Parameter optimization for image denoising based on block matching and 3D collaborative filtering

Ramu Pedada; Emin Kugu; Jiang Li; Zhanfeng Yue; Yuzhong Shen

doi:10.1117/12.812202

27 March 2009 Parameter optimization for image denoising based on block matching and 3D collaborative filtering

Ramu Pedada, Emin Kugu, Jiang Li, Zhanfeng Yue, Yuzhong Shen

Proceedings Volume 7259, Medical Imaging 2009: Image Processing; 725925 (2009) https://doi.org/10.1117/12.812202
Event: SPIE Medical Imaging, 2009, Lake Buena Vista (Orlando Area), Florida, United States

Abstract

Clinical MRI images are generally corrupted by random noise during acquisition with blurred subtle structure features. Many denoising methods have been proposed to remove noise from corrupted images at the expense of distorted structure features. Therefore, there is always compromise between removing noise and preserving structure information for denoising methods. For a specific denoising method, it is crucial to tune it so that the best tradeoff can be obtained. In this paper, we define several cost functions to assess the quality of noise removal and that of structure information preserved in the denoised image. Strength Pareto Evolutionary Algorithm 2 (SPEA2) is utilized to simultaneously optimize the cost functions by modifying parameters associated with the denoising methods. The effectiveness of the algorithm is demonstrated by applying the proposed optimization procedure to enhance the image denoising results using block matching and 3D collaborative filtering. Experimental results show that the proposed optimization algorithm can significantly improve the performance of image denoising methods in terms of noise removal and structure information preservation.

Citation Download Citation

Ramu Pedada, Emin Kugu, Jiang Li, Zhanfeng Yue, and Yuzhong Shen "Parameter optimization for image denoising based on block matching and 3D collaborative filtering", Proc. SPIE 7259, Medical Imaging 2009: Image Processing, 725925 (27 March 2009); https://doi.org/10.1117/12.812202

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