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(a) Image: Lena
173931.fig.005b
(b) Encrypted image: Lena
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(c) Image: Black
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(d) Encrypted image: Black
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(e) Image: Baboon
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(f) Encrypted image: Baboon
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(g) Image: Checkerboard
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(h) Encrypted image: Checkerboard
Figure 5: Correlation distribution of the pairs horizontal to adjacent pixels.