Security Measure for Image Steganography Based on High Dimensional KL Divergence

Table 2

Some experimental results of the HUGO algorithm.

	Measure Value of 4 dimensional probability statistics			Measure Value of proposed method			Difference of Chang Ratio
	HUGO; (0.2)	HUGO; (0.4)	Chang Ratio	HUGO; (0.2)	HUGO; (0.4)	Chang Ratio
1	1.30987	2.48358	89.60%	0.84043	1.69914	102.18%	12.57%
2	1.24200	2.14255	72.51%	0.70168	1.30778	86.38%	13.87%
3	1.44736	2.53561	75.19%	0.78758	1.44846	83.91%	8.72%
4	1.45431	2.87307	97.56%	0.74110	1.53700	107.39%	9.84%
5	1.27310	2.29136	79.98%	0.80768	1.48351	83.68%	3.69%
6	1.34469	2.57513	91.50%	1.04682	2.10384	100.97%	9.47%
7	1.39926	2.76546	97.64%	1.06538	2.21430	107.84%	10.20%
8	1.16290	1.91906	65.02%	0.51397	0.88650	72.48%	7.46%
9	0.93269	1.57508	68.87%	0.52490	0.91122	73.60%	4.72%
10	1.19879	1.62380	35.45%	0.39717	0.56526	42.32%	6.87%
11	0.48139	0.63090	31.06%	0.18233	0.25344	39.00%	7.94%
12	1.13675	1.95546	72.02%	0.88165	1.57983	79.19%	7.17%
13	1.33889	2.43350	81.75%	0.81350	1.54125	89.46%	7.70%
14	1.42714	2.85344	99.94%	0.81764	1.73621	112.34%	12.40%
15	1.24942	2.25357	80.37%	0.53311	0.97934	83.70%	3.33%
16	1.46831	2.80853	91.28%	0.67017	1.36130	103.13%	11.85%
17	1.36486	2.53497	85.73%	0.74542	1.42298	90.90%	5.17%
18	1.33739	2.69973	101.87%	1.11746	2.34387	109.75%	7.89%
19	1.42747	2.83689	98.74%	0.90182	1.87308	107.70%	8.96%
20	1.14644	2.06412	80.05%	0.79610	1.45723	83.05%	3.00%