Evaluation of Weighted Nuclear Norm Minimization Algorithm for Ultrasound Image Denoising

Figure 6

Histograms of input, noisy, and filtered images: (a) input image, (b) noisy version of (a), (c) Gaussian filter filtered, (d) median filtered, (e) average filtered, (f) anisotropic diffusion filtered, and (g) WNNM filtered; x-axis represents pixel intensity, and y-axis represents the frequency or count of the pixel intensities.

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