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Spatially adaptative multi-resolution multispectral image fusion / J.H. Park in International Journal of Remote Sensing IJRS, vol 25 n° 23 (December 2004)  

Public [article]  inInternational Journal of Remote Sensing IJRS > vol 25 n° 23 (December 2004) . - pp 5491 - 5508 Titre : Spatially adaptative multi-resolution multispectral image fusion Type de document : Article/Communication Auteurs : J.H. Park, Auteur ; M.G. Kang, Auteur Année de publication : 2004 Article en page(s) : pp 5491 - 5508 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image optique [Termes IGN] algorithme de fusion [Termes IGN] distorsion d'image [Termes IGN] fusion d'images [Termes IGN] image Landsat-ETM+ [Termes IGN] image multibande [Termes IGN] image panchromatique [Termes IGN] image spectrale [Termes IGN] limite de résolution géométrique Résumé : (Auteur) Due to the performance limit of remote sensing systems, multispectral images have limited spatial resolution. Their spatial resolution can be improved by merging them with higher resolution image data. A fundamental problem frequently occurring in existing fusion processes, however, is the distortion of spectral information. This paper presents a spatially adaptive image fusion algorithm which produces visually natural images and retains the quality of local spectral information as well. High frequency information of the high resolution image to be inserted to the resampled multispectral images is controlled by adaptive gains to incorporate the difference of local spectral characteristics between the high and the low resolution images into the fusion. Each gain is estimated to minimize the 12-norm of the error between the original and the estimated pixel values defined in a spatially adaptive window of which the weights are proportional to the spectral correlation measurements of the corresponding regions. This method is applied to a set of co-registered Landsat 7 Enhanced Thematic Mapper (ETM)+ panchromatic and multispectral image data. The experimental results show that high resolution images can be synthesized by the proposed method, which successfully preserves spectral content of the multispectral images. Numéro de notice : A2004-480 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/01431160412331270830 En ligne : https://doi.org/10.1080/01431160412331270830 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=26998 [article]

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