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For the purpose of improving the spatial information of the QuickBird multispectral(MS) image while preserving spectral information, this paper proposed an approach for fusing QuickBird multispectral and panchromatic(Pan) images using nonsubsampled contourlet transform(NSCT). The low resolution QuickBird MS image is resampled to the fine scale of the Pan image and sharpened by injecting highpass directional...
In this paper, we propose a new variational model for image denoising, which contains two regularizing term. One regularizing term is BV norm, another is formulated in terms of summation in curvelet domain. Solving this new variational model results in an iterative algorithm, which combines naturally curvelet shrinkage with nonlinear anisotropic diffusion equations. Numerical examples show that the...
Image denoising is the first pre-processing step in analyzing and understanding images, and is crucial to acquire the high-quality image products. QuickBird, launched in October 18, 2001, is the highest spatial resolution remote sensing image until now, and can be used in various fields. In order to take the benefit of the high spatial resolution information of the QuickBird panchromatic images, this...
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