A Reliable Image Watermarking Scheme Based on Redistributed Image Normalization and SVD

Table 2

Correlation values of the extracted watermarks by the proposed scheme corresponding to WM1.

Attack	City	Couple	Duck	Elaine	Flowers	House	Lena	Lighthouse	Parrots	Robots
NO	0.9868	0.9989	0.9978	0.9987	0.9989	0.9991	0.9988	0.9989	0.9985	0.9981
MF	0.6236	0.7570	0.8552	0.8616	0.6288	0.5104	0.8501	0.7267	0.8715	0.7628
AF	0.8529	0.9161	0.9288	0.9260	0.8766	0.8296	0.9195	0.9043	0.9445	0.8926
RO	0.9868	0.9989	0.9978	0.9987	0.9989	0.9991	0.9988	0.9989	0.9985	0.9981
FR	0.9868	0.9989	0.9978	0.9987	0.9989	0.9991	0.9988	0.9989	0.9985	0.9981
FC	0.9868	0.9989	0.9978	0.9987	0.9989	0.9991	0.9988	0.9989	0.9985	0.9981
PI	0.9825	0.9969	0.9967	0.9983	0.9940	0.9769	0.9975	0.9951	0.9962	0.9873
JPEG	0.9731	0.9889	0.9851	0.9886	0.9872	0.9873	0.9880	0.9877	0.9869	0.9845
MB	0.9250	0.9640	0.9686	0.9723	0.9469	0.9542	0.9664	0.9629	0.9728	0.9564
RS	0.9488	0.9791	0.9835	0.9852	0.9697	0.9479	0.9851	0.9737	0.9843	0.9745
GF	0.9710	0.9903	0.9902	0.9903	0.9863	0.9824	0.9903	0.9893	0.9940	0.9876
GN	0.8170	0.8165	0.7984	0.8269	0.8208	0.8064	0.8272	0.8234	0.8225	0.7993
SP	0.7340	0.7559	0.7283	0.7382	0.7189	0.6505	0.7235	0.7265	0.6772	0.7024
SN	0.7600	0.8156	0.8130	0.7976	0.7741	0.7530	0.8121	0.8463	0.8706	0.8004
GC	0.5206	0.4462	0.4118	0.4458	0.4650	0.4739	0.4503	0.4308	0.4302	0.4708
SH	0.8944	0.9140	0.9164	0.9307	0.9016	0.8770	0.9414	0.9263	0.9555	0.9124