Table 7 Statistical measures of original images.
From: Novel structures of chaos-based parallel multiple image encryption and FPGA implementation
| Â | Entropy | Chi-square test (\(\chi ^2\)) | Correlation coefficients in | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Â | Â | Â | Horizontal | Vertical | Diagonal | ||||||||||
Channel | R | G | B | R | G | B | R | G | B | R | G | B | R | G | B |
Baboon | 6.501 | 6.446 | 6.273 | 579,798.39 | 595,896.90 | 742,573.87 | 0.924 | 0.869 | 0.907 | 0.874 | 0.776 | 0.884 | 0.867 | 0.750 | 0.854 |
Flowers | 7.383 | 7.235 | 7.364 | 206,427.64 | 272706.08 | 192,953.29 | 0.972 | 0.951 | 0.953 | 0.972 | 0.950 | 0.953 | 0.955 | 0.922 | 0.926 |
Peppers | 7.339 | 7.496 | 7.059 | 213,187.22 | 318,382.93 | 491,428.18 | 0.964 | 0.981 | 0.967 | 0.966 | 0.982 | 0.966 | 0.956 | 0.969 | 0.948 |
Goldhill | 7.471 | 7.429 | 7.476 | 231332.11 | 268762.60 | 278677.24 | 0.968 | 0.973 | 0.977 | 0.961 | 0.977 | 0.979 | 0.940 | 0.958 | 0.962 |
Black | 0.000 | 124,093,200.00 | NaN | NaN | NaN | ||||||||||
Boats | 7.088 | 586,046.22 | 0.969 | 0.978 | 0.950 | ||||||||||
Clock | 6.706 | 282061.56 | 0.956 | 0.974 | 0.939 | ||||||||||
White | 0.000 | 109,630,537.22 | NaN | NaN | NaN | ||||||||||
