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Evaluation and Analysis on Image Fusion of ETM |
YU Jun-ming 1,2, ZHOU Yi1 , WANG Shi-xin1, WANG Li-tao1 |
1. Institute of Remote Sensing Applications, Chinese Academy of Sciences, Beijing 100101,China;
2. Graduate University of Chinese Academy of Sciences, Beijing 100101, China |
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Abstract In this paper, five image fusion algorithms including HIS transformation,Brovey transformation,Weighting fusion, SFIM ransformation and ISVR ransformation are experimented between Landsat-7 ETMPAN band and multi-spectral bands. The result f different fusion methods is evaluated qualitatively and quantitatively by comparing the spectral fidelity and the patial resolution.The study indicates that HIS transformation distorts the spectral quality most seriously. Brovey ransformation is not very nice both in retaining the spectral quality and improving the spatial resolution. The result of eighting fusion depends on the weighting seriously. Smoothing Filter-Based Intensity Modulation(SFIM) distorts the pectral quality greatly, however,it can not improve the spatial resolution. Improved Synthetic Variable Ratio(ISVR) is very fit for fusion with ETM images on the who1e.ISVR technique distorts the spectral quality slightly,as well as improves the spatial resolution obviously. The advantage is that it considers the relation of panchromatic band and ultispectral bands, which is ignored by other methods in this paper.
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Received: 03 April 2007
Published: 03 September 2010
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