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Termes IGN > 1- Outils - instruments et méthodes > instrument > capteur (télédétection) > capteur imageur > caméra numérique > chambre DTC > ADS40
ADS40Synonyme(s)Airborne digital sensor 40 |
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Geometric analysis and self-calibration of ADS40 imagery / Sara Gonzalez in Photogrammetric record, vol 28 n° 142 (June - August 2013)
Titre : Geometric analysis and self-calibration of ADS40 imagery Type de document : Article/Communication Auteurs : Sara Gonzalez, Auteur ; Javier Gomez-Lahoz, Auteur ; Diego Gonzalez-Aguilera, Auteur ; Benjamin Arias, Auteur ; et al., Auteur Année de publication : 2013 Article en page(s) : pp 145 - 161 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s)
[Termes IGN] ADS40
[Termes IGN] aérotriangulation
[Termes IGN] auto-étalonnage
[Termes IGN] capteur en peigne
[Termes IGN] Espagne
[Termes IGN] modèle géométrique de prise de vue
[Termes IGN] test de performanceRésumé : (Auteur) The increasing role of pushbroom cameras in large photogrammetric projects has fostered international interest in achieving a sound knowledge of this device. In addition, the classic software tools, implemented for frame cameras, need to be adapted to cope with modified aerial triangulation and self-calibration procedures. This contribution presents the results obtained from the geometrical analysis and self-calibration of the second-generation pushbroom ADS40 camera, the SH52. For this purpose, a testfield was designed and built on the outskirts of Ávila, Spain and two blocks, flown at different heights, were imaged. A wide network of well-defined control and check points was observed in order to provide a thorough assessment of the accuracy and reliability of the camera. Empirical analysis of a variety of models within aerial triangulation as well as the use of internal camera parameters has led to an evaluation of the camera's performance in a real-life environment. Numéro de notice : A2013-333 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.1111/phor.12017 Date de publication en ligne : 26/04/2013 En ligne : https://doi.org/10.1111/phor.12017 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32471
in Photogrammetric record > vol 28 n° 142 (June - August 2013) . - pp 145 - 161[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 106-2013021 RAB Revue Centre de documentation En réserve L003 Disponible
Titre : Comparison of DMC, UltraCam, and ADS40 imagery for benthic habitat and propeller scar mapping Type de document : Article/Communication Auteurs : K. Green, Auteur ; M. Tukman, Auteur ; M. Finkbeiner, Auteur Année de publication : 2011 Article en page(s) : pp 589 - 599 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] DMC
[Termes IGN] fond marin
[Termes IGN] habitat animal
[Termes IGN] herbier marin
[Termes IGN] image aérienne
[Termes IGN] instrumentation Intergraph
[Termes IGN] instrumentation Leica
[Termes IGN] Mexique (golfe du)
[Termes IGN] Propulseur
[Termes IGN] UltraCamRésumé : (Auteur) This article compares the use of ADS40-52, DMC, and Ultra-CamD digital airborne camera imagery for mapping benthic habitat and identifying boat propeller scars in seagrass habitats. The three image data sets were collected over Redfish Bay, Texas on the same day, under almost identical environmental conditions. Next, the data sets were compared to each another using a variety of criteria. Finally, automated methods were used to create maps of propeller scars and the accuracy of each map was analyzed. Significant findings include: 1- Digital airborne ADS40-52, DMC, and Ultra-Cam imagery can be used to effectively map benthic habitat and propeller scars. 2- Imagery from the DMC and ADS40-52 had the highest spatial accuracy. 3- Spectral separatability of benthic habitat class and propeller scars is best in the DMC and the ADS40-52 imagery. 4- The accuracy of propeller scar maps was highest for maps produced from the ADS40-52 data. Numéro de notice : A2011-255 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.14358/PERS.77.6.589 En ligne : https://doi.org/10.14358/PERS.77.6.589 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=31033
in Photogrammetric Engineering & Remote Sensing, PERS > vol 77 n° 6 (June 2011) . - pp 589 - 599[article]
