Research Article
Security Measure for Image Steganography Based on High Dimensional KL Divergence
Table 5
Some experimental results of the J-UNIWARD algorithm.
| ā | Measure Value of 4-dimensional probability statistics | Measure Value of proposed method | Difference of Chang Ratio | LSBM (0.2) | LSBM (0.4) | Chang Ratio | LSBM (0.2) | LSBM (0.4) | Chang Ratio |
| 1 | 2.3980 | 3.8116 | 58.95% | 1.7478 | 2.8700 | 64.20% | 5.25% |
| 2 | 1.5503 | 2.5022 | 61.40% | 1.0278 | 1.7299 | 68.31% | 6.91% |
| 3 | 1.8447 | 2.6529 | 43.81% | 1.0771 | 1.5964 | 48.21% | 4.40% |
| 4 | 2.1020 | 3.0682 | 45.97% | 1.1829 | 1.7872 | 51.08% | 5.12% |
| 5 | 1.3284 | 2.2791 | 71.56% | 0.9469 | 1.6698 | 76.34% | 4.78% |
| 6 | 2.6214 | 4.2552 | 62.33% | 2.2499 | 3.7877 | 68.35% | 6.02% |
| 7 | 2.9595 | 4.7336 | 59.95% | 2.5685 | 4.2482 | 65.40% | 5.45% |
| 8 | 1.3384 | 1.9594 | 46.40% | 0.6621 | 1.0006 | 51.13% | 4.73% |
| 9 | 0.9555 | 1.5528 | 62.52% | 0.6048 | 1.0036 | 65.93% | 3.41% |
| 10 | 0.7076 | 1.1481 | 62.24% | 0.2512 | 0.4259 | 69.56% | 7.32% |
| 11 | 0.3445 | 0.5069 | 47.12% | 0.1264 | 0.1964 | 55.35% | 8.24% |
| 12 | 1.6758 | 2.5975 | 55.00% | 1.3909 | 2.2457 | 61.46% | 6.46% |
| 13 | 1.9713 | 3.0271 | 53.56% | 1.2981 | 2.0635 | 58.96% | 5.41% |
| 14 | 2.9178 | 4.5013 | 54.27% | 1.8871 | 3.0126 | 59.64% | 5.36% |
| 15 | 0.8939 | 1.7379 | 94.41% | 0.4174 | 0.8262 | 97.96% | 3.55% |
| 16 | 2.3003 | 3.4792 | 51.25% | 1.2138 | 1.8955 | 56.16% | 4.91% |
| 17 | 1.3965 | 2.3239 | 66.41% | 0.8405 | 1.4308 | 70.23% | 3.82% |
| 18 | 3.3994 | 5.4091 | 59.12% | 3.0998 | 5.0776 | 63.81% | 4.68% |
| 19 | 2.3899 | 3.9014 | 63.25% | 1.6657 | 2.7949 | 67.80% | 4.55% |
| 20 | 1.6447 | 2.6120 | 58.81% | 1.2476 | 2.0352 | 63.13% | 4.32% |
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