Table 6 Comparison of NPCR and UACI.

From: A blockchain-integrated chaotic fractal encryption scheme for secure medical imaging in industrial IoT settings

Encryption scheme

NPCR

UACI

29

99.603

33.45

30

99.6098

33.4384

Proposed algorithm

99.92

33.31

Encryption scheme

PSNR

MSE

31

8.440

7764

32

8.4045

8333.3851

Proposed algorithm

29.74

72,721.95

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