This paper is devoted to a novel hyperparameters estimator for bayesian denoising of images using the Bessel
K Forms prior which we recently developed. More precisely, this approach is based on the EM algorithm.
The simulation results show that this estimator offers good performances and is slightly better compared to
the cumulant-based estimator suggested in. A comparative study is carried to show the effectiveness of our
bayesian denoiser based on EM algorithm compared to other denoisers developed in both classical and bayesian
contexts. Our study has been effected on natural and medical images for gaussian and poisson noise removal.
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