An Anisotropic Diffusion PDE for Noise Reduction and Thin Edge Preservation
نویسندگان
چکیده
In this paper, an image denoising operator de ned by a non-linear partial di erential equation(PDE) is presented. Similar to the operators proposed by Perona, Malik and Catt e et al., it can remove noise, enhance step-like edges and keep the locality of the edges. Its extra ability is to keep thin edges. The criterion for stopping time is also investigated. The new operator is capable of removing rather high uniform noise without sacri cing the details of the image. If the noise is Gaussian with not too high standard deviation, the result is also quite good.
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