This paper critically reviews state-of-the-art and advanced methods for multi-spectral (MS) and panchromatic (Pan) image fusion based on either intensity-hue-saturation (IHS) transformation, or redundant multi-resolution analysis (MRA). In either cases, lower-resolution MS bands are sharpened by injecting details taken from the higher-resolution Pan image. Crucial point is modelling the relationships between detail coefficients of a generic MS band and the Pan image at the same resolution. Once calculated at the coarser resolution, where both types of data are available, such a model shall be extended to the finer resolution to weight the Pan details to be injected. Two injection models embedded in a generalised Laplacian pyramid (GLP) decomposition will be compared on a test set of very high resolution QuickBird MS+Pan data.
A CRITICAL REVIEW OF FUSION METHODS FOR TRUE COLOUR DISPLAY OF VERY HIGH RESOLUTION IMAGES OF URBAN AREAS / Luciano Alparone, Bruno Aiazzi, Stefano Baronti, Andrea Garzelli, Filippo Nencini. - CD-ROM. - (2006), pp. 1-5. (Intervento presentato al convegno 1st EARSeL Workshop of the SIG Urban Remote Sensing tenutosi a Humboldt-Universität zu Berlin nel 2-3 March 2006).
A CRITICAL REVIEW OF FUSION METHODS FOR TRUE COLOUR DISPLAY OF VERY HIGH RESOLUTION IMAGES OF URBAN AREAS
Luciano Alparone
;
2006
Abstract
This paper critically reviews state-of-the-art and advanced methods for multi-spectral (MS) and panchromatic (Pan) image fusion based on either intensity-hue-saturation (IHS) transformation, or redundant multi-resolution analysis (MRA). In either cases, lower-resolution MS bands are sharpened by injecting details taken from the higher-resolution Pan image. Crucial point is modelling the relationships between detail coefficients of a generic MS band and the Pan image at the same resolution. Once calculated at the coarser resolution, where both types of data are available, such a model shall be extended to the finer resolution to weight the Pan details to be injected. Two injection models embedded in a generalised Laplacian pyramid (GLP) decomposition will be compared on a test set of very high resolution QuickBird MS+Pan data.
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