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Table 1 PSNRs of local vs. adaptive periodic block matching

From: Poisson noise removal from high-resolution STEM images based on periodic block matching

Input Peak PSNR [dB]   np-l8 np- π N8   np-l16 np- π N16
Silicon (disloc.) 6 2.70   17.96 18.47   15.07 17.16
Silicon 6 3.62   20.60 21.65   20.68 23.39
Gallium nitride 7 6.11   21.71 23.26   20.53 24.76
Silicon 9 6.65   22.25 23.92   22.60 26.15
Silicon 11 9.63   23.59 24.02   25.23 26.00
Silicon (disloc.) 11 9.72   23.78 24.39   25.30 26.64
Gallium nitride 12 10.15   24.30 26.13   24.72 27.90
Silicon 18 12.58   25.76 26.74   26.65 27.99
Silicon (disloc.) 15 12.73   25.68 26.34   26.64 27.65
Gallium nitride 17 13.25   26.18 27.86   26.51 29.04
Silicon 21 13.64   26.51 27.80   26.62 28.86
Silicon 21 15.12   27.05 27.74   27.91 28.76
Silicon 34 16.68   28.23 29.53   28.25 30.25
Silicon (disloc.) 49 19.81   29.49 29.94   29.90 30.20
Silicon (disloc.) 89 22.66   31.16 31.48   31.53 31.77
Silicon (disloc.) 92 22.73   31.14 31.39   31.50 31.67
Silicon 88 22.75   31.25 31.56   31.60 31.80
Silicon 88 22.88   31.40 31.74   31.78 31.99
Gallium nitride 95 23.23   32.28 33.58   32.30 33.89
  1. A comparison between local (np-l ) and periodic (np- π N) block matching with block sizes n =8 (middle columns) and n =16 (right columns). The best result within each row and the corresponding columns (separated by wide space) is in bold face.