Visible Watermarking Technique Based on Human Visual System for Single Sensor Digital Cameras

Table 3

Comparison of MOS among two previously proposed algorithms [13, 14] and proposed algorithm.

	Artificial images; (Figures 5(a) and 5(b))		Natural images; (Figures 5(c) and 5(d))
	Visibility	Unobtrusiveness	Visibility	Unobtrusiveness
Lukac’s method [13]	3.18	4.01	2.22	3.84
Yu’s method [14]	3.19	3.89	3.02	3.83
Proposed method	4.59	4.39	4.13	4.10