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Proceedings Paper

Pansharpening of multispectral images using filtering in Fourier domain
Author(s): Alper Akoguz; Burak Kurt; Sedef Kent Pinar
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Paper Abstract

In this study, there is examined filtering based pansharpening methods which means of using several 2D FIR filters in Fourier domain which implies that the filters are applied after taking 2D Discrete Fourier Transform of both multispectral and panchromatic image and after the pansharpening process in Fourier domain, the resulting pansharpened image is obtained with an inverse 2D DFT. In addition, these methods are compared with commonly used fusion methods which are combined as modulation based and component substitution based methods. The algorithms are applied to SPOT 6 co-registered image couples that were acquired simultaneously. Couples are chosen for three different regions which are a city image (Gebze/Turkey), a forest image (Istanbul/Turkey) and an agriculture field image (Sanliurfa/Turkey) in order to analyse the methods in different regional characteristics. These methods are compared by the fusion quality assessments that have common acceptance in community. The results of these quality assessments shows the filtering based methods had the best scores among the traditional methods.

Paper Details

Date Published: 23 October 2014
PDF: 14 pages
Proc. SPIE 9244, Image and Signal Processing for Remote Sensing XX, 92441X (23 October 2014); doi: 10.1117/12.2067255
Show Author Affiliations
Alper Akoguz, Istanbul Technical Univ. (Turkey)
Burak Kurt, ASELSAN Inc. (Turkey)
Sedef Kent Pinar, Istanbul Technical Univ. (Turkey)

Published in SPIE Proceedings Vol. 9244:
Image and Signal Processing for Remote Sensing XX
Lorenzo Bruzzone, Editor(s)

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