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Multitemporal synthetic aperture radar (SAR) images have been increasingly used in change detection studies. However, the presence of speckle is the main disadvantage of this type of data. To reduce speckle, many local adaptive filters have been developed. Although these filters are effective in reducing speckle in homogeneous areas, their use is often accompanied with the degradation of spatial details...
We present recent theoretical and practical developments aimed at enhancing the performance of the discrete universal denoiser (DUDE) on grayscale images. In particular, a new statistical model for images, formalizing the assumptions underlying the use of prediction, together with a more robust use of pre-filtering and iteration have led to significant improvements in denoising performance for certain...
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