Steganography Algorithm Based on the Nonlocal Maximum Likelihood Noise Estimation for Mobile Applications

Table 3

Correlation between the recovered image and the image to be hidden.

Test	Round	Red color channel	Green color channel	Blue color channel	General
1	1	1	1	1	1
	2	1	1	1	1
	3	1	1	1	1
	4	1	1	1	1
2	1	1	1	1	1
	2	1	1	1	1
	3	0.968956	0.934658	0.978830	0.960815
	4	0.968956	0.934573	0.978830	0.960786
3	1	1	1	0.974247	0.991415
	2	1	1	0.974247	0.991415
	3	1	1	1	1
	4	1	1	1	1
4	1	1	1	1	1
	2	1	1	1	1
	3	1	1	1	1
	4	1	1	1	1
5	1	1	1	1	1
	2	1	1	1	1
	3	1	1	1	1
	4	1	1	1	1
6	1	0.903405	0.941577	0.969175	0.938052
	2	0.902387	0.940640	0.966733	0.936587
	3	0.937927	0.775679	0.703393	0.805666
	4	0.937927	0.775711	0.704134	0.805924
7	1	1	1	1	1
	2	1	1	1	1
	3	1	1	1	1
	4	1	1	1	1
8	1	1	1	1	1
	2	1	1	1	1
	3	1	1	1	1
	4	1	1	1	1
Average		0.98811119	0.97821369	0.97654966	0.98095813