(34) H ( X ) = − ∑ i = 1 n p ( x i ) log 2 p ( x i ) As shown in Table 3 , comparison of information entropy before and after encryption reveals a clear trend: encrypted images exhibit significantly higher entropy than original images.
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Chaotic Characteristics Analysis of a Strongly Dissipative Nonlinearly Coupled Chaotic System and Its Application in DNA-Encoded RGB Image Encryption.
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