NDLI: Using QNR index as decision criteria for improving fusion quality

Content Provider	IEEE Xplore Digital Library
Author	Khan, M.M. Chanussot, J. Siouar, B. Osman, J.
Copyright Year	2008
Description	Author affiliation: GIPSA-Lab. Dept. of Images & Signals, Grenoble Inst. of Technol., Grenoble (Khan, M.M.; Chanussot, J.; Siouar, B.; Osman, J.)
Abstract	Pansharpening is the process of improving spatial resolution of multispectral (MS) satellite images using the spatial details of a high resolution panchromatic (PAN) image. Quality without reference (QNR) index is a tool which can be used to determine the global quality of the fused images without requiring a high resolution reference MS image. Over the years different pansharpening methods have been proposed using different criteria to obtain improved fusion quality. Since QNR can be used to determine the quality of fused images at full resolution without requiring a reference high resolution MS image, it may be used as a decision criterion to select the best fused regions, given a number of different fused images. In this paper we propose to use the QNR index to determine the local fusion quality. We also extend this property of local quality assessment to select regions among various fused images of the same region to obtain a single image with the best quantitative measures. The proposed decision fusion is tested on Pleiades and Quickbird satellite images fused by recently proposed fusion methods.
Starting Page	149
Ending Page	154
File Size	575422
Page Count	6
File Format	PDF
ISBN	9781424432998
DOI	10.1109/ICAST.2008.4747703
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-11-29
Publisher Place	Pakistan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Degradation Image resolution Artificial satellites Space technology Feature extraction Quality assessment Spatial resolution Signal resolution Testing Principal component analysis
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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