Security Measure for Image Steganography Based on High Dimensional KL Divergence

Table 1

Some experimental results of the HILL algorithm.

	Measure Value of 4 dimensional probability statistics			Measure Value of proposed method			Difference of Chang Ratio
	HILL; (0.2)	HILL; (0.4)	Change Ratio	HILL; (0.2)	HILL; (0.4)	Change Ratio
1	1.02092	2.08164	103.90%	0.73296	1.53317	109.18%	5.28%
2	0.89417	1.71277	91.55%	0.63163	1.23047	94.81%	3.26%
3	1.34281	2.32159	72.89%	0.76800	1.37687	79.28%	6.39%
4	1.43922	2.66047	84.86%	0.78199	1.48413	89.79%	4.93%
5	0.90536	1.52810	68.78%	0.61658	1.05371	70.90%	2.11%
6	1.10897	2.12113	91.27%	0.95001	1.86434	96.24%	4.97%
7	1.25125	2.44827	95.67%	1.04682	2.10483	101.07%	5.40%
8	0.98012	1.66209	69.58%	0.45888	0.79972	74.28%	4.70%
9	0.44683	0.88066	97.09%	0.27333	0.54846	100.66%	3.57%
10	0.70805	1.02537	44.82%	0.24943	0.38313	53.60%	8.79%
11	0.31410	0.47564	51.43%	0.12727	0.20011	57.23%	5.80%
12	0.91659	1.63704	78.60%	0.75807	1.40109	84.82%	6.22%
13	1.16346	2.17729	87.14%	0.75297	1.45461	93.18%	6.04%
14	1.32227	2.57819	94.98%	0.84763	1.70640	101.31%	6.33%
15	0.62734	1.14779	82.96%	0.28477	0.53467	87.75%	4.79%
16	1.29864	2.53750	95.40%	0.65260	1.30918	100.61%	5.21%
17	1.22362	2.06343	68.63%	0.70746	1.20782	70.73%	2.09%
18	1.17480	2.40565	104.77%	1.05996	2.19878	107.44%	2.67%
19	1.33475	2.55500	91.42%	0.90483	1.76291	94.83%	3.41%
20	0.84656	1.50879	78.23%	0.61633	1.11217	80.45%	2.22%