Titre : The EuroSDR project "radiometric aspects of digital photogrammetric images" : results of the empirical phase Type de document : Article/Communication Auteurs : Eija Honkavaara, Auteur ; Roman Arbiol, Auteur ; Lauri Markelin, Auteur ; Lucas Martinez, Auteur ; Mathieu Brédif Editeur : Helsinki : Finnish Geodetic Institute FGI Année de publication : 01/06/2011 Conférence : ISPRS 2011, High-Resolution Earth Imaging for Geospatial Information workshop 14/06/2011 17/06/2011 Hanovre Allemagne OA ISPRS Archives Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s)
[Termes IGN] ADS40
[Termes IGN] DMC
[Termes IGN] étalonnage de capteur (imagerie)
[Termes IGN] étalonnage géométrique
[Termes IGN] étalonnage radiométrique
[Termes IGN] réflectance
[Termes IGN] uniformisation d'histogrammeRésumé : (Auteur) This article presents the empirical research carried out in the context of the multi-site EuroSDR project “Radiometric aspects of digital photogrammetric images” and provides highlights of the results. The investigations have considered the vicarious radiometric and spatial resolution validation and calibration of the sensor system, radiometric processing of the image blocks either by performing relative radiometric block equalization or into absolutely reflectance calibrated products, and finally aspects of practical applications on NDVI layer generation and tree species classification. The data sets were provided by Leica Geosystems ADS40 and Intergraph DMC and the participants represented stakeholders in National Mapping Authorities, software development and research. The investigations proved the stability and quality of evaluated imaging systems with respect to radiometry and optical system. The first new-generation methods for reflectance calibration and equalization of photogrammetric image block data provided promising accuracy and were also functional from the productivity and usability points of view. The reflectance calibration methods provided up to 5% accuracy without any ground reference. Application oriented results indicated that automatic interpretation methods will benefit from the optimal use of radiometrically accurate multi-view photogrammetric imagery. Numéro de notice : C2011-054 Affiliation des auteurs : MATIS+Ext (1993-2011) Thématique : IMAGERIE Nature : Communication DOI : 10.5194/isprsarchives-XXXVIII-4-W19-123-2011 Date de publication en ligne : 07/09/2012 En ligne : http://dx.doi.org/10.5194/isprsarchives-XXXVIII-4-W19-123-2011 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=64373 Sensor modelling and validation for linear array aerial and satellite imagery / Sultan Aksakal Kocaman (2009)
Titre : Sensor modelling and validation for linear array aerial and satellite imagery Type de document : Thèse/HDR Auteurs : Sultan Aksakal Kocaman, Auteur ; Armin W. Gruen, Directeur de thèse ; Christian Heipke, Directeur de thèse Editeur : Zurich : Institut für Geodäsie und Photogrammetrie IGP - ETH Année de publication : 2009 Collection : IGP Mitteilungen, ISSN 0252-9335 num. 106 Importance : 166 p. Format : 21 x 30 cm ISBN/ISSN/EAN : 978-3-906467-88-7 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s)
[Termes IGN] ADS40
[Termes IGN] capteur aérien
[Termes IGN] capteur en peigne
[Termes IGN] capteur linéaire
[Termes IGN] capteur optique
[Termes IGN] capteur spatial
[Termes IGN] compensation par faisceaux
[Termes IGN] détecteur à transfert de charge
[Termes IGN] étalonnage de capteur (imagerie)
[Termes IGN] image ALOS-PRISM
[Termes IGN] modèle géométrique de prise de vue
[Termes IGN] modélisation géométrique de prise de vue
[Termes IGN] orientation du capteur
[Termes IGN] Panchromatic Remote Sensing Instrument for Stereo Mapping
[Termes IGN] pouvoir de résolution géométriqueIndex. décimale : 35.13 Prises de vues par capteurs spatiaux Résumé : (Auteur) The Linear Array CCD technology is widely used in the new generation aerial photogrammetric sensors and also in the high-resolution satellite optical sensors. In comparison to the Matrix (frame/area) Array sensors, the Linear Array CCD sensors have smaller number of detectors to cover the same swath width. In addition, the flexibility is higher in the physical sensor design. The conventional film cameras used in aerial photogrammetry are manufactured in frame format. The first remote sensing sensors for Earth observation employed film cameras as well. The recent sensor technologies of the optical remote sensing satellites are replaced with the Linear Array CCDs. In case of the aerial photogrammetric sensors, medium and small format aerial cameras are produced only in the frame format. The development in large format cameras is twofold. The Linear Array CCD and Matrix Array CCD sensors have been present in the industry since the year 2000.
