Pixel-wise decay parameter adaption for nonlocal means image denoising

Yi Zhan; Mingyue Ding; Xuming Zhang

doi:10.1117/1.JEI.22.4.043034

19 December 2013 Pixel-wise decay parameter adaption for nonlocal means image denoising

Yi Zhan, Mingyue Ding, Xuming Zhang

Author Affiliations +

Journal of Electronic Imaging, Vol. 22, Issue 4, 043034 (December 2013). https://doi.org/10.1117/1.JEI.22.4.043034

Abstract

The globally fixed decay parameter is generally adopted in the traditional nonlocal means method for similarity computation, which has a negative influence on its restoration performance. To address this problem, we propose to adaptively tune the decay parameter for each image pixel using the golden section search method based on the pixel-wise minimum mean square error, which can be estimated using the prefiltered result and the estimated noise component. The quantitative and subjective comparisons of restoration performance among the proposed method and several state-of-the-art methods indicate that it can achieve a better performance in noise reduction, artifact avoidance, and detail preservation.

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Yi Zhan, Mingyue Ding, and Xuming Zhang "Pixel-wise decay parameter adaption for nonlocal means image denoising," Journal of Electronic Imaging 22(4), 043034 (19 December 2013). https://doi.org/10.1117/1.JEI.22.4.043034

Published: 19 December 2013

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