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Remote Sensing Technology and Application  2009, Vol. 24 Issue (3): 362-369    DOI: 10.11873/j.issn.1004-0323.2009.3.362
The Discrete Contourlet RS Image Fusion and Its Pilot Study inQuickBird Image Based on LP and DFB Structures
WEI Wei1,ZHAO Jun1,WANG Xu-feng2
(1.Development and Application Research Center of GIS,Northwest Normal University,
Lanzhou 730070,Gansu,China|2.Cold and Arid Regions Environmental and Engineering Research
Institute,Chinese Academy of Sciences,Lanzhou 730000,Gansu,China)
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Image fusion is a very important research field in remote sensing.Recently developed contourlet transform can offer a much richer set of direct ions and shapes,and thus it is more effective than wavelet in capturing smooth contours and geometric structures in images.A novel method of fusing panchromatic and multispectral remote sensing images is proposed based on contourlet transform.Using the laplacian pyramid(LP)analysis to capture the low frequency information of images,and directional filter bank(DFB)to obtain the high frequency information of images,and using an image fusion scheme based on arithmetical average and plus-power to construct contrast pyramid.Fusion images were obtained through inverse contourlet transform.A laplacian pyramid and directional filter bank(PDFB)are given in this article.On one hand,with the proposed scheme,the contourlet transform as a new mathematical tool is introduced to remote sensing image fusion area.On the other hand,the algorithm is used QuickBird image experimentation.Besides,using information entropy,distorted tolerance,difference index,correlation coefficient,standard difference etc to evaluate and analyze the fusion results.The experimental results show that the proposed method can effectively retain spectral information.It can also improve spatial resolution and spatial information of multispectral images.

Key words:  Image fusion      Laplacian      Pyramid directional filter bank      Contourlet transform      QuickBird     
Received:  07 November 2008      Published:  20 January 2010
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WEI Wei,ZHAO Jun,WANG Xu\|feng. The Discrete Contourlet RS Image Fusion and Its Pilot Study inQuickBird Image Based on LP and DFB Structures. Remote Sensing Technology and Application, 2009, 24(3): 362-369.

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