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Geometric test field calibration of digital photogrammetric sensors / Eija Honkavaara in ISPRS Journal of photogrammetry and remote sensing, vol 60 n° 6 (September 2006)
[article]
Titre : Geometric test field calibration of digital photogrammetric sensors Type de document : Article/Communication Auteurs : Eija Honkavaara, Auteur ; E. Ahokas, Auteur ; Juha Hyyppä, Auteur ; et al., Auteur Année de publication : 2006 Article en page(s) : pp 387 - 399 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s)
[Termes IGN] analyse comparative
[Termes IGN] caméra numérique
[Termes IGN] erreur systématique
[Termes IGN] étalonnage de capteur (imagerie)
[Termes IGN] étalonnage géométrique
[Termes IGN] photogrammétrie numérique
[Termes IGN] précision géométrique (imagerie)Résumé : (Auteur) Test field system calibration will be a fundamental part of the future photogrammetric production line. Accurate calibration and performance evaluations are necessary for fully assessing the stability and accuracy of digital sensing techniques. In this paper, a method of comprehensive geometric calibration in a test field has been developed and empirically tested using eight image blocks collected with three UltraCamD digital large format photogrammetric cameras. Permanent photogrammetric test fields form the basis of the method. Important components of the method are determination of system parameters, evaluation of systematic errors, and assessment of geometric accuracy. The results showed that UltraCamD images contained systematic deformations that could not be modeled with single lens additional parameter models. Good point determination accuracy was obtained despite the systematic errors ; the typical accuracy was 2–3 um in image space in the horizontal coordinates and 0.05–0.09 of the object distance in height. One of the cameras had significantly poorer performance. In the worst cases, the horizontal accuracy was 5 um in image space and the height accuracy was 0.18 of the object distance. The analog cameras gave better results than the UltraCamD, but the development of appropriate mathematical models for UltraCamD as well as improvements in digital sensors may change the situation in the near future. Numéro de notice : A2006-411 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.isprsjprs.2006.04.003 En ligne : https://doi.org/10.1016/j.isprsjprs.2006.04.003 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28135
in ISPRS Journal of photogrammetry and remote sensing > vol 60 n° 6 (September 2006) . - pp 387 - 399[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 081-06061 SL Revue Centre de documentation Revues en salle Disponible Geometric validation of imagery and products from a high performance airborne digital sensor / Jon P. Mills in Revue Française de Photogrammétrie et de Télédétection, n° 183 (Septembre 2006)
[article]
Titre : Geometric validation of imagery and products from a high performance airborne digital sensor Type de document : Article/Communication Auteurs : Jon P. Mills, Auteur ; S. Alhamlan, Auteur ; et al., 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 81 - 85 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s)
[Termes IGN] ADS40
[Termes IGN] ALTM
[Termes IGN] compensation par bloc
[Termes IGN] compensation par faisceaux
[Termes IGN] données lidar
[Termes IGN] données localisées 3D
[Termes IGN] géoréférencement
[Termes IGN] image aérienne
[Termes IGN] modèle numérique de surface
[Termes IGN] point d'appui
[Termes IGN] précision géométrique (imagerie)
[Termes IGN] qualité géométrique (image)Résumé : (Auteur) This paper describes a geometric evaluation of the photogrammetric workflow resulting from an experimental aerial survey performed using a Leica Airborne Digital Sensor (ADS40) system. Imagery of a 13 km2 study area in the United Kingdom was captured using an ADS40. The study area was flown with the ADS40 at four different altitudes with resulting imagery at ground sampled distances of 15, 20, 25 and 30 cm. Ground points, comprising natural features distributed throughout the study area, were surveyed using GPS methods. In addition, RC30 film imagery and data from a lidar survey conducted using an Optech ALTM 2050 airborne laser scanner was also available for use in validation. The ADS40 imagery of the study area was processed using standard commercial software and a number of tests were conducted to geometrically assess the photogrammetric performance of imagery from the sensor at various stages throughout the photogrammetric workflow. Experiments examined the influence of ground control points (GCPs) in bundle block adjustment and the performance of digital elevation models (DEMs) resulting from the processing of ADS40 imagery. This independent research has permitted a series of initial conclusions to be drawn and preliminary recommendations to be made for optimum deployment of the ADS40 sensor under certain operational conditions. For example, it is shown that, despite advances made in direct positioning and orientation using integrated satellite and inertial surveying, the importing of GCPs into the block adjustment process remains a critical issue influencing the achievable accuracy during photogrammetric measurement. Copyright SFPT Numéro de notice : A2006-631 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/PS3-34.pdf Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28354
in Revue Française de Photogrammétrie et de Télédétection > n° 183 (Septembre 2006) . - pp 81 - 85[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 018-06031 RAB Revue Centre de documentation En réserve L003 Disponible High-end aerial digital cameras and their impact on the automation and quality of the production workflow / Nicolas Paparoditis in ISPRS Journal of photogrammetry and remote sensing, vol 60 n° 6 (September 2006)
[article]
Titre : High-end aerial digital cameras and their impact on the automation and quality of the production workflow Type de document : Article/Communication Auteurs : Nicolas Paparoditis , Auteur ; Jean-Philippe Souchon , Auteur ; Gilles Martinoty , Auteur ; Marc Pierrot-Deseilligny , Auteur Année de publication : 2006 Article en page(s) : pp 400 - 412 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s)
[Termes IGN] capteur aérien
[Termes IGN] chambre DTC
[Termes IGN] délai
[Termes IGN] étalonnage radiométrique
[Termes IGN] image multibande
[Termes IGN] image panchromatique
[Termes IGN] Institut géographique national (France)
