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ICIP
2001
IEEE

Variable-conductance, level-set curvature for image denoising

12 years 1 months ago
Variable-conductance, level-set curvature for image denoising
This paper describes a partial differential equation for denoising images. The proposed method is demonstrably superior to anisotropic diffusion (and it's many variations) for denoising images that are approximatelypiecewise constant. The method relies on an equation that is the level-set equivalent of the anisotropic diffusion equation proposed by Perona and Malik [1]. This proposed equation has come up in the literature, but has failed to fully utilized due to a lack of analysis and the need for a stable, accurate numerical implementation. Our analysis shows that the proposed method is more aggressive than anisotropic diffusion at enhancing and preserving edges, and is less sensitive to the edge contrast parameter. Empirical results confirm these advantages, and show that for certain classes of images, one should always prefer the proposed method over anisotropic diffusion.
Ross T. Whitaker, Xinwei Xue
Added 25 Oct 2009
Updated 27 Oct 2009
Type Conference
Year 2001
Where ICIP
Authors Ross T. Whitaker, Xinwei Xue
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