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

Table 4

Correlation values of the extracted watermarks by the proposed scheme corresponding to WM3.

Attack	City	Couple	Duck	Elaine	Flowers	House	Lena	Lighthouse	Parrots	Robots
NO	0.9612	0.9980	0.9966	0.9976	0.9981	0.9983	0.9977	0.9978	0.9973	0.9959
MF	0.4967	0.6655	0.8000	0.8169	0.5339	0.4213	0.7935	0.6075	0.8298	0.6716
AF	0.7613	0.8577	0.8790	0.8757	0.8077	0.7374	0.8664	0.8369	0.9148	0.8267
RO	0.9612	0.9980	0.9966	0.9976	0.9981	0.9983	0.9977	0.9978	0.9973	0.9959
FR	0.9612	0.9980	0.9966	0.9976	0.9981	0.9983	0.9977	0.9978	0.9973	0.9959
FC	0.9612	0.9980	0.9966	0.9976	0.9981	0.9983	0.9977	0.9978	0.9973	0.9959
PI	0.9541	0.9945	0.9947	0.9970	0.9900	0.9624	0.9955	0.9916	0.9931	0.9790
JPEG	0.9377	0.9814	0.9777	0.9830	0.9816	0.9802	0.9815	0.9802	0.9796	0.9769
MB	0.8560	0.9299	0.9403	0.9581	0.9175	0.9174	0.9460	0.9328	0.9569	0.9302
RS	0.8992	0.9681	0.9751	0.9775	0.9523	0.9177	0.9765	0.9573	0.9768	0.9589
GF	0.9337	0.9831	0.9834	0.9821	0.9758	0.9694	0.9825	0.9809	0.9907	0.9773
GN	0.7249	0.7224	0.6962	0.7167	0.7300	0.6892	0.7206	0.7178	0.7253	0.7171
SP	0.6076	0.6267	0.6152	0.6507	0.6232	0.5447	0.6137	0.6211	0.5905	0.5927
SN	0.6476	0.7232	0.7208	0.6909	0.6678	0.6191	0.7036	0.7355	0.7866	0.6992
GC	0.4082	0.3356	0.3049	0.3388	0.3662	0.3655	0.3439	0.3212	0.3211	0.3621
SH	0.8596	0.9095	0.9316	0.9368	0.8809	0.7940	0.9235	0.8979	0.9237	0.8731