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Ajouter le résultat dans votre panierAn integrated model to estimate the accuracy of digital orthoimages from high resolution satellite imagery / F. Aguilar in Revue Française de Photogrammétrie et de Télédétection, n° 184 (Décembre 2006)
[article]
Titre : An integrated model to estimate the accuracy of digital orthoimages from high resolution satellite imagery Type de document : Article/Communication Auteurs : F. Aguilar, Auteur ; M. Aguilar, Auteur ; F. Carvajal, Auteur ; F. Aguera, Auteur Année de publication : 2006 Conférence : ISPRS 2006, Commission 1 Symposium, From sensors to imagery 03/07/2006 06/07/2006 Champs-sur-Marne [Paris Marne-la-Vallée] France OA ISPRS Archives Article en page(s) : pp 11 - 16 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image optique
[Termes IGN] Almeria
[Termes IGN] compensation par faisceaux
[Termes IGN] erreur de mesure
[Termes IGN] image à très haute résolution
[Termes IGN] image Quickbird
[Termes IGN] modèle numérique de surface
[Termes IGN] orientation du capteur
[Termes IGN] OrthoEngine
[Termes IGN] orthoimage
[Termes IGN] point d'appui
[Termes IGN] point de vérification
[Termes IGN] précision géométrique (imagerie)Résumé : (Auteur) In this work, a theoretical-empirical model has been developed for the modelling of the local geometric accuracy of digital orthoimages from panchromatic QuickBird Very High Resolution Satellite Imagery (VHRSI). The empirical component integrates the error of sensor orientation and its propagation to the orthoimage generation process. The theoretical component, mainly a geometrical study from QuickBird Image Metadata File, seeks to model the propagation of DEM error throughout the orthorectificacion process in addition to the previous errors of the bundle adjustment. For the goal of model developing and calibration, a panchromatic QuickBird Basic Imagery was acquired on 19 December 2004, registering a mean collected GSD of 0.62 m, off-nadir view angle of 8.4° and an azimuth and elevation angle of the satellite with respect to the centre of the image of 123.3 and 80.9° respectively. The QuickBird image employed covered an area of 17 x 18 Km over the district of Nijar, located at the North-East of Almeria city, Spain. It was centred on the UTM coordinates European Datum ED50 (easting and northing) of 577,848 and 4,087,277 m. The Toutin's 3D physical model was the selected method to compute the bundle adjustment and so to carry out the sensor orientation using PCI Geomatica OrthoEngine software v. 9.1.7. On this score, 3D coordinates of 124 ground points were measured by means of high precision differential GPS techniques. From the whole set of ground points, a sub-set of 45 ones uniformly distributed was selected for the sensor orientation (GCPs), whereas the remaining 79 were used as independent checkpoints (ICPs) to assess the performance of the developed model regarding to the average error of the final orthoimages. In as much to the results, the empirical component, which takes into account the effect of pointing error and number and accuracy of GCPs on sensor orientation, presented an acceptable fitting to the experimental data, with a regression coefficient R2 = 0.932. The theoretical component also offered good results, observing like the proposed model reproduces with reasonable accuracy the statistical behaviour of the 2D orthoimage errors measured at the 79 ground points checked. The findings obtained in this work could be used as a guide for the selection of appropriate operational parameters in projects related to digital cartography production and updating from QuickBird imagery. Copyright SFPT Numéro de notice : A2006-632 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : sans En ligne : https://www.isprs.org/proceedings/XXXVI/part1/Papers/PS1-09.pdf Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28355
in Revue Française de Photogrammétrie et de Télédétection > n° 184 (Décembre 2006) . - pp 11 - 16[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 018-06041 RAB Revue Centre de documentation En réserve L003 Disponible Analysis of rigorous orientation models for pushbroom sensors: applications with Quickbird / M. Crespi in Revue Française de Photogrammétrie et de Télédétection, n° 184 (Décembre 2006)
[article]
