/last pulse and full-waveform data. The results show that systematic discrepancies are typical for datasets that have already been processed by the flight companies. These errors can be reduced by more than 70% by applying the new strip adjustment approach. Preliminary investigations indicate that a higher laser point density and the inclusion of intensity and pulse width within full-waveform lidar data lead to better results. Numéro de notice : A2012-462 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.1111/j.1477-9730.2012.00690.x Date de publication en ligne : 18/09/2012 En ligne : https://doi.org/10.1111/j.1477-9730.2012.00690.x Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=31908
in Photogrammetric record > vol 27 n° 139 (September - November 2012) . - pp 272 - 292[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 106-2012031 RAB Revue Centre de documentation En réserve L003 Disponible A multi-resolution hybrid approach for building model reconstruction from lidar data / M. Satari in Photogrammetric record, vol 27 n° 139 (September - November 2012)
[article]
Titre : A multi-resolution hybrid approach for building model reconstruction from lidar data Type de document : Article/Communication Auteurs : M. Satari, Auteur ; F. Samadzadegan, Auteur ; A. Azizi, Auteur ; Hans-Gerd Maas, Auteur Année de publication : 2012 Article en page(s) : pp 330 - 359 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Lasergrammétrie
[Termes IGN] architecture orientée modèle
[Termes IGN] classification floue
[Termes IGN] données lidar
[Termes IGN] données localisées 3D
[Termes IGN] photogrammétrie terrestre
[Termes IGN] reconstruction 3D du bâti
[Termes IGN] semis de points
[Termes IGN] séparateur à vaste marge
[Termes IGN] toit
[Termes IGN] transformation de HoughRésumé : (Auteur) In this paper, a multi-resolution hybrid approach is proposed for the reconstruction of building models from point clouds of lidar data. The detection of the main roof planes is obtained through a polyhedral approach, whereas the models of appended parts, in this case the dormers, are reconstructed by adopting a model-driven approach. Clustering of the roof points in a multi-resolution space is based on the fuzzy c-mean in the polyhedral section of this hybrid approach. A weighted plane algorithm is developed in order to determine the planes of each cluster. The verification of planes between multi-resolution spaces adopts a method based on a least squares support vector machine that, in the model-driven section, is applied for detecting types of projecting structures. A method is then developed to determine the dormer models’ parameters. Finally, the detection of boundary roof lines is obtained through a customised fuzzy Hough transform. The paper outlines the concept of the algorithms and the processing chain, and illustrates the results obtained by applying the technique to buildings of different complexities. Numéro de notice : A2012-465 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.1111/j.1477-9730.2012.00688.x Date de publication en ligne : 18/09/2012 En ligne : https://doi.org/10.1111/j.1477-9730.2012.00688.x Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=31911
in Photogrammetric record > vol 27 n° 139 (September - November 2012) . - pp 330 - 359[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 106-2012031 RAB Revue Centre de documentation En réserve L003 Disponible Photogrammetric control points from airborne laser scanner data / Q. Dalmolin in Revue Française de Photogrammétrie et de Télédétection, n° 198 - 199 (Septembre 2012)
[article]
Titre : Photogrammetric control points from airborne laser scanner data Type de document : Article/Communication Auteurs : Q. Dalmolin, Auteur ; J.A. Fierro Sanhueza, Auteur ; E. Aparecido Mitishita, Auteur ; D. Rodrigues Dos Santos, Auteur Année de publication : 2012 Article en page(s) : pp 39 - 45 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications photogrammétriques
[Termes IGN] aérotriangulation numérique
[Termes IGN] compensation par faisceaux
[Termes IGN] données lidar
[Termes IGN] données localisées 3D
[Termes IGN] extraction semi-automatique
[Termes IGN] image aérienne à axe vertical
[Termes IGN] lasergrammétrie
[Termes IGN] point d'appui
[Termes IGN] point de vérification
[Termes IGN] toit
[Termes IGN] triangulation de DelaunayRésumé : (Auteur) This paper offers a methodology for the semi-automatic extraction of control points for phototriangulation by using laser intensity images. The control points are determined by the intersection of three or more plane features which make up the roof of houses or building or constructions in general. The features under study are selected visually in aerial photos of constructions in which there are three or more sloped roofs presenting concurrent plane features. These constructions are identified in laser intensity image, and the plane features which define their roofs are extracted and individually adjusted from a group of points which result from the survey undertaken with airborne laser scanner. Control points are determined through the intersection of roof planes of each construction previously adjusted. By using this technique, it is possible to use the points obtained from plane feature intersection in a computational routine, thus replacing the ones obtained in the field. The airborne points were processed in a semi-automated way to rebuild the plane features of building roofs. Thus, they were identified in laser intensity image and extracted from Delaunay's triangulation. Finally, the analysis of normal vectors of the generated triangulation is realized. The methodology was tested by phototriangulation with bundle adjustment and supported by the points obtained from laser scanner and by checking points the ones pre-signalized and which where obtained from the field with GPS help. A photogrammetric block formed by six aerial photos obtained by non-metric digital camera was used for tests. The results were analysed and compared, and the methodology used was recommended. Numéro de notice : A2012-422 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.52638/rfpt.2012.70 Date de publication en ligne : 21/04/2014 En ligne : https://doi.org/10.52638/rfpt.2012.70 Format de la ressource électronique : URL Article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=31868
in Revue Française de Photogrammétrie et de Télédétection > n° 198 - 199 (Septembre 2012) . - pp 39 - 45[article]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]Réservation
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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)PermalinkCreating 3D models of major cities, improving speed and cost-efficiency / A. Yakubenko in GIM international, vol 26 n° 7 (July 2012)PermalinkVerification of 2D building outlines using oblique airborne images / A. Nyaruhuma in ISPRS Journal of photogrammetry and remote sensing, vol 71 (July 2012)PermalinkAn interactive 3-Dimensional database applied to the conservation of a painted chapel / Jean-Marc Vallet in International Journal of Heritage in the Digital Era, vol 1 n° 2 (June 2012)PermalinkFlight planning and orthophotos / Y. Raizman in GIM international, vol 26 n° 6 (June 2012)PermalinkA 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)PermalinkCadastre solaire : recherche systématique des toits les plus appropriés pour les installations photovoltaïques / D. Klauser in Géomatique suisse, vol 110 n° 5 (01/05/2012)PermalinkDes données 3D pour les architectes, urbanistes et paysagistes sur le Canton de Genève / C. Minery in Géomatique suisse, vol 110 n° 5 (01/05/2012)PermalinkAccuracy evaluation for automated optical indoor positioning using a camera phone / V. Händler in ZFV, Zeitschrift für Geodäsie, Geoinformation und Landmanagement, vol 137 n° 2 (01/03/2012)Permalink