Table 2.
Variance of the histogram of cipher image (R channel).
| Image | Lena | Baboon | Flower | Fruits | Yacht | Girl | Flowers |
|---|---|---|---|---|---|---|---|
| Variance | 898.25 | 1017.29 | 1095.71 | 899.87 | 917.07 | 1413.86 | 783.00 |
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