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Table 4 Tukey t-test results for objective evaluation of available techniques (P.A. is the proposed approach)

From: Non-photorealistic neural sketching

Contrast Significant difference for α=0.05
PSNR FoM SSIM
P.A. Vs. FDoG No No No
P.A. Vs. DoG No Yes Yes
FDoG Vs. DoG Yes No Yes