Titre : Analysis of rigorous orientation models for pushbroom sensors: applications with Quickbird Type de document : Article/Communication Auteurs : M. Crespi, Auteur ; Francesca Giannone, Auteur ; Daniela Poli, Auteur Année de publication : 2006 Conférence : ISPRS 2006, Commission 1 Symposium, From sensors to imagery 03/07/2006 06/07/2006 Champs-sur-Marne [Paris Marne-la-Vallée] France OA ISPRS Archives Article en page(s) : pp 23 - 28 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Photogrammétrie numérique
[Termes IGN] capteur en peigne
[Termes IGN] colinéarité
[Termes IGN] compensation par faisceaux
[Termes IGN] couple stéréoscopique
[Termes IGN] élément d'orientation externe
[Termes IGN] géométrie de l'image
[Termes IGN] géoréférencement direct
[Termes IGN] image EROS
[Termes IGN] image isolée
[Termes IGN] image Quickbird
[Termes IGN] modèle numérique de terrain
[Termes IGN] orbitographie par GNSS
[Termes IGN] orientation du capteur
[Termes IGN] orientation externe
[Termes IGN] orientation interne
[Termes IGN] OrthoEngine
[Termes IGN] orthorectification
[Termes IGN] point d'appuiRésumé : (Auteur) The correct georeferencing of remote sensing images is a fundamental task in the photogrammetric processing for orthoimages and DEM generation and for feature extraction. In this paper, we focus on the georeferencing of pushbroom sensors with rigorous models, that is, approaches that are based on the photogrammetric collinearity equations and describe the exact acquisition geometry of the sensors. By solving a bundle adjustment, the sensor external orientation and additional geometric parameters describing the internal orientation are estimated. We tested two rigorous models developed in academic groups for the georeferencing of a stereopair from QuickBird. The first model (M1) has been implemented at the University La Sapienza, Rome. It is specifically designed for the orthorectification of pushbroom sensors carried on satellite platforms with asynchronous acquisition mode, like EROS-A and QuickBird. The model, implemented in the software SISAR, reconstructs of the orbital segment during the image acquisition through the knowledge of Keplerian orbital parameters, the sensor attitude, internal orientation and the self-calibration parameters. The second model (M2) is a rigorous sensor model for pushbroom linear array sensors, carried on airborne or spaceborne platforms. It estimates the parameters modelling the sensor internal and external orientation through a bundle adjustment, using a suitable number of ground control points. Our research included the orientation of the single images with rigorous model M1, the orientation of the stereo pair with rigorous model M2 and the comparison of the results with a rigorous model contained in commercial software (PCI OrthoEngine). The results demonstrate that by using rigorous models it is possible to achieve RMSE smaller than 1 pixel in the GPs if a sufficient number of GCPs are used. Copyright SFPT Numéro de notice : A2006-633 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueNat DOI : sans En ligne : https://www.isprs.org/proceedings/XXXVI/part1/Papers/T02-07.pdf Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28356
in Revue Française de Photogrammétrie et de Télédétection > n° 184 (Décembre 2006) . - pp 23 - 28[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 018-06041 RAB Revue Centre de documentation En réserve L003 Disponible Analysis of artifacts in sub-pixel remote sensing image registration / Jordi Inglada in Revue Française de Photogrammétrie et de Télédétection, n° 184 (Décembre 2006)
[article]
Titre : Analysis of artifacts in sub-pixel remote sensing image registration Type de document : Article/Communication Auteurs : Jordi Inglada, Auteur ; V. Muron, Auteur ; D. Pichard, Auteur ; T. Feuvrier, Auteur Année de publication : 2006 Conférence : ISPRS 2006, Commission 1 Symposium, From sensors to imagery 03/07/2006 06/07/2006 Champs-sur-Marne [Paris Marne-la-Vallée] France OA ISPRS Archives Article en page(s) : pp 29 - 34 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Photogrammétrie numérique
[Termes IGN] artefact
[Termes IGN] interpolation
[Termes IGN] précision infrapixellaire
[Termes IGN] rééchantillonnage
