Research Article
Visually Meaningful Image Encryption Scheme Based on DWT and Schur Decomposition
Table 7
Grayscale images: the similarity test between different visual images and corresponding cover images.
| | Plain image | Host image | NC | H | | Host image | Visual image |
| | Cameraman () | Lena | 0.9997 | 7.4456 | 7.4512 | | Baboon | 0.9997 | 7.3579 | 7.3604 | | Peppers | 0.9997 | 7.5937 | 7.5993 |
| | Boat () | Baboon | 0.9997 | 7.3579 | 7.3603 | | Bridge | 0.9997 | 5.7056 | 7.2360 | | Peppers | 0.9997 | 7.5937 | 7.5997 |
| | Lena () | Pentagon | 0.9998 | 6.7327 | 6.7489 | | Landscape | 0.9999 | 7.4402 | 7.4476 | | Male | 0.9996 | 7.5237 | 7.5344 |
| | Bridge () | Pentagon | 0.9998 | 6.7327 | 6.7489 | | Landscape | 0.9999 | 7.4402 | 7.4474 | | Male | 0.9996 | 7.5237 | 7.5347 |
|
|
