Fig. 8

Denoising results of the MRI1 image (\(\sigma \approx 30)\); (a) Reference image, (b) ONLM, (c) Z-NLM, (d) ANLM, (e) DCT-ACO, (f) IDM-PM, (g) NSCT-BT, (h) FDCT, (i) BP-MEC, (j) CNCL, (k) UDLF, (l) NGN, (m) SDPM, (n) NDiff, (o) OD-CNN, and (p) ours.