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

Table 5

The average of correlation values of the extracted watermarks under different attacks.

Attack	FPF-SVD-W			Proposed scheme
	WM1	WM2	WM3	WM1	WM2	WM3
NO	0.9959	0.9954	0.9837	0.9974	0.9967	0.9938
MF	0.8208	0.8169	0.7498	0.7448	0.7274	0.6637
AF	0.9196	0.9141	0.8662	0.8991	0.8841	0.8364
RO	0.0016	0.0042	0.0212	0.9974	0.9967	0.9938
FR	0.0277	0.0368	0.0009	0.9974	0.9967	0.9938
FC	0.0296	0.0232	0.0169	0.9974	0.9967	0.9938
PI	0.9523	0.9484	0.9185	0.9921	0.9909	0.9852
JPEG	0.9863	0.9848	0.9685	0.9857	0.9839	0.9760
MB	0.9590	0.9554	0.9235	0.9590	0.9528	0.9285
RS	0.9771	0.9752	0.9529	0.9732	0.9694	0.9559
GF	0.9861	0.9841	0.9665	0.9872	0.9849	0.9759
GN	0.7961	0.7737	0.6802	0.8158	0.7957	0.7160
SP	0.6613	0.6378	0.5371	0.7155	0.6995	0.6086
GC	0.4253	0.4368	0.2843	0.4545	0.4043	0.3468
SH	0.7897	0.7473	0.6788	0.9170	0.9283	0.8931
SN	0.7435	0.7218	0.6371	0.8043	0.7800	0.6994