FFT-enhanced IHS transform method for fusing |
TAG:FFT-IHS |
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添加日期：2009-4-15 |
出 处：中国图像图形网 |
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文件大小：1.67 MB |
| 关键词：FFT-IHS |
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简介：Existing image fusion techniques such as the intensity–hue–saturation (IHS) transform and principal components analysis
(PCA) methods may not be optimal for fusing the new generation commercial high-resolution satellite images such as Ikonos and
QuickBird. One problem is color distortion in the fused image, which causes visual changes as well as spectral differences between
the original and fused images. In this paper, a fast Fourier transform (FFT)-enhanced IHS method is developed for fusing new
generation high-resolution satellite images. This method combines a standard IHS transform with FFT filtering of both the
panchromatic image and the intensity component of the original multispectral image. Ikonos and QuickBird data are used to assess
the FFT-enhanced IHS transform method. Experimental results indicate that the FFT-enhanced IHS transform method may improve
upon the standard IHS transform and the PCA methods in preserving spectral and spatial information. |
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