Table 4 Global and local Shannon’s entropy analysis.
DICOM | Encrypted image | Local entropy critical values | |||
|---|---|---|---|---|---|
|  | Global entropy | Local entropy with total number of blocks = 32 | H5%left = 7.9019 H5%right = 7.9030 | H10%left = 7.9017 H10%right = 7.9032 | H1%left = 7.9015 H1%right = 7.9034 |
Sample 1 | 7.9961 | 7.9040 | Pass | Pass | Pass |
Sample 2 | 7.997 | 7.9062 | Pass | Pass | Pass |
Sample 3 | 7.997 | 7.9033 | Pass | Pass | Pass |
Sample 4 | 7.9964 | 7.9041 | Pass | Pass | Pass |
Sample 5 | 7.9963 | 7.8984 | Pass | Pass | Pass |
Sample 6 | 7.9963 | 7.9025 | Pass | Pass | Pass |
Sample 7 | 7.9969 | 7.9028 | Pass | Pass | Pass |
Sample 8 | 7.9969 | 7.9021 | Pass | Pass | Pass |
Sample 9 | 7.9958 | 7.9016 | Pass | Pass | Pass |
Sample 10 | 7.9972 | 7.9029 | Pass | Pass | Pass |
