A Secure Steganographic Algorithm Based on Frequency Domain for the Transmission of Hidden Information

Table 3

Values of relative entropy pairs.

Keys	Proposed method	Soria method	Velasco method
Airplane
1	0.002525	0.002487	0.002025
2	0.002370	0.002849	0.002025
3	0.002249	0.002468	0.002025
4	0.002449	0.002550	0.002025
5	0.002436	0.002564	0.002025
6	0.002263	0.002398	0.002025
7	0.002378	0.002434	0.002025
Leaves
1	0.001501	0.001622	0.001225
2	0.001755	0.001650	0.001225
3	0.001635	0.001569	0.001225
4	0.001648	0.001475	0.001225
5	0.001680	0.001652	0.001225
6	0.001789	0.001631	0.001225
7	0.001644	0.001469	0.001225
Lenna
1	0.002055	0.002051	0.001409
2	0.002204	0.002098	0.001409
3	0.002076	0.001983	0.001409
4	0.002004	0.002028	0.001409
5	0.001925	0.001944	0.001409
6	0.002152	0.001949	0.001409
7	0.002068	0.001856	0.001409
Peppers
1	0.004259	0.004068	0.002649
2	0.004155	0.004607	0.002649
3	0.004113	0.003909	0.002649
4	0.004323	0.004485	0.002649
5	0.004253	0.004045	0.002649
6	0.004230	0.003969	0.002649
7	0.004308	0.003974	0.002649