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