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The impact of relative radiometric calibration on the accuracy of kNN-predictions of forest attributes / T. Koukal in Remote sensing of environment, vol 110 n° 4 (30/10/2007)
[article]
Titre : The impact of relative radiometric calibration on the accuracy of kNN-predictions of forest attributes Type de document : Article/Communication Auteurs : T. Koukal, Auteur ; F. Suppan, Auteur ; W. Schneider, Auteur Année de publication : 2007 Conférence : ForestSat 2007, forests and remote sensing : methods and operational tools 05/11/2007 07/11/2007 Montpellier France Article en page(s) : pp 431 - 437 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image optique
[Termes IGN] Autriche
[Termes IGN] classification barycentrique
[Termes IGN] étalonnage radiométrique
[Termes IGN] forêt
[Termes IGN] image Landsat-TM
[Termes IGN] point d'appui
[Termes IGN] régression linéaireRésumé : (Auteur) The k-nearest-neighbour (kNN) algorithm is widely applied for the estimation of forest attributes using remote sensing data. It requires a large amount of reference data to achieve satisfactory results. Usually, the number of available reference plots for the kNN-prediction is limited by the size of the area covered by a terrestrial reference inventory and remotely sensed imagery collected from one overflight. The applicability of kNN could be enhanced if adjacent images of different acquisition dates could be used in the same estimation procedure. Relative radiometric calibration is a prerequisite for this. This study focuses on two empirical calibration methods. They are tested on adjacent LANDSAT TM scenes in Austria. The first, quite conventional one is based on radiometric control points in the overlap area of two images and on the determination of transformation parameters by linear regression. The other, recently developed method exploits the kNN-cross-validation procedure. Performance and applicability of both methods as well as the impact of phenology are discussed. Copyright Elsevier Numéro de notice : A2007-411 Affiliation des auteurs : non IGN Thématique : FORET/IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.rse.2006.08.016 En ligne : https://doi.org/10.1016/j.rse.2006.08.016 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28774
in Remote sensing of environment > vol 110 n° 4 (30/10/2007) . - pp 431 - 437[article]Sentinel-1, the radar mission for GMES operational land and sea services / E. Attema in ESA bulletin, n° 131 (August 2007)
[article]
Titre : Sentinel-1, the radar mission for GMES operational land and sea services Type de document : Article/Communication Auteurs : E. Attema, Auteur ; et al., Auteur Année de publication : 2007 Article en page(s) : pp 11 - 17 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Missions spatiales
[Termes IGN] bande C
[Termes IGN] Copernicus (programme européen)
[Termes IGN] interféromètrie par radar à antenne synthétique
[Termes IGN] limite de résolution radiométrique
[Termes IGN] polarisation
[Termes IGN] radar à antenne synthétique
[Termes IGN] radar imageur
[Termes IGN] Sentinel-1Résumé : (Auteur) The ESA Sentinels will be the first series of operational satellites to meet the Earth observation needs of the European Union-ESA Global Monitoring For Environment and Security (GMES) program. Existing and planned space assets will be complemented by new developments from ESA. The first is Sentinel-1, a pair of synthetic aperture radar (SAR) imaging satellites. Copyright European Space Agency Numéro de notice : A2007-315 Affiliation des auteurs : non IGN Thématique : IMAGERIE/POSITIONNEMENT Nature : Article DOI : sans En ligne : http://www.esa.int/esapub/bulletin/bulletin131/bul131a_attema.pdf Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28678
in ESA bulletin > n° 131 (August 2007) . - pp 11 - 17[article]On the long-term stability of microwave radiometers using noise diodes for calibration / S.T. Brown in IEEE Transactions on geoscience and remote sensing, vol 45 n° 7 Tome 1 (July 2007)
[article]
Titre : On the long-term stability of microwave radiometers using noise diodes for calibration Type de document : Article/Communication Auteurs : S.T. Brown, Auteur ; Shailen Desai, Auteur ; W. Lu, Auteur ; A.B. Tanner, Auteur Année de publication : 2007 Article en page(s) : pp 1908 - 1920 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s)
[Termes IGN] Advanced Microwave Radiometer
[Termes IGN] bruit (théorie du signal)
[Termes IGN] capteur spatial
[Termes IGN] diode
