Table 2: Evaluation of the algorithm against filters attacks.

Filter's window sizeMedian filterLow pass filterWiener filter
PSNR (dB)WPSNR (dB)NCPSNR (dB)WPSNR (dB)NCPSNR (dB)WPSNR (dB)NC

3 × 3 45.912157.16491.000035.5290 46.4338 1.000035.1327 49.0685 1.0000
5 × 5 41.5136 50.0277 1.000032.5677 40.7808 1.000031.5552 41.9205 1.0000
7 × 7 38.3304 45.4194 1.000030.6348 37.6424 1.000029.4059 37.8203 1.0000
9 × 9 36.109442.50761.000029.236835.66571.000027.870735.27721.0000