Table 5.
Adjacent pixels correlation comparison.
| Original image | Encryption image | |
|---|---|---|
| Horizontal direction | 0.9700 | −0.0207 |
| Vertical direction | 0.9384 | −0.0176 |
| Diagonal direction | 0.9176 | 0.0168 |
Adjacent pixels correlation comparison.
| Original image | Encryption image | |
|---|---|---|
| Horizontal direction | 0.9700 | −0.0207 |
| Vertical direction | 0.9384 | −0.0176 |
| Diagonal direction | 0.9176 | 0.0168 |