Table 3: Average of NC for “S” coefficients in first and second level of SVD for 18 images 256256.

Attacks Gaussian 0.01Gamma correction 0.1AVG filter 33Crop 1/4S&P  
0.01
Scaling 1/2Speckle 0.01Median 33Rot 50

0.99680.99800.98660.99760.986810.98670.98650.9871
0.96460.98780.95690.99520.96680.99940.96440.95800.9804