[Termes IGN] superposition d'imagesRésumé : (Auteur) Sub-pixel accuracy image registration is needed for many applications. In order to achieve this accuracy, one uses image re-sampling. Since the image interpolation step is performed a high number of times, approximate interpolations are performed in order to reduce computation cost. In this paper we study the artifacts introduced in the disparity map estimation by the approximate interpolation and propose strategies in order to reduce them. Copyright SFPT Numéro de notice : A2006-634 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueNat DOI : sans En ligne : https://www.isprs.org/proceedings/XXXVI/part1/Papers/T02-08.pdf Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28357
in Revue Française de Photogrammétrie et de Télédétection > n° 184 (Décembre 2006) . - pp 29 - 34[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 018-06041 RAB Revue Centre de documentation En réserve L003 Disponible Pros and cons of the orientation of very high resolution optical space images / Karsten Jacobsen in Revue Française de Photogrammétrie et de Télédétection, n° 184 (Décembre 2006)
[article]
Titre : Pros and cons of the orientation of very high resolution optical space images Type de document : Article/Communication Auteurs : Karsten Jacobsen, Auteur Année de publication : 2006 Conférence : ISPRS 2006, Commission 1 Symposium, From sensors to imagery 03/07/2006 06/07/2006 Champs-sur-Marne [Paris Marne-la-Vallée] France OA ISPRS Archives Article en page(s) : pp 41 - 47 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s)
[Termes IGN] analyse comparative
[Termes IGN] GPS-INS
[Termes IGN] image à résolution métrique
[Termes IGN] image Ikonos
[Termes IGN] image optique
[Termes IGN] image ORBVIEW
[Termes IGN] image Quickbird
[Termes IGN] modèle par fonctions rationnelles
[Termes IGN] orientation du capteur
[Termes IGN] point d'appui
[Termes IGN] précision géométrique (imagerie)
[Termes IGN] transformation linéaire directeRésumé : (Auteur) Very high resolution optical space images are coming more and more into competition to classical aerial images making them more important for mapping projects. The orientation process of the dominating CCD-line scanner images taken from space is quite different from the orientation of perspective photos. Different image products like nearly original images and images projected to a plane with constant height are available, this requires corresponding orientation solutions. All optical satellites are equipped with direct sensor orientation based on a positioning system, gyros and star sensors, so they can estimate the orientation parameters. For IKONOS, QuickBird and OrbView-3, this can be made without control points with a standard deviation of the ground coordinates in the range of 10 m and better. The orientation information is available as view direction from the scene centre or start of scene or as ephemeris and as rational polynomial coefficients (RPCs). This allows the determination of the scene orientation by geometric reconstruction or bias corrected RPCs using control points. In addition approximations like 3D-affine transformation, direct linear transformation and terrain related RPCs are in use. The accuracy of the methods is compared in relation to the number and distribution of the control points and the limitations of the approximations are investigated. The approximations of the orientations by 3D affine transformation and direct linear transformation can only handle images projected to a plane with constant height like IKONOS and QuickBird or Standard. For original images they are not leading to acceptable accuracy. In any case they require more and three-dimensional well distributed control points. Copyright SFPT Numéro de notice : A2006-635 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : sans En ligne : https://www.isprs.org/proceedings/XXXVI/part1/Papers/T02-06.pdf Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28358
in Revue Française de Photogrammétrie et de Télédétection > n° 184 (Décembre 2006) . - pp 41 - 47[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 018-06041 RAB Revue Centre de documentation En réserve L003 Disponible Automatic 3D building reconstruction from DEMs: an application to Pleiades simulations / Florent Lafarge in Revue Française de Photogrammétrie et de Télédétection, n° 184 (Décembre 2006)
[article]
contenu dans ISPRS Commission 1 Symposium 2006, Paris, Marne-la-Vallée, 3-6 Juillet 2006: Des capteurs à l'imagerie, vol 1. Proceedings / Alain Baudoin (2006)
