Research Article
Visually Meaningful Image Encryption Scheme Based on DWT and Schur Decomposition
Table 6
Chi-squared test results.
| | Algorithm | Plain images | Sizes | Chi-square | Results |
| | Ours | Lena | 512×512 | 228.9180 | Pass | | Couple | 512×512 | 257.0996 | Pass | | Boat | 512×512 | 254.1309 | Pass | | Baboon | 512×512 | 250.3789 | Pass |
| | Reference [33] | Lena | 512×512 | 245.6426 | Pass | | Couple | 512×512 | 241.8262 | Pass | | Boat | 512×512 | 261.2148 | Pass | | Baboon | 512×512 | 272.1797 | Pass |
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