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Adaptive fourth-order partial differential equation filter for image denoising. (English) Zbl 1218.35006
Summary: To overcome the staircasing effects and simultaneously avoid edge blurring, this paper describes a fourth-order partial differential equation based edge-preserving regularization filter for noise removal. This technique is closely related to the nonlinear anisotropic diffusion. Compared results distinctly demonstrate the superiority of our proposed scheme over the LLT model, in terms of removing noise while sharply maintaining the edge features.
35A15Variational methods (PDE)
94A08Image processing (compression, reconstruction, etc.)
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