3D Wavelet Subbands Mixing for Image Denoising. (22nd January 2008)

• Record Type: Journal Article
• Authors: Coupé, Pierrick; Hellier, Pierre; Prima, Sylvain; Kervrann, Charles; Barillot, Christian
• Other Names: Zhuang Tiange Academic Editor.
• Is Part Of: International journal of biomedical imaging. Volume 2008(2008)
• Publication Date: 2008-01-22
• Subjects: Diagnostic imaging -- Periodicals; Imaging systems in medicine -- Periodicals; Imagerie pour le diagnostic; Imagerie médicale; Diagnostic imaging; Imaging systems in medicine; Diagnostic Imaging -- Periodicals; Electronic journals; Periodicals; 616.0754
• DOI: 10.1155/2008/590183
• Languages: English
• ISSNs: 1687-4188

Abstract

Abstract : A critical issue in image restoration is the problem of noise removal while keeping the integrity of relevant image information. The method proposed in this paper is a fully automatic 3D blockwise version of the nonlocal (NL) means filter with wavelet subbands mixing. The proposed wavelet subbands mixing is based on a multiresolution approach for improving the quality of image denoising filter. Quantitative validation was carried out on synthetic datasets generated with the BrainWeb simulator. The results show that our NL-means filter with wavelet subbands mixing outperforms the classical implementation of the NL-means filter in terms of denoising quality and computation time. Comparison with wellestablished methods, such as nonlinear diffusion filter and total variation minimization, shows that the proposed NL-means filter produces better denoising results. Finally, qualitative results on real data are presented.