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Radiometric characterization of Ikonos multispectral imagery / M. Pagnutti in Remote sensing of environment, vol 88 n° 1 (30/11/2003)  

Public [article]  inRemote sensing of environment > vol 88 n° 1 (30/11/2003) . - pp 53 - 68 Titre : Radiometric characterization of Ikonos multispectral imagery Type de document : Article/Communication Auteurs : M. Pagnutti, Auteur ; M. Kelly, Auteur ; V. Zanoni, Auteur ; K. Thome, Auteur ; S. Schiller, Auteur Année de publication : 2003 Article en page(s) : pp 53 - 68 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s) [Termes IGN] compensation [Termes IGN] étalonnage radiométrique [Termes IGN] fonction de transfert de modulation [Termes IGN] image à très haute résolution [Termes IGN] image Ikonos [Termes IGN] image multibande [Termes IGN] modèle de transfert radiatif Résumé : (Auteur) A radiometric characterization of Space Imaging's IKONOS 4-m multispectral imagery has been performed by a National Aeronautics and Space Administration (NASA) funded team from NASA Stennis Space Center, the University of Arizona Remote Sensing Group (U of ARSG), and South Dakota State University (SDSU). Both intrinsic radiometry and the effects of Space Imaging processing on radiometry were investigated. Relative radiometry was examined with uniform Antarctic and Saharan sites. Absolute radiometric calibration was performed using reflectance-based vicarious calibration methods on several uniform sites imaged by IKONOS coincident with Ground-based surface and atmospheric measurements. Ground-based data and the IKONOS spectral response function served as input to radiative transfer codes to generate a top-of-atmosphere (TOA) radiance estimate. Calibration coefficients derived from each vicarious calibration were combined to generate an IKONOS radiometric gain coefficient for each multispectral band assuming a linear response over the full dynamic range of the instrument. These calibration coefficients were made available to Space Imaging, which subsequently adopted them by updating its initial set of callibration coefficients. IKONOS imagery procured through the NASA Scientific Data Purchase was processed with or without a Modulation Transfer Function Compensation (MTFC) kernel. The radiometric effects of this kernel on various scene types were also investigated. Numéro de notice : A2003-331 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.rse.2003.07.008 En ligne : https://doi.org/10.1016/j.rse.2003.07.008 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=22627 [article]