Table 1: Average NC for S coefficients in the first and second level of SVD for 33 images 512512.

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

0.98770.99830.98810.99590.988010.98820.98800.9861
0.97750.98990.97570.99290.97850.99920.97900.97710.9857