A Perceptive Approach to Digital Image Watermarking Using a Brightness Model and the Hermite Transform

Table 5

MOS averaged over all tested images obtained in experiment 3.

Observer	Group
	1		2		3		4
	O	W	O	O	W	W	W	O
1	0.5714		0.2619		0.0714		1.1428
2	0.6190		1.0000		0.6904		1.2857
3	0.1190		0.0238		0.1428		0.0238
4	0.3571		0.0238		0.0000		0.2619