Table 8: PSNR result before and after pixel manipulation.

#123456789101112131415

JPEG
001Bef.40.7440.1243.0645.0147.6148.9950.6551.2051.8052.0552.1952.2552.2752.2852.30
Aft.40.9840.4043.1644.9847.3348.5349.8950.3350.7950.9751.0751.1151.1351.1351.15
003Bef.42.5041.9344.8646.7549.2750.6951.8452.6953.0052.9953.2453.2753.2753.2953.28
Aft.42.6742.1344.9146.6448.8750.0650.9551.5951.8151.8151.9852.0052.0052.0152.01
050Bef.42.2041.6144.5546.3748.9050.2651.6252.3552.7152.8852.9853.0153.0453.0653.06
Aft.42.4241.8744.6646.3848.6849.8650.9751.5551.8251.9552.0452.0652.0852.0952.09
601Bef.41.9741.2244.1546.1448.6849.9751.5252.1252.4852.7552.8952.9052.9352.9452.95
Aft.42.1941.4744.2546.0948.3949.4950.7551.2151.4851.6851.7851.7951.8151.8251.82

PNG
001Bef.38.7838.0542.9443.9448.1050.0453.8456.0559.6462.3566.3768.8072.3674.0180.24
Aft.76.3875.5776.5075.4478.3379.6779.6779.6779.6779.6779.6779.6779.6779.6779.67
003Bef.38.0237.3941.3043.2247.2049.3552.9555.2958.6961.1765.5268.3570.8173.7578.57
Aft.73.4376.7371.2271.6072.4272.4272.4272.4272.4270.9272.4272.4272.4272.4272.42
050Bef.37.3436.8141.3042.7446.4348.8952.3254.7758.1060.8664.0167.7770.2173.0079.44
Aft.73.3174.0777.1377.8078.5173.4776.9076.9076.9076.9076.9076.9076.9076.9076.90
601Bef.37.1536.5540.3142.6446.3048.5852.1254.4957.7060.6664.1167.7170.9674.7876.58
Aft.71.0070.8472.4472.4474.7474.6975.0275.0275.0275.0275.0275.0275.0275.0275.02