DMCA
A comparative analysis of image fusion methods (2005)
| Venue: | IEEE Trans. Geosci. Remote Sens |
| Citations: | 86 - 1 self |
BibTeX
@ARTICLE{Wang05acomparative,
author = {Zhijun Wang and Djemel Ziou and Costas Armenakis and Deren Li and Qingquan Li},
title = {A comparative analysis of image fusion methods},
journal = {IEEE Trans. Geosci. Remote Sens},
year = {2005}
}
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Abstract
Abstract—There are many image fusion methods that can be used to produce high-resolution mutlispectral images from a high-resolution panchromatic image and low-resolution mut-lispectral images. Starting from the physical principle of image formation, this paper presents a comprehensive framework, the general image fusion (GIF) method, which makes it possible to categorize, compare, and evaluate the existing image fusion methods. Using the GIF method, it is shown that the pixel values of the high-resolution mutlispectral images are determined by the corresponding pixel values of the low-resolution panchromatic image, the approximation of the high-resolution panchromatic image at the low-resolution level. Many of the existing image fusion methods, including, but not limited to, intensity–hue–satu-ration, Brovey transform, principal component analysis, high-pass filtering, high-pass modulation, the à trous algorithm-based wavelet transform, and multiresolution analysis-based intensity modulation (MRAIM), are evaluated and found to be particular cases of the GIF method. The performance of each image fusion method is theoretically analyzed based on how the corresponding low-resolution panchromatic image is computed and how the modulation coefficients are set. An experiment based on IKONOS images shows that there is consistency between the theoretical analysis and the experimental results and that the MRAIM method synthesizes the images closest to those the corresponding multisensors would observe at the high-resolution level. Index Terms—General image fusion (GIF) method, image for-mation principle, image fusion. I.
Keyphrases
image fusion method comparative analysis gif method high-resolution panchromatic image high-resolution mutlispectral image general image fusion mraim method principal component analysis image formation modulation coefficient particular case corresponding low-resolution panchromatic image theoretical analysis high-pass filtering multiresolution analysis-based intensity modulation low-resolution panchromatic image physical principle high-resolution level intensity hue satu-ration image fusion brovey transform high-pass modulation pixel value trous algorithm-based wavelet transform many image fusion method comprehensive framework ikonos image image for-mation principle low-resolution level corresponding pixel value low-resolution mut-lispectral image corresponding multisensors experimental result index term general image fusion
