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Proceedings Paper

Interband detail modeling for multiresolution fusion of very high resolution multispectral images
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Paper Abstract

This paper addresses multispectral (MS) band sharpening based on undecimated multiresolution analysis (MRA). The coarse MS bands are sharpened by injecting highpass details taken from a high resolution panchromatic (Pan) image. Besides the MRA, crucial point is modeling 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 extrapolated to the finer resolution in order to weight the Pan details to be injected. The goal is that the merged MS images are most similar to what the MS sensor would collect if it had the same resolution as the broadband Pan imager. Three injection models embedded in an "`a trous" wavelet decomposition will be described and compared on a test set of very high resolution QuickBird MS + Pan data. Fusion comparisons on spatially degraded data, of which higher-resolution true MS data are available for reference, will be presented.

Paper Details

Date Published: 5 February 2004
PDF: 6 pages
Proc. SPIE 5238, Image and Signal Processing for Remote Sensing IX, (5 February 2004); doi: 10.1117/12.541193
Show Author Affiliations
Luciano Alparone, Univ. degli Studi di Firenze (Italy)
Andrea Garzelli, Univ. degli Studi di Siena (Italy)
Filippo Nencini, Univ. degli Studi di Siena (Italy)
Bruno Aiazzi, Institute of Applied Physics Nello Carrara, CNR (Italy)
Stefano Baronti, Institute of Applied Physics Nello Carrara, CNR (Italy)

Published in SPIE Proceedings Vol. 5238:
Image and Signal Processing for Remote Sensing IX
Lorenzo Bruzzone, Editor(s)

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