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Performance analysis of integrated sensor orientation / A. Ip in Photogrammetric Engineering & Remote Sensing, PERS, vol 73 n° 1 (January 2007)
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Titre : Performance analysis of integrated sensor orientation Type de document : Article/Communication Auteurs : A. Ip, Auteur ; Naser El-Sheimy, Auteur ; M. Mostafa, Auteur Année de publication : 2007 Article en page(s) : pp 89 - 97 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s)
[Termes IGN] aérotriangulation numérique
[Termes IGN] capteur imageur
[Termes IGN] contrôle qualité automatique
[Termes IGN] coût
[Termes IGN] élément d'orientation externe
[Termes IGN] étalonnage de capteur (imagerie)
[Termes IGN] géoréférencement direct
[Termes IGN] GPS en mode différentiel
[Termes IGN] GPS-INS
[Termes IGN] orientation du capteur
[Termes IGN] orientation du capteur intégrée
[Termes IGN] point d'appui
[Termes IGN] qualité des données
[Termes IGN] test de performanceRésumé : (Auteur) Integrated multi-sensor systems, with their major progress in terms of sensor resolution, data rate and operational flexibility, have become a very attractive mapping tool over the last decade. In aerial mapping application, for example, Exterior Orientation (EO) parameters for the imaging sensors are required. Using the integrated Differential Global Positioning System (DGPS) with Inertial Measurement Units (IMU), direct determination of the EO parameters can be obtained from the integrated system navigation solution. This process is referred to as Direct Georeferencing (DG). DG provides substantial benefits over the indirect determination method of estimating the EO parameters from conventional Aerial Triangulation (AT) techniques using a block of images with a sufficient number of known control points. These benefits include the ability to map remote and inaccessible regions, and by replacing tie point measurements/matching and AT, significant cost-savings can be obtained for projects that do not require stereo models (such as projects with existing DEM or single image). The accuracy of DG, however, is limited by the accuracy attainable by the DGPS and any residual datum calibration errors. These can typically be as large as 10 cm RMSE, which is not sufficient for some large scale mapping applications. However, by combining the direct EO data a traditional block adjustment, AT techniques can be used to remove the residual errors in the solution. This technique is known as Integrated Sensor Orientation (ISO). It has several advantages over traditional AT, primarily because the stable geometry provided by direct EO can reduce the number of required GCP and tie-point to a minimum. At the same time, ISO provides an excellent tool for Quality Control/Quality Assurance (QC/QA) of the EO derived from a DG system. This paper examines the factors that determine the system performance for ISO. In addition, examples are given to illustrate the expected accuracy of an aerial mapping project using ISO under different qualities of DGPS/IMU data. Copyright ASPRS Numéro de notice : A2007-013 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.14358/PERS.73.1.89 En ligne : https://doi.org/10.14358/PERS.73.1.89 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28379
in Photogrammetric Engineering & Remote Sensing, PERS > vol 73 n° 1 (January 2007) . - pp 89 - 97[article]
Titre : Photogrammetry : geometry from images and laser scans Type de document : Guide/Manuel Auteurs : Karl Kraus, Auteur Mention d'édition : 2nd edition Editeur : Berlin, New York : Walter de Gruyter Année de publication : 2007 Importance : 459 p. Format : 18 x 25 cm ISBN/ISSN/EAN : 978-3-11-019007-6 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Photogrammétrie numérique
[Termes IGN] aérotriangulation
[Termes IGN] analyse d'image numérique
[Termes IGN] appareil de restitution photogrammétrique
[Termes IGN] balayage laser
[Termes IGN] orthoimage
[Termes IGN] restitution
[Termes IGN] traitement d'imageIndex. décimale : 33.00 Photogrammétrie - généralités Résumé : (Editeur) This textbook deals with the basics and methods of photogrammetry and laser scanning which are used to determine the form and location of objects, with measurements provided by sensors placed in air planes as well as on terrestrial platforms. Many examples and exercises with solutions are included. Note de contenu : 1 - Introduction
1.1 Definitions
1.2 Applications
1.3 Some remarks on historical development
2 - Preparatory remarks on mathematics and digital image processing
2.1 Preparatory mathematical remarks
3 - Photogrammetric recording systems and their application
3.1 The basics of metric cameras
3.2 Photochemical image recording
3.3 Photoelectronic image recording
3.4 Digitizing analogue images
3.5 Digital image enhancement
3.6 Image pyramids/data compression
3.7 Aerial cameras and their use in practice
3.8 Terrestrial metric cameras and their application
4 - Orientation procedures and some methods of stereoprocessing
4.1 With known exterior orientation
4.2 With unknown exterior orientation
4.3 Relative orientation
4.4 Absolute orientation
4.5 Image coordinate refinement
4.6 Accuracy of point determination in a stereopair
5 - Photogrammetric triangulation
5.1 Preliminary remarks on aerotriangulation
5.2 Block adjustment by independent models
5.3 Bundle block adjustment
5.4 GPS- and IMU-assisted aerotriangulation
5.5 Georeferencing of measurements made with a 3-line camera
5.6 Accounting for Earth curvature and distortions due to cartographic projections
5.7 Triangulation in close range photogrammetry
6 - Plotting instruments and stereoprocessing procedures
6.1 Stereoscopic observation systems
6.2 The principles of stereoscopic matching and measurement
6.3 Analogue stereoplotters
6.4 Analytical stereoplotters
6.5 Digital stereoplotting equipment
6.6 Computer-supported manual methods of analysis
6.7 Operator accuracy with a computer assisted system
6.8 Automatic and semi-automatic processing methods
7 - Orthophotos and single image analysis
7.1 Perspective distortion in a metric image
7.2 Orthophotos of plane objects
7.3 Orthophotos of curved objects
7.4 Analogue, analytical and digital single image analysis
7.5 Photo models
7.6 Static and dynamic visualizations
8 - Laserscanning
8.1 Airborne laser scanning
8.2 Terrestrial laser scanning
8.3 Short range laser scanning
AppendicesNuméro de notice : 20596 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Manuel de cours Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=63086 Réservation
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Code-barres Cote Support Localisation Section Disponibilité 20596-01 33.00 Livre Centre de documentation Photogrammétrie - Lasergrammétrie 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)
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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 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)
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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 An 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)
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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)
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