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dc.contributor.authorNúñez de Murga, Jorge, 1955-cat
dc.contributor.authorOtazu Porter, Xaviercat
dc.contributor.authorFors Aldrich, Octavicat
dc.contributor.authorPrades, Albertcat
dc.contributor.authorPalà, Vicençcat
dc.contributor.authorArbiol, Románcat
dc.description.abstractThe standard data fusion methods may not be satisfactory to merge a high-resolution panchromatic image and a low-resolution multispectral image because they can distort the spectral characteristics of the multispectral data. The authors developed a technique, based on multiresolution wavelet decomposition, for the merging and data fusion of such images. The method presented consists of adding the wavelet coefficients of the high-resolution image to the multispectral (low-resolution) data. They have studied several possibilities concluding that the method which produces the best results consists in adding the high order coefficients of the wavelet transform of the panchromatic image to the intensity component (defined as L=(R+G+B)/3) of the multispectral image. The method is, thus, an improvement on standard intensity-hue-saturation (IHS or LHS) mergers. They used the ¿a trous¿ algorithm which allows the use of a dyadic wavelet to merge nondyadic data in a simple and efficient scheme. They used the method to merge SPOT and LANDSATTM images. The technique presented is clearly better than the IHS and LHS mergers in preserving both spectral and spatial information.eng
dc.relation.isformatofReproducció del document publicat a
dc.relation.ispartofIEEE Transactions on Geoscience and Remote Sensing, 1999, vol. 37, núm. 3 (Part 1), p.
dc.rights(c) IEEE, 1999cat
dc.sourceArticles publicats en revistes (Física Quàntica i Astrofísica)-
dc.subject.classificationProcessament d'imatgescat
dc.subject.otherGeophysical signal processingeng
dc.subject.otherGeophysical techniqueseng
dc.subject.otherImage processingeng
dc.subject.otherImage resolutioneng
dc.subject.otherMultidimensional signal processingeng
dc.subject.otherRemote sensingeng
dc.subject.otherSensor fusioneng
dc.subject.otherTerrain mappingeng
dc.subject.otherWavelet transformseng
dc.titleMultiresolution-based image fusion with additive wavelet decompositioneng
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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