Table 1: Correlation coefficients of image.

Image Original image Encrypted image
Horizontal Diagonal Vertical Horizontal Diagonal Vertical

Cameraman 0.9276 0.9120 0.9597 0.0119 −0.0021 −0.0025
Lena 0.9722 0.9527 0.9860 −0.0140 −0.0086 −0.0034
Peppers 0.9667 0.9382 0.9694 −0.0088 0.0080 −0.0054
Lake 0.9768 0.9544 0.9748 −0.0155 0.0101 −0.0088
Dollar 0.8035 0.6952 0.6938 0.0131 −0.0183 0.0263
Columbia 0.9727 0.9403 0.9705 0.0060 −0.0104 −0.0093
Lax 0.7889 0.7151 0.8483 −0.0107 0.0147 0.0107
Boat 0.9407 0.9158 0.9545 0.0169 −0.0074 −0.0077
Aerial 0.9135 0.7952 0.8677 0.0084 −0.0123 −0.0133