From: Triple Threshold Statistical Detection filter for removing high density random-valued impulse noise in images
Multiplication factor K
PSNR
SSIM
0.1
31.32
0.291
0.2
31.95
0.420
0.3
32.55
0.516
0.4
33.08
0.611
0.5
33.71
0.784
0.6
33.19
0.658
0.7
32.09
0.534
0.8
31.21
0.383
0.9
30.27
0.188
1.0
29.30
0.104