Research Article
Secure Smart Healthcare Monitoring in Industrial Internet of Things (IIoT) Ecosystem with Cosine Function Hybrid Chaotic Map Encryption
Table 11
CCs of two bordering pixels, plain and ciphered images (including test images).
| Methods | Images | Plain images | Encrypted images | H | V | D | H | V | D |
| Proposed | Pepper | R | 0.9786 | 0.9820 | 0.9694 | 5.1e-04 | 1.2e-04 | 0.0017 | G | 0.9775 | 0.9990 | 0.9650 | 0.0017 | -6.7e0-4 | -4.2e-04 | B | 0.9760 | 0.980 | 0.9640 | 0.0031 | 1.6e-04 | -3.5e-05 | Lake | R | 0.9677 | 0.9663 | 0.9502 | 7.6e-04 | -0.0016 | 0.0014 | G | 0.9620 | 0.9640 | 0.9540 | 9.4e-04 | -0.0011 | -2.4e-04 | B | 0.9670 | 0.9650 | 0.9520 | 0.0022 | 4.5e-04 | 0.0031 | P001 (keyframe 1) | R | 0.9630 | 0.9760 | 0.9427 | -0.0023 | 0.0017 | 5.5e-04 | G | 0.9620 | 0.9740 | 0.9410 | 9.6e-04 | 0.0023 | 5.3e-04 | B | 0.9605 | 0.9750 | 0.9430 | 2.2e-06 | 0.0022 | -6.2e-04 | P002 (keyframe 2) | R | 0.9578 | 0.9905 | 0.9511 | 2.3e-05 | -4.3e-04 | 0.0032 | G | 0.9560 | 0.9900 | 0.9505 | 0.0028 | -9.1e-04 | 0.0033 | B | 0.9570 | 0.9901 | 0.9500 | 5.2e-07 | -3.3e-04 | 0.0011 | P003 (keyframe 3) | R | 0.9554 | 0.9926 | 0.9498 | 6.16e-04 | -0.0022 | -3.1e-04 | G | 0.9540 | 0.9910 | 0.9480 | -5.3e-04 | -0.0011 | 0.0012 | B | 0.9545 | 0.9918 | 0.9490 | 0.0015 | -0.0038 | 5.01e-04 | P004 (keyframe 4) | R | 0.9578 | 0.9939 | 0.9525 | 3.12e-04 | -0.0016 | 0.0011 | G | 0.9500 | 0.9906 | 0.9510 | 0.0015 | 0.0024 | -0.0022 | B | 0.9565 | 0.9925 | 0.9520 | -0.0013 | 0.0011 | 0.0023 | P005 (keyframe 5) | R | 0.9494 | 0.9889 | 0.9386 | 3.23e-04 | 8.45e-05 | 0.0012 | G | 0.9480 | 0.9875 | 0.9360 | 0.0016 | 0.0013 | -0.0014 | B | 0.9485 | 0.9870 | 0.9375 | 4.50e-05 | 0.0017 | -0.0014 |
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