The EM Method in a Probabilistic Wavelet-Based MRI Denoising

Figure 4

Mixture approximated model distributions (Detail/Laplace = green graph, Noise/Gauss = red graph) superimposed on real image wavelet coefficients histogram (blue bar chart) at level/orientation NEX: (a) 1/horizontal 1; (b) 1/horizontal 10; (c) 1/horizontal 20; (d) 2/vertical 1; (e) 2/vertical 10; (f) 2/vertical 20.

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