[Termes IGN] étalonnage de capteur (imagerie)
[Termes IGN] radiomètre à hyperfréquence
[Termes IGN] température de luminance
[Termes IGN] water vapour radiometerRésumé : (Auteur) Results are presented from the long-term monitoring and calibration of the National Aeronautics and Space Administration Jason Microwave Radiometer (JMR) on the Jason-1 ocean altimetry satellite and the ground-based Advanced Water Vapor Radiometers (AWVRs) developed for the Cassini Gravity Wave Experiment. Both radiometers retrieve the wet tropospheric path delay (PD) of the atmosphere and use internal noise diodes (NDs) for gain calibration. The JMR is the first radiometer to be flown in space that uses NDs for calibration. External calibration techniques are used to derive a time series of ND brightness for both instruments that is greater than four years. For the JMR, an optimal estimator is used to find the set of calibration coefficients that minimize the root-mean-square difference between the JMR brightness temperatures and the on-Earth hot and cold references. For the AWVR, continuous tip curves are used to derive the ND brightness. For the JMR and AWVR, both of which contain three redundant NDs per channel, it was observed that some NDs were very stable, whereas others experienced jumps and drifts in their effective brightness. Over the four-year time period, the ND stability ranged from 0.2% to 3% among the diodes for both instruments. The presented recalibration methodology demonstrates that long-term calibration stability can be achieved with frequent recalibration of the diodes using external calibration techniques. The JMR PD drift compared to ground truth over the four years since the launch was reduced from 3.9 to $-$0.01 mm/year with the recalibrated ND time series. The JMR brightness temperature calibration stability is estimated to be 0.25 K over ten days. Copyright IEEE Numéro de notice : A2007-170 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1109/TGRS.2006.888098 En ligne : https://doi.org/10.1109/TGRS.2006.888098 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28533
in IEEE Transactions on geoscience and remote sensing > vol 45 n° 7 Tome 1 (July 2007) . - pp 1908 - 1920[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 065-07071A RAB Revue Centre de documentation En réserve L003 Disponible Postlaunch calibration of the NOAA-18 Advanced Microwave Sounding Unit-A / T. Mo in IEEE Transactions on geoscience and remote sensing, vol 45 n° 7 Tome 1 (July 2007)
[article]
Titre : Postlaunch calibration of the NOAA-18 Advanced Microwave Sounding Unit-A Type de document : Article/Communication Auteurs : T. Mo, Auteur Année de publication : 2007 Article en page(s) : pp 1928 - 1937 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s)
[Termes IGN] Advanced Microwave Sounding Unit
[Termes IGN] étalonnage de capteur (imagerie)
[Termes IGN] étalonnage en vol
[Termes IGN] radiomètre à hyperfréquence
[Termes IGN] température de luminanceRésumé : (Auteur) The National Oceanic and Atmospheric Administration (NOAA)-18 Polar-orbiting Operational Environmental Satellite (POES) was successfully launched with the fourth Advanced Microwave Sounding Unit-A onboard in May 2005. After launch, a systematic postlaunch calibration and validation of the instrument performance was conducted with on-orbit data. A brief report of the initial assessment of the instrument performance is presented in this paper. Scan-by-scan examination of the radiometric calibration counts is employed to confirm normal functioning of the instrument and to detect any anomalous events, such as lunar contamination in the space radiometric counts, which are accurately detected, flagged, and corrected using a physical model of lunar surface temperature and antenna patterns derived from on-orbit data. The long-term trends of the space and warm calibration counts, channel gains, and housekeeping temperature sensors are monitored. Temperature sensitivity (or the noise-equivalent $Delta hbox{T}$) values for individual channels are also monitored since launch. The long-term temporal trends of the monthly averages and angular distributions of brightness temperature measurements from the NOAA-16 and -18 over the Amazon rain forest region are obtained and compared to demonstrate that the Amazon rain forest can be used as a hot reference calibration target. The establishment of a land calibration target is an important addition to the few tools available to date for calibration and validation of spaceborne microwave radiometers. Copyright IEEE Numéro de notice : A2007-172 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1109/TGRS.2007.897451 En ligne : https://doi.org/10.1109/TGRS.2007.897451 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28535