Titre : Automatic 3D building reconstruction from DEMs: an application to Pleiades simulations Type de document : Article/Communication Auteurs : Florent Lafarge, Auteur ; Xavier Descombes, Auteur ; Josiane Zerubia, Auteur ; Marc Pierrot-Deseilligny , Auteur Année de publication : 2006 Conférence : ISPRS 2006, Commission 1 Symposium, From sensors to imagery 03/07/2006 06/07/2006 Champs-sur-Marne [Paris Marne-la-Vallée] France OA ISPRS Archives Article en page(s) : pp 48 - 53 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Photogrammétrie numérique
[Termes IGN] détection du bâti
[Termes IGN] image à résolution submétrique
[Termes IGN] image Pléiades-HR
[Termes IGN] modèle 3D de l'espace urbain
[Termes IGN] modèle numérique de surface
[Termes IGN] précision décimétrique
[Termes IGN] processus ponctuel marqué
[Termes IGN] reconstruction 3D du bâti
[Termes IGN] simulation d'image
[Termes IGN] squelettisationRésumé : (Auteur) This paper is about an example of PLEIADES applications, the 3D building reconstruction. The future PLEIADES satellites are especially well adapted to deal with 3D building reconstruction through the sub-metric resolution of images and its stereoscopic characteristics. We propose a fully automatic 3D-city model of dense urban areas using a parametric approach. First, a Digital Elevation Model (DEM) is generated using an algorithm based on a maximum-flow formulation using three views. Then, building footprints are extracted from the DEM through an automatic method based on marked point processes : they are represented by an association of rectangles that we regularize by improving the connection of the neighboring rectangles and the facade discontinuity detection. Finally, a 3D-reconstruction method based on a skeleton process which allows to model the rooftops is proposed from the DEM and the building footprints. The different building heights constitute parameters which are estimated and then regularized by the "K-means" algorithm including an entropy term. Copyright SFPT Numéro de notice : A2006-636 Affiliation des auteurs : MATIS+Ext (1993-2011) Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueNat DOI : sans En ligne : https://www.isprs.org/proceedings/XXXVI/part1/Papers/T07-32.pdf Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28359
in Revue Française de Photogrammétrie et de Télédétection > n° 184 (Décembre 2006) . - pp 48 - 53[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 018-06041 RAB Revue Centre de documentation En réserve L003 Disponible Documents numériques
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Automatic 3D building ... - pdf editeur ISPRSAdobe Acrobat PDF An improved model for along track stereo sensors using rigorous orbit mechanics and navigation data / P. Michalis in Revue Française de Photogrammétrie et de Télédétection, n° 184 (Décembre 2006)
[article]
Titre : An improved model for along track stereo sensors using rigorous orbit mechanics and navigation data Type de document : Article/Communication Auteurs : P. Michalis, Auteur ; Ian J. Dowman, Auteur Année de publication : 2006 Conférence : ISPRS 2006, Commission 1 Symposium, From sensors to imagery 03/07/2006 06/07/2006 Champs-sur-Marne [Paris Marne-la-Vallée] France OA ISPRS Archives Article en page(s) : pp 54 - 59 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s)
[Termes IGN] auto-étalonnage
[Termes IGN] fauchée
[Termes IGN] image optique
[Termes IGN] image SPOT-HRS
[Termes IGN] modélisation géométrique de prise de vue
[Termes IGN] orbite
[Termes IGN] orientation externe
[Termes IGN] orientation interne
[Termes IGN] point d'appui
[Termes IGN] stéréoscopieRésumé : (Auteur) In this paper a major improvement of the generic rigorous sensor model for along track stereo optical satellite sensors which has been developed at UCL over the last three years is introduced, in detail. This improved model is implemented for satellite images where information of the orbit (state vectors) of the acquired satellite is provided, as is usual nowadays. The main achievement is that the precision of the solution is improved along with the accuracy, as the correlation between the exterior parameters is dramatically eliminated. Moreover, it is possible to carry out self calibration without correlation of the exterior orientation parameters with the interior orientation parameters (even for the calculation of the focal length). This model can be solved directly if the attitude information needed for a photogrammetric solution is given or after a calibration process using a small number of GCPs, in order to calculate missing information. The model is evaluated using SPOT5-HRS imagery. Copyright SFPT Numéro de notice : A2006-637 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueNat DOI : sans En ligne : https://www.isprs.org/proceedings/XXXVI/part1/Papers/PS1-11.pdf Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28360