[Termes IGN] orthoimageRésumé : (Auteur) The IGN digital camera project was established in the early 1990s. The first research surveys were carried out in 1996 and the digital camera was first used in production in 2000. In 2004 approximately 10 French departments (accounting for 10% of the territory) were covered with a four-head camera system and since summer 2005 all IGN imagery has been acquired digitally. Nevertheless the camera system is still evolving, with tests on new geometric configurations being continuously undertaken. The progressive integration of the system in IGN production workflows has allowed IGN to keep the system evolving in accordance with production needs. Remaining problems are due to specific camera characteristics such as CCD format, the optical quality of off-the-shelf lenses, and because some production tools are ill-adapted to digital images with a large dynamic range. However, when considering the pros and cons of integrating these images into production lines, the disadvantages are largely balanced by the numerous benefits this technology offers. Numéro de notice : A2006-412 Affiliation des auteurs : LOEMI (1985-2011) Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.isprsjprs.2006.06.003 Date de publication en ligne : 10/08/2006 En ligne : https://doi.org/10.1016/j.isprsjprs.2006.06.003 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28136
in ISPRS Journal of photogrammetry and remote sensing > vol 60 n° 6 (September 2006) . - pp 400 - 412[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 081-06061 SL Revue Centre de documentation Revues en salle Disponible Image restoration for resolution improvement of digital aerial images: a comparison of large format digital cameras / S. Becker in Revue Française de Photogrammétrie et de Télédétection, n° 183 (Septembre 2006)
[article]
Titre : Image restoration for resolution improvement of digital aerial images: a comparison of large format digital cameras Type de document : Article/Communication Auteurs : S. Becker, Auteur ; Norbert Haala, Auteur ; et al., 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 5 - 10 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image
[Termes IGN] accentuation de contours
[Termes IGN] ADS40
[Termes IGN] analyse comparative
[Termes IGN] caméra numérique
[Termes IGN] chambre à grand format
[Termes IGN] cohérence des couleurs
[Termes IGN] DMC
[Termes IGN] image aérienne
[Termes IGN] image numérique
[Termes IGN] instrumentation Z/I Imaging
[Termes IGN] pansharpening (fusion d'images)
[Termes IGN] restauration d'image
[Termes IGN] tâche image d'un point
[Termes IGN] UltraCamRésumé : (Auteur) Within the paper a comparative quantification of the spatial image resolution for large-format digital airborne cameras will be presented. For this purpose, imagery of the Leica ADS40, the Intergraph Z/I-imaging DMC and the Vexcel UltraCamD were examined. The respective spatial resolutions are represented by means of the point spread function, which can be measured easily and reliably at image edges. Thus, images of test patterns like a Siemens star were used. In addition to the evaluation of the original images as they are provided by the camera systems, the potential benefit of a resolution improvement by image restoration is demonstrated. Therefore, a linear restoring finite impulse response filter is applied. Usually, colour image acquisition by digital aerial camera systems is realised by combining data from the multi-spectral module with higher resolution panchromatic imagery. The quality of this pan-sharpening process is presented in the final part of the paper. For this purpose, the potential degradation of colour information by this process was quantified for the three tested camera systems in addition to the resolution measurements. Copyright SFPT Numéro de notice : A2006-625 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/T01-03.pdf Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28348
in Revue Française de Photogrammétrie et de Télédétection > n° 183 (Septembre 2006) . - pp 5 - 10[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 018-06031 RAB Revue Centre de documentation En réserve L003 Disponible Is there an ideal digital aerial camera? / Jean-Philippe Souchon in Revue Française de Photogrammétrie et de Télédétection, n° 183 (Septembre 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 : Is there an ideal digital aerial camera? Type de document : Article/Communication Auteurs : Jean-Philippe Souchon , Auteur ; Olivier Martin , Auteur ; Nicolas Paparoditis , Auteur ; et al., 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 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s)
[Termes IGN] ADS40
[Termes IGN] analyse comparative
[Termes IGN] caméra numérique
[Termes IGN] chambre à grand format
[Termes IGN] DMC
[Termes IGN] instrumentation IGN
[Termes IGN] UltraCamRésumé : (Auteur) The IGN digital camera project was set up in the early 90's and the first research surveys were carried out in 1996. The digital camera was first used in production in 2000 when the DMC and ADS40 systems appeared on the market at the beginning of the 21st century. Since then, two medium format systems (Applanix DSS322 and DiMAC system) and a third large-format system (Vexcel UltraCamD) appeared on the surveying market. Today, IGN's system could appear very underperforming in terms of possible swaths and frame rates compared with the ones offered by large format cameras ; and parts of our electronics have become obsolete. This is the reason why we recently reanalyzed the needs of IGN in term of digital imagery and confronted them to the main characteristics and capabilities of the different existing commercial systems. Considering that Bayer acquisition without a coupled panchromatic acquisition does not allow an image reconstruction of good quality and considering that an acquisition system based on CCD area sensors must be equipped with a Forward Motion Compensation (FMC) able to compensate dozens of pixels, we only focused on the three large-format systems that are : Intergraph's DMC, Vexcel's UltracamD, and Leica Geosystems' ADS40. Each of these three systems has its pros and cons and no one seems to bring an answer to all our needs. Copyright SFPT Numéro de notice : A2006-628 Affiliation des auteurs : LOEMI (1985-2011) Thématique : IMAGERIE Nature : Article DOI : sans En ligne : https://www.isprs.org/proceedings/XXXVI/part1/Papers/PS3-45.pdf Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28351
in Revue Française de Photogrammétrie et de Télédétection > n° 183 (Septembre 2006) . - pp 29 - 34[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 018-06031 RAB Revue Centre de documentation En réserve L003 Disponible Documents numériques
en open access
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