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Table 2 Objective evaluation of proposed approach

From: Non-photorealistic neural sketching

Measure/Statistics GrayWorld Retinex Histogram stretch
Y Channel V Channel Y Channel V Channel Y Channel V Channel
Gauss.
G1
Mean
G2
Gauss.
G3
Mean
G4
Gauss.
G5
Mean
G6
Gauss.
G7
Mean
G8
Gauss.
G9
Mean
G10
Gauss.
G11
Mean
G12
PSNR \(\bar{X}\) 8.0598 8.1130 8.0096 8.0603 7.0912 7.2380 7.2193 7.3628 7.9911 8.0472 7.9899 8.0395
s 1.3808 1.3611 1.3914 1.3781 1.0045 1.0051 1.0499 1.0480 1.3433 1.3270 1.1182 1.1041
SSIM \(\bar{X}\) 0.1763 0.1756 0.1744 0.1739 0.1667 0.1672 0.1681 0.1684 0.1757 0.1750 0.1765 0.1759
s 0.0364 0.0367 0.0382 0.0384 0.0297 0.0298 0.0301 0.0306 0.0361 0.0364 0.0329 0.0330
FoM \(\bar{X}\) 0.5199 0.4801 0.4386 0.4395 0.4221 0.4228 0.4136 0.4161 0.4722 0.5103 0.4445 0.4426
s 0.0733 0.0723 0.0744 0.0743 0.0974 0.0943 0.0977 0.0949 0.0727 0.0718 0.0758 0.0751