in Revue Française de Photogrammétrie et de Télédétection > n° 184 (Décembre 2006) . - pp 54 - 59[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 018-06041 RAB Revue Centre de documentation En réserve L003 Disponible First assessments of Pleiades system potential for IGN-France image acquisition requirements / Jean-Philippe Cantou in Revue Française de Photogrammétrie et de Télédétection, n° 184 (Décembre 2006)
[article]
contenu dans ISPRS Commission 1 Symposium 2006, Paris, Marne-la-Vallée, 3-6 Juillet 2006: Des capteurs à l'imagerie, 2. Tome 2 / Alain Baudoin (2006)
Titre : First assessments of Pleiades system potential for IGN-France image acquisition requirements Type de document : Article/Communication Auteurs : Jean-Philippe Cantou , Auteur ; Hélène Buissart, Auteur Année de publication : 2006 Conférence : ISPRS 2006, Commission 1 Symposium, From sensors to imagery 03/07/2006 06/07/2006 Champs-sur-Marne [Paris Marne-la-Vallée] France OA ISPRS Archives Article en page(s) : pp 66 - 69 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s)
[Termes IGN] grande échelle
[Termes IGN] image à résolution submétrique
[Termes IGN] image optique
[Termes IGN] image Pléiades-HR
[Termes IGN] mise à jour cartographique
[Termes IGN] Pleiades-HR
[Termes IGN] qualité géométrique (image)
[Termes IGN] qualité radiométrique (image)
[Termes IGN] satellite agileRésumé : (Auteur) The Pleiades-HR system, of which the first platform of the constellation shall be ready for launch by early 2009, is the next generation of high resolution optical sensor satellites developed by CNES, the French space agency. With its ability to provide photogrammetrists with instantaneous colour image stereo-pairs of 20km swath and 70cm resolution acquired with B/H ratios ranging from 0.15 to 2, the very agile and precisely pointing Pleiades platforms should open in many countries a new era for the updating of high scale maps, by probably avoiding heavy aerial survey campaigns in many cases. In the framework of a cooperation agreement between CNES and IGN-France, designed to prepare an operational use of these images, several experimentations and simulations are being carried out, in order to verify the ability of the system to fulfil the technical and operational requirements of the map-making processes, in comparison with those presently based on digital aerial photography. Among others, present studies particularly focus on : 1- the geometric and radiometric quality assessment of the planned system products (sensor level, orthoimages and mosaics) ; 2- the capacity assessment of the Pleiades-HR constellation to meet the IGN-F cartographic mission needs in terms of image volume for the coverage of the national territory, whether in monoscopic or stereoscopic mode. After an overview of the main characteristics of the Pleiades-HR system, the paper aims at presenting the first results of these studies, which will be of great importance, together with the economic side, in the decision process of IGN-France to transfer, or not, part of the supplying of fresh images from the aerial source to the satellite source. Copyright SFPT Numéro de notice : A2006-638 Affiliation des auteurs : IGN (1940-2011) Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueNat DOI : sans En ligne : https://www.isprs.org/proceedings/XXXVI/part1/Papers/PS1-15.pdf Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28361
in Revue Française de Photogrammétrie et de Télédétection > n° 184 (Décembre 2006) . - pp 66 - 69[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 018-06041 RAB Revue Centre de documentation En réserve L003 Disponible Documents numériques
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First assessments of Pleiade... - pdf éditeur ISPRSAdobe Acrobat PDF The Pleiades-HR mosaic system product / Françoise de Lussy in Revue Française de Photogrammétrie et de Télédétection, n° 184 (Décembre 2006)
[article]
contenu dans ISPRS Commission 1 Symposium 2006, Paris, Marne-la-Vallée, 3-6 Juillet 2006: Des capteurs à l'imagerie, 2. Tome 2 / Alain Baudoin (2006)
