Research Article
Security Measure for Image Steganography Based on High Dimensional KL Divergence
Table 1
Some experimental results of the HILL algorithm.
| ā | Measure Value of 4 dimensional probability statistics | Measure Value of proposed method | Difference of Chang Ratio | ā | 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% |
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