MRI Denoising Based on a Non-Parametric Bayesian Image Sparse Representation Method

Abstract:

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Magnetic Resonance images are often corrupted by Gaussian noise which highly affects the quality of MR images. In this paper, a Non-Parametric hierarchical Bayesian image sparse representation method is proposed to wipe out Gaussian distribution noise coupling in MR images. In this method a spike-slab prior is imposed on sparse coefficients, and a redundant dictionary is learned from the corrupted image. Experimental results show that the method not only improves the effect of MRI denoising, but also can obtain good estimation of the noise variance. Compared to non-local filter method, this model shows better visual quality as well as higher PSNR.

Info:

Periodical:

Advanced Materials Research (Volumes 219-220)

Edited by:

Helen Zhang, Gang Shen and David Jin

Pages:

1354-1358

DOI:

10.4028/www.scientific.net/AMR.219-220.1354

Citation:

X. B. Chen et al., "MRI Denoising Based on a Non-Parametric Bayesian Image Sparse Representation Method", Advanced Materials Research, Vols. 219-220, pp. 1354-1358, 2011

Online since:

March 2011

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Price:

$35.00

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