Titre : The Pleiades-HR mosaic system product Type de document : Article/Communication Auteurs : Françoise de Lussy, Auteur ; Patrick Gigord, Auteur ; Sylvain Airault , Auteur Année de publication : 2006 Conférence : ISPRS 2006, Commission 1 Symposium, From sensors to imagery 03/07/2006 06/07/2006 Champs-sur-Marne [Paris Marne-la-Vallée] France OA ISPRS Archives Article en page(s) : pp 70 - 75 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s)
[Termes IGN] image à résolution submétrique
[Termes IGN] image multibande
[Termes IGN] image panchromatique
[Termes IGN] image Pléiades-HR
[Termes IGN] limite de résolution géométrique
[Termes IGN] mosaïquage d'images
[Termes IGN] orthoimage
[Termes IGN] orthophotoplan numérique
[Termes IGN] Pleiades-HR
[Termes IGN] satellite agile
[Termes IGN] valeur radiométriqueRésumé : (Auteur) Pleiades is the highest resolution civilian earth observing system ever developed in Europe. This imagery program is conducted by the French National Space Agency, CNES. It will operate in 2009-2010 two agile satellites designed to provide optical images to civilian and defense users. Images will be simultaneously acquired in Panchromatic (PA) and multispectral (XS) mode, which allows, in Nadir acquisition condition, to deliver 20 km wide, false or natural colored scenes with a 70 cm ground sampling distance after PA+XS fusion. Imaging capabilities have been highly optimized in order to acquire along-track stereo pairs and triplets, multi-targets and mosaics. The automatic orthomosaic product is the most ambitious innovation of the PHR ground image processing. Starting from an overview of the system characteristics enabling acquisition suitable for mosaic, this paper presents the geometric, radiometric and topological issues of the automatic ortho-mosaic and then focuses on the processing flow. It details the different steps: strategy, bundle adjustment, DEM refining, radiometric adjustment, seam line computation, a helped and quick image quality check and finally mosaic rectification. The process capabilities are illustrated with different sensor images. And finally the ortho-mosaic product content is described. Copyright SFPT Numéro de notice : A2006-639 Affiliation des auteurs : IGN+Ext (1940-2011) Thématique : IMAGERIE Nature : Article DOI : sans En ligne : https://www.isprs.org/proceedings/XXXVI/part1/Papers/T02-09.pdf Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28362
in Revue Française de Photogrammétrie et de Télédétection > n° 184 (Décembre 2006) . - pp 70 - 75[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 018-06041 RAB Revue Centre de documentation En réserve L003 Disponible Documents numériques
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The Pleiades-HR mosaic... - pdf editeur ISPRSAdobe Acrobat PDF Evaluation of the potential of Pleiades system for 3D city models production: building, vegetation and extraction / Mélanie Durupt in Revue Française de Photogrammétrie et de Télédétection, n° 184 (Décembre 2006)
[article]
contenu dans ISPRS Commission 1 Symposium 2006, Paris, Marne-la-Vallée, 3-6 Juillet 2006: Des capteurs à l'imagerie, 2. Tome 2 / Alain Baudoin (2006)
Titre : Evaluation of the potential of Pleiades system for 3D city models production: building, vegetation and extraction Type de document : Article/Communication Auteurs : Mélanie Durupt, Auteur ; David Flamanc , Auteur ; Arnaud Le Bris , Auteur ; Corina Iovan , Auteur ; Nicolas Champion , Auteur Année de publication : 2006 Conférence : ISPRS 2006, Commission 1 Symposium, From sensors to imagery 03/07/2006 06/07/2006 Champs-sur-Marne [Paris Marne-la-Vallée] France OA ISPRS Archives Article en page(s) : pp 83 - 88 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Photogrammétrie numérique
[Termes IGN] cartographie numérique
[Termes IGN] détection automatique
[Termes IGN] image à résolution submétrique
[Termes IGN] image Pléiades-HR
[Termes IGN] image tri-stéréoscopique
[Termes IGN] modèle 3D de l'espace urbain
[Termes IGN] modèle numérique de sursol
[Termes IGN] modèle numérique de terrain
[Termes IGN] modèle numérique du bâti
[Termes IGN] Pleiades-HR
[Termes IGN] satellite agile
