Multilevel Threshold Based Image Denoising in Curvelet Domain

@article{Nguyen2010MultilevelTB,
  title={Multilevel Threshold Based Image Denoising in Curvelet Domain},
  author={Thanh Binh Nguyen and Ashish Khare},
  journal={Journal of Computer Science and Technology},
  year={2010},
  volume={25},
  pages={632-640}
}
In this paper, we propose a multilevel thresholding technique for noise removal in curvelet transform domain which uses cycle-spinning. Most of uncorrelated noise gets removed by thresholding curvelet coefficients at lowest level, while correlated noise gets removed by only a fraction at lower levels, so we used multilevel thresholding on curvelet coefficients. The threshold in the proposed method depends on the variance of curvelet coefficients, the mean and the median of absolute curvelet… CONTINUE READING
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