The EM Method in a Probabilistic Wavelet-Based MRI Denoising

Figure 7

Example of experiment 1 with parameter . (a) Noiseless image; (b) noisy image; (c) noisy image filtered by Villullas-Martin’s method; (d) noisy image filtered by Nowak’s method; (e) noisy image filtered by Donoho-Johnstone’s method; (f) noisy image filtered by Awate-Whitaker’s method with Gaussian model; (g) noisy image filtered by Awate-Whitaker’s method with Rician model; (h) noisy image filtered by nonlocal means method.

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