[Termes IGN] simulation PleiadesRésumé : (Auteur) The Pleiades system developed by the French space agency CNES shall be ready for launch in early 2009. It deals with a new generation of high resolution optical satellites. The great agility of Pleiades satellites with their motion capability in roll, pitch, and heading, will allow new acquisition modes which are impossible with SPOT series satellites. Indeed, the system will be able to perform three-fold stereoscopic colour images of 20km swath and 70cm resolution. Several experimentations and simulations are being carried out in order to verify the ability of the system to fulfill the technical and operational requirements of the map-making processes. Last year, a first study has been carried out on 3D city models production on two small areas from simulated images and with a lot of different contexts. Considering the promising results, studies carry on this year, with more different areas and Pleiades simulation images more realistic. Two other topics have been studied : automatic vegetation detection and DTM processing. Concerning building extraction we have used the same production line as last year. Concerning vegetation extraction we tested two methods. The first one is classic : we threshold the Normalized Difference Vegetation Index (NDVI). The second method is more elaborated : it deals with an algorithm which studies the value of texture features and transforms colour spaces for segmentation and classification. For the DTM calculation we have used a method based on elastic grid algorithm. Finally we have integrated all these different necessary primitives (buildings, vegetation and DTM) to produce a complete 3D model on new datatests areas. Copyright SFPT Numéro de notice : A2006-640 Affiliation des auteurs : MATIS (1993-2011) Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueNat DOI : sans En ligne : https://www.isprs.org/proceedings/XXXVI/part1/Papers/T07-31.pdf Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28363
in Revue Française de Photogrammétrie et de Télédétection > n° 184 (Décembre 2006) . - pp 83 - 88[article]Exemplaires(1)
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Evaluation of the potential... - pdf editeur ISPRSAdobe Acrobat PDF Comparison of DEM generation and combination methods using high resolution optical stereo imagery and interferometric SAR data / D. Hoja in Revue Française de Photogrammétrie et de Télédétection, n° 184 (Décembre 2006)
[article]
Titre : Comparison of DEM generation and combination methods using high resolution optical stereo imagery and interferometric SAR data Type de document : Article/Communication Auteurs : D. Hoja, Auteur ; Peter Reinartz, Auteur ; Manfred Schroeder, Auteur Année de publication : 2006 Conférence : ISPRS 2006, Commission 1 Symposium, From sensors to imagery 03/07/2006 06/07/2006 Champs-sur-Marne [Paris Marne-la-Vallée] France OA ISPRS Archives Article en page(s) : pp 89 - 94 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Photogrammétrie numérique
[Termes IGN] analyse comparative
[Termes IGN] Barcelone
[Termes IGN] Bavière (Allemagne)
[Termes IGN] couple stéréoscopique
[Termes IGN] fusion de données multisource
[Termes IGN] image à résolution métrique
[Termes IGN] image ERS
[Termes IGN] image Ikonos
[Termes IGN] image optique
[Termes IGN] image radar moirée
[Termes IGN] image SPOT 5
[Termes IGN] modèle numérique de surfaceRésumé : (Auteur) Digital elevation models (DEM) from satellite data are generated mainly from two types of datasets using completely different methods: photogrammetry for optical stereo images (e.g. SPOT5, IKONOS) and interferometry for Synthetic Aperture Radar data (InSAR, e.g. ERS-Tandem, SRTM). Both generation methods show advantages and disadvantages but have similar accuracy values in comparison to a reference DEM. The paper aims at showing the potential for combined usage of several DSM (derived with different sensors and methods) to improve the overall accuracy. Some results are given for DEM fusion utilizing height error maps for each DSM and for DEM integration, where single point information from another DSM is inserted during the triangulation process. The quality of the DSM derived from one source and of the combined DSM depends on the steepness of the terrain and on the land cover type. For flat terrain or moderate hilly landscapes, a height accuracy in the order of 5 meters or better can be achieved for the mentioned sensors. Two test areas are chosen, where many different data sets are available and much knowledge exists from previous studies. The first test area is a region in the south-eastern part of Bavaria comprising a mostly