Skip to main content
. Author manuscript; available in PMC: 2014 Mar 30.
Published in final edited form as: IEEE Trans Image Process. 2012 Sep 20;22(8):3192–3203. doi: 10.1109/TIP.2012.2216278

Fig. 7.

Fig. 7

Impact of the parameters on reconstruction accuracy: We consider the denoising of noisy Shepp-Logan phantom image with a SNR of 16 dB. We plot the change in the SNR of the denoised image as a function of the search window size Nw. The blue, red, and black curves correspond to Np = 3, Np = 5, and Np = 7, respectively. The plot shows that SNR of the images degrades with increasing Np. This is expected since the number of similar patches decrease with increasing patch size. We observe that the SNR also decreases with increasing window size, except for the non-local TV distance metric with Nw = 7. See text for more explanation.