Mixed impulse and Gaussian noise removal using detail-preserving regularization

Xueying Zeng; Lihua Yang

doi:10.1117/1.3485756

1 September 2010 Mixed impulse and Gaussian noise removal using detail-preserving regularization

Xueying Zeng, Lihua Yang

Author Affiliations +

Optical Engineering, Vol. 49, Issue 9, 097002 (September 2010). https://doi.org/10.1117/1.3485756

Abstract

Over the years, numerous methods have been proposed separately for restoring images corrupted by either impulse noise or Gaussian noise. Nevertheless, because of the distinct nature of both types of degradation processes, not much work has been developed to effectively remove mixed noise from images, a problem that is commonly found in practice. To alleviate this problem, we propose a two-stage approach based on impulse detectors and detail-preserving regularization. We employ the detectors to identify impulse noise, and then restore them and smooth the remaining Gaussian noise simultaneously based on regularization framework. A novel error norm that can adaptively mimick traditional l1 and l2 norms is used in the regularization process. This adaptivity enables our approach to be universally capable of removing various degrees of impulse noise and mixed noise, while preserving fine image details well. Extensive experiments have been conducted to test the proposed approach and shown its improvements over the algorithms existing in the literature.

©(2010) Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation Download Citation

Xueying Zeng and Lihua Yang "Mixed impulse and Gaussian noise removal using detail-preserving regularization," Optical Engineering 49(9), 097002 (1 September 2010). https://doi.org/10.1117/1.3485756

Published: 1 September 2010

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