Due to the geometric differences between the Linear Array cameras and the frame cameras, the conventional photogrammetric procedures for the geometric processing of the Linear Array CCD images should be redefined or newly developed. The trajectory modeling is one of the main concepts, which entered into the field of photogrammetry with the aerial and satellite pushbroom sensors. The modified collinearity equations are extended with mathematical functions to model the image trajectory in the bundle adjustment. This study encompasses the triangulation of Linear Array CCD images with the use of different trajectory models. The self-calibration models are partially adapted from the frame sensors in accordance with the physical structures of the Linear Array CCD sensors.
In general, the triangulation and self-calibration of the aerial and the satellite Linear Array CCD images show similarities in terms of trajectory modeling and the physical definitions of the additional parameters. The main difference is in the number unknown parameters defined in the bundle adjustment, which is calculated as a function of the number of lenses, the trajectory model configuration, and the number of Linear Array CCDs used in the sensor. Therefore, similar sensor modeling and calibration approaches are applied in this study, with necessary adjustments for each system.
In order to obtain high accuracy point positioning, high quality image trajectory measurement is crucial. The given trajectory can be modeled in the adjustment by using constant and linear correction parameters, as well as higher order polynomials. This study investigates the three different trajectory models with three different mathematical approaches. Two of the models are investigated at different levels of sophistication by altering the model parameters.
Two different aerial Linear Array CCD sensors, the STARIMAGER of former Starlabo Corporation, Japan, and the ADS40 sensor of the Leica Geosystems, Heerbrugg, are used for the practical investigations. The PRISM (Panchromatic Remote-sensing Instrument for Stereo Mapping) onboard of Japanese ALOS satellite launched by JAXA (Japan Aerospace Exploration Agency) in 2006 is the satellite Linear Array CCD sensor used for the application parts of this study. The two aerial Linear Array CCD sensors work with the TLS (Three-Line-Scanner) principle. Three or more Linear Array CCDs are located in the focal plane of a single lens with different viewing angles providing stereo capability. The PRISM sensor differs in the optical design with three camera heads, each associated with a different viewing angle.
Due to the design differences between the sensors, two sets of additional 'parameters for self-calibration are applied in this study. The aerial TLS sensors share the same set of additional parameters due to similar interior geometries of the sensors. The self-calibration of the PRISM sensor uses a different set due to multiple lenses and also multiple CCD chips used to form each image line.
The sensor orientation and calibration methods presented in this study are validated using a number of application datasets. The image datasets of the three sensors are acquired over specially established testfields. Triangulation results prove the importance of high quality trajectory measurements for accurate sensor orientation. When the given image trajectory has a low quality, a sophisticated trajectory model should be used together with a high number of ground control points.
This study also shows that, despite their weaker sensor geometry, the Linear Array CCD sensors have reached the accuracy potential of the conventional frame imagery for point determination. In addition, similar to the conventional film sensors, self-calibration has proven as a powerful tool for modeling the systematic errors of the Linear Array CCD imagery, albeit the method should be applied with a great care.Note de contenu : 1 Introduction
