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. 2023 Jul 31;25(8):1147. doi: 10.3390/e25081147

Table 6.

Entropy values of different Lena ciphertext images.

Scheme Inf. Entropy
CIES-DVEM 7.9994
[17] 7.9993
[18] 7.9976
[20] 7.9993
[16] 7.9992
[19] 7.9992