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Quality assessment and improvement of temporally composite products of remote sensed imagery by combination of Vegetation 1 and 2 images / Olivier Hagolle in Remote sensing of environment, vol 94 n° 2 (30/01/2005)  

Public [article]  inRemote sensing of environment > vol 94 n° 2 (30/01/2005) . - pp 172 - 186 Titre : Quality assessment and improvement of temporally composite products of remote sensed imagery by combination of Vegetation 1 and 2 images Type de document : Article/Communication Auteurs : Olivier Hagolle, Auteur ; A. Lobo, Auteur ; et al., Auteur Année de publication : 2005 Article en page(s) : pp 172 - 186 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image optique [Termes IGN] bruit (théorie du signal) [Termes IGN] erreur systématique [Termes IGN] fusion d'images [Termes IGN] image SPOT-Végétation [Termes IGN] indicateur de qualité [Termes IGN] qualité des données [Termes IGN] réflectance de surface [Termes IGN] variogramme Résumé : (Auteur) Global temporal composites of surface reflectances are among the most commonly used products of wide field-of-view satellite-borne instruments such as the Advanced Very High Resolution Radiometer (AVHRR). the MODerate resolution Imaging Spectroradiometer (MODIS) and VEGETATION. The multi-temporal and spatial consistencies of these composites are key elements for their usefulness. In this paper, we use two different criteria to evaluate the quality of existing and new temporal composite products in SPOT-VEGETATION imagery. The first criterion based on variograms. analyses the spatial characteristics of composite images, and the second one evaluates the quality of the time series based on the analysis of simultaneous imagery from VEGETATION 1 and VEGETATION 2. Thanks to these criteria, we show that the standard deviation of the errors that affect the surface reflectances of current composite products can be reduced by a factor greater than 2 using improved algorithms detailed in this paper. Finally, we produce multi- instrument composites by integrating images from both VEGETATION instruments to further improve the composite products. Numéro de notice : A2005-014 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.rse.2004.09.008 En ligne : https://doi.org/10.1016/j.rse.2004.09.008 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=27153 [article]