Abstract
This paper proposes an effective color image denoising algorithm using the combination color monogenic wavelet transform (CMWT) with a trivariate shrinkage filter. The CMWT coefficients are one order of magnitude with three phases: two phases encode the local color information while the third contains geometric information relating to texture within the color image. In the CMWT domain, a trivariate Gaussian distribution is applied to capture statistical dependencies between the CMWT coefficients, and then a trivariate shrinkage filter is derived using a maximum a posteriori estimator. The performance of the proposed algorithm is experimentally verified using a variety of color test images with a range of noise levels in terms of PSNR and visual quality. The experimental results demonstrate that the proposed algorithm is equal to or better than current state-of-the-art algorithms in both visual and quantitative performance.
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Acknowledgments
This work is partially supported by National Natural Science Foundation of China under Grant Nos.(61563037, 61402218); Jiangxi Provincial Natural Science Foundation of China under Grant No. (20151BAB207031); Department of Education Science and Technology of Jiangxi Province under Grant No. (GJJ150755).
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Gai, S., Zhang, Y., Yang, C. et al. Color monogenic wavelet transform for multichannel image denoising. Multidim Syst Sign Process 28, 1463–1480 (2017). https://doi.org/10.1007/s11045-016-0426-z
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DOI: https://doi.org/10.1007/s11045-016-0426-z