Image Watermarking Algorithm Based on Multiobjective Ant Colony Optimization and Singular Value Decomposition in Wavelet Domain

Table 3

Correlation coefficient comparison results between the MSF-MOACO algorithms and other algorithms.

Image	Algorithm	GC	DI	RT	MB	TR
	MSF-MOACO	0.970	0.994	0.927	0.989	0.755
	Xianghong et al. [1]	0.847	0.001	0.368	0.428	0.411
Cameraman	Liu and Li [3]	0.988	0.688	0.665	0.652	0.659
	Pai and Ruan [25]	0.616	0.532	0.421	0.546	0.462
	Ouhsain and Hamza [12]	0.940	0.463	0.201	0.980	0.524
	MSF-MOACO	0.979	0.979	0.904	0.974	0.951
	Xianghong et al. [1]	0.915	0.001	0.493	0.516	0.444
Goldhill	Liu and Li [3]	0.997	0.676	0.702	0.643	0.752
	Pai and Ruan [25]	0.313	0.267	0.271	0.304	0.278
	Ouhsain and Hamza [12]	0.955	0.423	0.322	0.975	0.563
	MSF-MOACO	0.970	0.970	0.916	0.966	0.877
	Xianghong et al. [1]	0.875	0.001	0.446	0.584	0.419
Lena	Liu and Li [3]	0.986	0.686	0.641	0.666	0.683
	Pai and Ruan [25]	0.535	0.435	0.332	0.527	0.374
	Ouhsain and Hamza [12]	0.953	0.452	0.356	0.970	0.550
	MSF-MOACO	0.924	0.968	0.847	0.962	0.875
	Xianghong et al. [1]	0.912	0.001	0.518	0.518	0.492
Man	Liu and Li [3]	0.990	0.683	0.689	0.636	0.766
	Pai and Ruan [25]	0.374	0.316	0.287	0.334	0.292
	Ouhsain and Hamza [12]	0.902	0.432	0.324	0.965	0.543