A game-theoretic architecture for visible watermarking system of ACOCOA (adaptive content and contrast aware) technique

EURASIP Journal on Advances in Signal Processing

Table 8 Performance summaries of watermarked color images before and after 7 × 7 median filtering

Method	MSSIM			VIF			PSNR-HVS-M (dB)			WSNR (dB)
	A(1)	A(2)	A(3)	B(1)	B(2)	B(3)	C(1)	C(2)	C(3)	D(1)	D(2)	D(3)
Lena
Before	0.933	0.943	0.973	0.693	0.599	0.718	22.685	27.462	30.056	21.598	28.129	29.592
After	0.888	0.913	0.923	0.255	0.256	0.272	16.772	18.914	18.497	15.857	18.329	17.766
After (wm)	0.946	0.940	0.942	0.535	0.512	0.501	20.260	20.231	20.186	20.718	20.463	20.586
Tiffany
Before	0.910	0.931	0.975	0.664	0.572	0.733	24.008	27.869	32.861	27.167	32.968	36.949
After	0.867	0.929	0.904	0.203	0.209	0.215	19.184	19.405	18.704	23.219	23.484	22.518
After (wm)	0.940	0.904	0.929	0.548	0.510	0.492	19.565	19.681	19.715	23.798	23.935	24.101

Note: A, B, C, and D are image quality metric of MSSIM, VIF, PSNR-HVS-M, and WSNR, respectively.
(1) is Huang and Tang's method [18].
(2) is Tsai's method [12].
(3) is the proposed ACOCOA approach.