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Remote Sensing Technology and Application  2008, Vol. 23 Issue (5): 551-555    DOI: 10.11873/j.issn.1004-0323.2008.5.551
    
A Comparison of Fusing Methods of ETM+ andSPOT-5 PAN Images for Geohazrd Detection
XU Ling 1,YANG Xin-rui 2,CHEN Jian 1
(1.Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,China;2.Chinese Academy of Meteorological Sciences,Beijing 100081,China)
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Abstract  

The fused image of ETM+ and SPOT-5 Pan is a suitable data source for geohazard detection because it has abundant spectral and spatial textural information.However,the spatial resolution of SPOT-5 Pan is much higher than that of ETM+ multi-spectral images,a suitable fusing method should be selected to fuse SPOT-5 Pan with ETM+ images to obtain a fused image with high spatial and spectral resolutions.In this paper,a comparison has been made using various fusing methods,including IHS,Brovey,PCA and Gram-Schmidt transformation methods.Subjective appraisal and horizontal spectral profile have been adopted to assess the quality of the fused images.It is concluded that PCA and Gram-Schmidt transformation methods are suitable for fusing SPOT-5 Pan and ETM+ images,and that it would be better for  ETM+  spectral bands to be fused with ETM+  Pan image,and then fused with SPOT-5 Pan image.

Key words:   ETM+      SPOT-5      Image fusing      Geohazard interpretation     
Received:  27 February 2008      Published:  07 November 2011
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Cite this article: 

XU Ling,YANG Xin-rui,CHEN Jian. A Comparison of Fusing Methods of ETM+ andSPOT-5 PAN Images for Geohazrd Detection. Remote Sensing Technology and Application, 2008, 23(5): 551-555.

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http://www.rsta.ac.cn/EN/10.11873/j.issn.1004-0323.2008.5.551     OR     http://www.rsta.ac.cn/EN/Y2008/V23/I5/551

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