Research Article
[Retracted] Medical Image Encryption Based on 2D Zigzag Confusion and Dynamic Diffusion
Table 6
Comparison of information entropy results.
| Algorithms | Images | Global Shannon entropy | Local Shannon entropy () |
| Ours | CT | 7.9993 | 7.9024 | MRI | 7.9993 | 7.9030 | Ultrasound | 7.9993 | 7.9028 | X-ray | 7.9998 | 7.9030 | Ravichandran et al. [6] | MR_1 | 7.9992 | 7.9020 | CT_1 | 7.9993 | 7.9023 | Chai et al. [39] | Brone | 7.9994 | 7.9015 |
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