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- W1479969019 abstract "Diffusion processes driven by anisotropic diffusion tensors are known to be well-suited for structure-preserving denoising. However, numerical implementations based on finite differences introduce unwanted blurring artifacts that deteriorate these favourable filtering properties. In this paper we introduce a novel discretisation of a fairly general class of anisotropic diffusion processes on a 2-D grid. It leads to a locally semi-analytic scheme (LSAS) that is absolutely stable, simple to implement and offers an outstanding sharpness of filtered images. By showing that this scheme can be translated into a 2-D Haar wavelet shrinkage procedure, we establish a connection between tensor-driven diffusion and anisotropic wavelet shrinkage for the first time. This result leads to coupled shrinkage rules that allow to perform highly anisotropic filtering even with the simplest wavelets." @default.
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- W1479969019 date "2006-01-01" @default.
- W1479969019 modified "2023-09-25" @default.
- W1479969019 title "From Tensor-Driven Diffusion to Anisotropic Wavelet Shrinkage" @default.
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- W1479969019 doi "https://doi.org/10.1007/11744023_31" @default.
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