hilly, post-glacial landscape including lakes and also mountains of the German Alps. The second test area is located in Catalonia, Spain, and includes the city of Barcelona as well as a mostly hilly terrain with some steep slopes and additionally the Mediterranean coast. The received DSM are compared qualitatively and quantitatively to the reference DEM with superior quality by looking at profiles and sub-area statistics. The results show that an improvement of the fused DSM and the integrated DSM can be quantitatively measured. Although the overall statistics for a larger region does show only a slight improvement, local errors can be reduced significantly so that the overall accuracy of the combined DSM is higher. Copyright SFPT Numéro de notice : A2006-641 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : sans En ligne : https://www.isprs.org/proceedings/XXXVI/part1/Papers/T07-29.pdf Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28364
in Revue Française de Photogrammétrie et de Télédétection > n° 184 (Décembre 2006) . - pp 89 - 94[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 018-06041 RAB Revue Centre de documentation En réserve L003 Disponible 3D physical versus empirical models for HR sensor orientation and elevation extraction: examples with Ikonos and Quickbird / Thierry Toutin in Revue Française de Photogrammétrie et de Télédétection, n° 184 (Décembre 2006)
[article]
Titre : 3D physical versus empirical models for HR sensor orientation and elevation extraction: examples with Ikonos and Quickbird Type de document : Article/Communication Auteurs : Thierry Toutin , Auteur ; P. Schauer, Auteur Année de publication : 2006 Conférence : ISPRS 2006, Commission 1 Symposium, From sensors to imagery 03/07/2006 06/07/2006 Champs-sur-Marne [Paris Marne-la-Vallée] France OA ISPRS Archives Article en page(s) : pp 115 - 120 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Photogrammétrie numérique
[Termes IGN] altitude
[Termes IGN] analyse comparative
[Termes IGN] compensation par moindres carrés
[Termes IGN] données lidar
[Termes IGN] image Ikonos
[Termes IGN] image Quickbird
[Termes IGN] modèle numérique de surface
[Termes IGN] modèle par fonctions rationnelles
[Termes IGN] orientation du capteur
[Termes IGN] point d'appuiRésumé : (Auteur) Elevations for digital surface model (DSM) generation were extracted from different stereo high-resolution (HR) images (QuickBird and Ikonos) using 3D physical and empirical geometric models. The 3D physical model is Toutin's model (TM) developed at the Canada Centre for Remote Sensing, and the empirical model is the rational function model (RFM). First, Vendor-supplied RFMs refined with polynomial functions and TM were compared for the sensor orientations with least-squares adjustments with different number of ground control points (GCPs). TM and RFMs gave similar results with Ikonos as soon as RFM was refined with a shift computed from at least one GCP. On the other hand, TM gave better results than RFMs with QuickBird regardless of the number of GCPs. Due to relief dependency, QuickBird RFM needed to be refined at least with linear functions computed from at least 6-10 GCPs. Some large errors were, however, noted on forward image RFM in column. The stereo-extracted elevations of DSMs were then compared to 0.2-m accurate Lidar elevation data. Because DSM stereo-extracted elevations included the height of land covers (trees, houses), elevation linear errors with 68 percent confidence level (LE68) were computed for the entire area and three land-cover classes (forested, urban/residential, bare surface). TM and RFMs with Ikonos, regardless of the method and GCP number, achieved comparable results for all classes while TM achieved overall better results than RFMs with QuickBird. All results demonstrated the necessity of refining Ikonos RFM with a tri-directional shift and at least one GCP but QuickBird RFM with 1st order linear functions and 6-10 GCPs. Copyright SFPT Numéro de notice : A2006-642 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueNat DOI : sans En ligne : https://www.isprs.org/proceedings/XXXVI/part1/Papers/PS1-06.pdf Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28365
in Revue Française de Photogrammétrie et de Télédétection > n° 184 (Décembre 2006) . - pp 115 - 120[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 018-06041 RAB Revue Centre de documentation En réserve L003 Disponible