1.1 Research Objectives
1.2 Review of Digital Optical Sensors
1.2.1 Point-based Sensors
1.2.2 Linear Array CCD Sensors
1.2.3 Frame Array CCD Sensors
1.3 Review of Sensor Calibration Approaches for Linear Array CCD Sensors
1.4 Review of Sensor Orientation Methods for Linear Array CCD Sensors
1.4.1 Direct vs. Indirect Georeferencing
1.4.2 Rigorous vs. Generic Models for Georeferencing
1.5 Quality Analysis and Validation for the Geometric Processing Methods
1.6 Outline
2 Characterizations of the Linear Array CCD Sensor Geometries
2.1 Optical System Specification
2.2 Line Geometry
2.3 Resolution Specification
2.3.1 Spatial Resolution
2.3.2 Radiometric Resolution
2.3.3 Spectral Resolution
2.3.4 Temporal Resolutions of Satellite Sensors
2.4 Operation Principles
2.4.1 Sensor and Platform Synchronization
2.4.2 Stereo Acquisition
2.4.3 Platform Stabilization
3 Calibration Parameters for the Linear Array CCD Sensors .
3.1 Optical System Related Parameters
3.1.1 Principal Point Displacement
3.1.2 Camera Constant
3.1.3 Lens Distortions
3.2 CCD Line Related Parameters
3.2.1 Scale effect
3.2.2 Rotation
3.2.3 Displacement from the Principal Point
3.2.4 Bending
4 Methodology for Sensor Orientation and Calibration
4.1 Preparation for Rigorous Sensor Orientation
4.1.1 Image Trajectory Extraction
4.1.2 Interior Orientation Extraction
4.1.3 Coordinate System Transformations
4.2 Rigorous Sensor Orientation
4.2.1 Modified Bundle Adjustment with Trajectory Modeling
4.2.2 Self-calibration Method
4.2.3 Weighting Scheme of the Bundle Adjustment
4.2.4 Accuracy Assessment of the Bundle Adjustment
4.2.5 Processing time
5 Applications
5.1 Starlmager Sensor
5.1.1 Applications over the Yoriichio Testfield, Japan
5.1.2 Findings and Discussion
5.2 ADS40 Sensor
5.2.1 Applications to Testfields
5.2.2 Findings and Discussion
5.3 The ALOS/PRISM Sensor
5.3.1 Introduction
5.3.2 Applications to Testfields
5.3.3 Findings and Discussion
6 Conclusions and Outlook
6.1 Summary
6.2 Conclusions
6.3 Recommendations for Future WorkNuméro de notice : 15509 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Thèse étrangère En ligne : http://dx.doi.org/10.3929/ethz-a-005780510 Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=62742 Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 15509-01 35.13 Livre Centre de documentation En réserve M-103 Disponible
Titre : Radiometric calibration and characterization of large-format digital photogrammetric sensors in a test field Type de document : Article/Communication Auteurs : Lauri Markelin, Auteur ; Eija Honkavaara, Auteur ; J. Peltoniemi, Auteur ; et al., Auteur Année de publication : 2008 Article en page(s) : pp 1487 - 1500 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s)
[Termes IGN] ADS40
[Termes IGN] chambre à grand format
[Termes IGN] chambre DTC
[Termes IGN] DMC
[Termes IGN] étalonnage de chambre métrique
[Termes IGN] étalonnage radiométrique
[Termes IGN] linéarité
[Termes IGN] modèle linéaire
[Termes IGN] qualité radiométrique (image)
[Termes IGN] test de performance
[Termes IGN] UltraCamRésumé : (Auteur) Test field calibration is an attractive approach to calibrating and characterizing the radiometry of airborne imaging instruments. In this study, a method for radiometric test field calibration for digital photogrammetric instruments is developed, and it is used to evaluate the radiometric performance of large-format photogrammetric sensors as the ADS40, the DMC, and the UltraCamD. In the study, linearity, dynamic range, sensitivity, and absOlute calibration were evaluated. The results demonstrated the high radiometric quality of the sensors tested. All the sensors were linear in response. The DMC used the 12-bit dynamic range entirely, while the ADS40 and the UltraCamD indicated close to the 13-bit dynamic range. The sensors performed quite differently with respect to sensitivity. With the DMC and the UltraCamD a risk of overexposure appeared, while the color channels of the ADS40 showed low sensitivity. Because the sensors were linear in response, they could be absolutely calibrated using linear models. Copyright ASPRS Numéro de notice : A2008-477 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.14358/PERS.74.12.1487 En ligne : https://doi.org/10.14358/PERS.74.12.1487 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29546
in Photogrammetric Engineering & Remote Sensing, PERS > vol 74 n° 12 (December 2008) . - pp 1487 - 1500[article]
PermalinkPermalinkPermalinkPermalinkPermalinkn° 181 - Mars 2006 - Des capteurs à l'imagerie : symposium ISPRS Commission technique 1, [Actes], Marne la Vallée, 3 - 6 juillet 2006. WG 1/1 standards calibration and validation (Bulletin de Revue Française de Photogrammétrie et de Télédétection) / Société française de photogrammétrie et de télédétection
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