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Multimedia Tools and Applications

, Volume 71, Issue 3, pp 1529–1558 | Cite as

A denoising algorithm via wiener filtering in the shearlet domain

  • Pengfei Xu
  • Qiguang Miao
  • Xing Tang
  • Junying Zhang
Article

Abstract

An image denoising algorithm via wiener filtering in the shearlet domain is proposed in this paper, it makes full use of the advantages of them. Shearlets have the features of directionality, localization, anisotropy and multiscale, the image can be decomposed more accurately, and the noise information locates at the high frequency contents in the frequency spectrum, which can help the removal of noise. The wiener filtering is based on minimizing the mean square error criteria; and it has a good performance on removing the Gaussian white noise. So the combination between them can remove noise more effectively. The noisy image is decomposed by the shearlet transform at any scales and in any directions firstly, the high and low frequency coefficients are thus acquired. And then, in the shearlet domain, the high frequency parts are filtered by wiener filtering. Finally, the inverse shearlet transform is adopted to obtain the denoised image. At the end of paper, the experiments show that the proposed algorithm could get better results than others.

Keywords

Image denoising Shearlets Shearlet domain Wiener filtering Minimizing the mean square error criteria Shrinkage factor 

Notes

Acknowledgments

The authors would like to thank the anonymous reviewers for their helpful comments and advices which contributed much to the improvement of this paper. The work was jointly supported by the National Natural Science Foundations of China under grant No. 61072109, 61272280, 41271447, the Fundamental Research Funds for the Central Universities under grant No. K5051203020 and K5051203001, the Creative Project of the Science and Technology State of xi’an under grant No. CXY1133(1) and CXY1119(6).

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Copyright information

© Springer Science+Business Media New York 2012

Authors and Affiliations

  • Pengfei Xu
    • 1
  • Qiguang Miao
    • 1
  • Xing Tang
    • 1
  • Junying Zhang
    • 1
  1. 1.School of ComputerXidian UniversityXi’anChina

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