Table 5 Histogram and distribution analysis.
From: 2D-Cosine power sine coupled map with fractal-Fibonacci fusion for hyperchaotic image encryption
Image name | Histogram variance | Chi_square test | ||||
|---|---|---|---|---|---|---|
O | E | O | Result | E | Result | |
Chemical plant | 50326.45 | 251.55 | 50326.45 | Failed | 251.55 | Passed |
Brain tumour | 1513599.55 | 280.12 | 1513600 | Failed | 280.12 | Passed |
Berry | 36014.30 | 250.09 | 36014.3 | Failed | 250.09 | Passed |
Golden gate | 6025667.85 | 989.19 | 1506417 | Failed | 247.29 | Passed |
Couple | 1195460.98 | 1115.03 | 298865.2 | Failed | 278.75 | Passed |
Boat | 1535878.75 | 1189.60 | 383969.7 | Failed | 289.40 | Passed |
Baboon | 749426.29 | 897.21 | 187356.6 | Failed | 224.30 | Passed |
Chest CT scan | 14627115.66 | 941.83 | 3656779 | Failed | 235.45 | Passed |
Pentagon | 31893181.01 | 4608.02 | 1993324 | Failed | 288.00 | Passed |
Male | 11349450.88 | 3929.33 | 709340.7 | Failed | 245.58 | Passed |