in IEEE Transactions on geoscience and remote sensing > vol 45 n° 7 Tome 1 (July 2007) . - pp 1928 - 1937[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 065-07071A RAB Revue Centre de documentation En réserve L003 Disponible Geometric consistency and stability of consumer-grade digital cameras for accurate spatial measurement / R. Wackrow in Photogrammetric record, vol 22 n° 118 (June - August 2007)
[article]
Titre : Geometric consistency and stability of consumer-grade digital cameras for accurate spatial measurement Type de document : Article/Communication Auteurs : R. Wackrow, Auteur ; Jim H. Chandler, Auteur ; P. Bryan, Auteur Année de publication : 2007 Article en page(s) : pp 121 - 134 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] cohérence géométrique
[Termes IGN] distorsion d'image
[Termes IGN] élément d'orientation interne
[Termes IGN] erreur systématique
[Termes IGN] étalonnage de capteur (imagerie)
[Termes IGN] Leica Photogrammetry Suite
[Termes IGN] précision géométrique (imagerie)
[Termes IGN] prise de vue terrestreRésumé : (Auteur) It is known that uncertain internal geometry of consumer-grade digital cameras limits the accuracy of data that can be extracted. These cameras can be calibrated, but the validity of calibration data over a period of time should be carefully assessed before subsequent photogrammetric measurement. This paper examines the geometric stability and manufacturing consistency of a typical low-cost digital camera (Nikon Coolpix 5400) by estimating the degree of similarity between interior orientation parameters (IOP), established over a 1-year period. Digital elevation models (DEMs) were extracted with differing IOP, and accuracies were compared using data obtained from seven identical cameras. An independent self-calibrating bundle adjustment (GAP) and the Leica Photogrammetry Suite (LPS) software were used to provide these data-sets. Results are presented that indicate the potential of these cameras to maintain their internal geometry in terms of temporal stability and manufacturing consistency. This study also identifies residual systematic error surfaces or ‘‘domes’’, discernible in ‘‘DEMs of difference’’. These are caused by slightly inaccurately estimated lens distortion parameters, which effectively constrain the accuracies achievable with this class of sensor. Copyright RS&PS + Blackwell Publishing Numéro de notice : A2007-363 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.1111/j.1477-9730.2007.00436.x En ligne : https://doi.org/10.1111/j.1477-9730.2007.00436.x Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28726
in Photogrammetric record > vol 22 n° 118 (June - August 2007) . - pp 121 - 134[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 106-07021 RAB Revue Centre de documentation En réserve L003 Disponible A review and analyses of plumb-line calibration / J.L. Lerma in Photogrammetric record, vol 22 n° 118 (June - August 2007)PermalinkCloud mapping with ground-based photogrammetric cameras / G. Seiz in International Journal of Remote Sensing IJRS, vol 28 n° 9 (May 2007)PermalinkAn automatic approach for camera calibration from vanishing points / L. Grammatikopoulos in ISPRS Journal of photogrammetry and remote sensing, vol 62 n° 1 (May 2007)PermalinkA rigorous laboratory calibration method for interior orientation of an airborne linear push-broom camera / Tianen Chen in Photogrammetric Engineering & Remote Sensing, PERS, vol 73 n° 4 (April 2007)PermalinkThe MISR radiometric calibration process / Carol J. Bruegge in Remote sensing of environment, vol 107 n° 1-2 (15 March 2007)PermalinkMERIS in-flight spectral calibration / S. Delwart in International Journal of Remote Sensing IJRS, vol 28 n°3-4 (February 2007)PermalinkPerformance analysis of integrated sensor orientation / A. Ip in Photogrammetric Engineering & Remote Sensing, PERS, vol 73 n° 1 (January 2007)PermalinkStage de modélisation de bâtiments en 3D / Brice Virly (2007)PermalinkCalibration of NOAA16 AVHRR over a desert site using MODIS data / Eric F. Vermote in Remote sensing of environment, vol 105 n° 3 (15/12/2006)PermalinkAutomated metric calibration of colour digital cameras / S. Cronk in Photogrammetric record, vol 21 n° 116 (December 2006 - February 2007)Permalink