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Table 3 PSNRs of Anscombe and L 2 distance based block similarity vs. Poisson maximum-likelihood ratios

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

Input Peak PSNR [dB]   np- π N8 pml- π N8   np- π N16 pml- π N16
Silicon (disloc.) 6 2.70   18.46 18.59   17.29 17.48
Silicon 6 3.62   21.63 21.81   23.41 23.59
Gallium nitride 7 6.11   23.24 23.25   24.80 24.84
Silicon 9 6.65   23.92 24.07   26.15 26.22
Silicon 11 9.63   24.02 24.06   26.00 25.92
Silicon (disloc.) 11 9.72   24.39 24.50   26.64 26.55
Gallium nitride 12 10.15   26.13 26.19   27.90 27.91
  1. A comparison between non-local adaptive periodic block matching performed using L 2 distances in the Anscombe transformed domain (np- π N) and Poisson maximum-likelihood ratios of the true electron counts (pml- π N) 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.