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

Table 6

PSNR between the cover image and the stego-image.

Test	Round	Red color channel (dB)	Green color channel (dB)	Blue color channel (dB)	General
1	1	52.497699	53.002946	52.326885	52.609177
	2	49.332439	49.469855	49.497932	49.433408
	3	52.498107	53.002844	52.326827	52.609259
	4	49.332481	49.469888	49.497680	49.433350
2	1	51.866130	51.580375	51.599800	51.682102
	2	53.954805	54.024465	53.943410	53.974227
	3	51.866143	51.580509	51.600254	51.682302
	4	53.954960	54.024444	53.943688	53.974364
3	1	38.929629	38.924941	39.002274	38.952281
	2	43.093559	43.167957	43.183125	43.148214
	3	38.929747	38.924812	39.002413	38.952324
	4	43.093524	43.167910	43.183083	43.148173
4	1	39.819854	39.754544	39.748248	39.774215
	2	43.580898	43.760993	43.433572	43.591821
	3	39.819814	39.754550	39.748312	39.774225
	4	43.580834	43.760982	43.433590	43.591802
5	1	40.625469	40.672561	40.663386	40.653805
	2	43.357827	43.346994	43.304021	43.336280
	3	40.625516	40.672646	40.663458	40.653874
	4	43.357893	43.347133	43.304007	43.336344
6	1	46.788600	46.950096	47.255944	46.998213
	2	49.881468	50.155912	50.406454	50.147945
	3	46.788802	46.949528	47.255466	46.997932
	4	46.788802	46.949528	47.255466	46.997932
7	1	51.069443	51.423405	51.485705	51.326185
	2	52.916019	53.134731	53.201847	53.084199
	3	51.069215	51.423735	51.485490	51.326147
	4	52.916605	53.134927	53.201621	53.084384
8	1	41.445945	41.033076	41.661511	41.380177
	2	44.025312	43.347796	43.920712	43.764607
	3	41.445419	41.033140	41.661854	41.380138
	4	44.025312	43.347796	43.920712	43.764607
Average(dB)		46.3524459	46.3842193	46.4412108	46.3926254