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Table 1 CC index of the extracted information image

From: Blind data hiding technique using the Fresnelet transform

Information embedded images (512 × 512) USAF (256 × 256)
Scaling factor (α)
DDNT (256 × 256)
Scaling factor (α)
0.03 0.04 0.05 0.06 0.07 0.03 0.04 0.05 0.06 0.07
Camerman 0.9873 0.9920 0.9943 0.9956 0.9965 0.9886 0.9935 0.9957 0.9970 0.9977
Pepper 0.9877 0.9924 0.9946 0.9960 0.9968 0.9889 0.9938 0.9959 0.9971 0.9978
Elaine 0.9875 0.9922 0.9946 0.9960 0.9969 0.9888 0.9936 0.9960 0.9972 0.9979
Lena 0.9877 0.9923 0.9947 0.9969 0.9960 0.9888 0.9937 0.9960 0.9972 0.9980