Research Article
Chaotic Image Encryption Algorithm Based on Circulant Operation
Table 2
NPCR and UACI of two encrypted images with one-bit difference.
| Image | Size | UACI | NPCR |
| Cameraman | | 0.33589 | 0.99579 | Lena | | 0.33562 | 0.99578 | Straw | | 0.33446 | 0.99594 | Gravel | | 0.33457 | 0.99594 |
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