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Fusion Techniques Comparison of GeoEye-1 Imagery

  • Kim, Yong-Hyun (Satellite Data application Department, Satellite Information Research Institute, Korea Aerospace Research Institute) ;
  • Kim, Yong-Il (Department of Civil and Environmental Engineering, Seoul National University) ;
  • Kim, Youn-Soo (Satellite Data application Department, Satellite Information Research Institute, Korea Aerospace Research Institute)
  • Published : 2009.12.30

Abstract

Many satellite image fusion techniques have been developed in order to produce a high resolution multispectral (MS) image by combining a high resolution panchromatic (PAN) image and a low resolution MS image. Heretofore, most high resolution image fusion techniques have used IKONOS and QuickBird images. Recently, GeoEye-1, offering the highest resolution of any commercial imaging system, was launched. In this study, we have experimented with GeoEye-1 images in order to evaluate which fusion algorithms are suitable for these images. This paper presents compares and evaluates the efficiency of five image fusion techniques, the $\grave{a}$ trous algorithm based additive wavelet transformation (AWT) fusion techniques, the Principal Component analysis (PCA) fusion technique, Gram-Schmidt (GS) spectral sharpening, Pansharp, and the Smoothing Filter based Intensity Modulation (SFIM) fusion technique, for the fusion of a GeoEye-1 image. The results of the experiment show that the AWT fusion techniques maintain more spatial detail of the PAN image and spectral information of the MS image than other image fusion techniques. Also, the Pansharp technique maintains information of the original PAN and MS images as well as the AWT fusion technique.

Keywords

References

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