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Journal of Electronic Imaging

Pixel-wise decay parameter adaption for nonlocal means image denoising
Author(s): Yi Zhan; Mingyue Ding; Xuming Zhang
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Paper 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.

Paper Details

Date Published: 19 December 2013
PDF: 8 pages
J. Electron. Imag. 22(4) 043034 doi: 10.1117/1.JEI.22.4.043034
Published in: Journal of Electronic Imaging Volume 22, Issue 4
Show Author Affiliations
Yi Zhan, Huazhong Univ. of Science and Technology (China)
Mingyue Ding, Huazhong Univ. of Science and Technology (China)
Xuming Zhang, Huazhong Univ. of Science and Technology (China)

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