Table 4 Discrete entropy calculated for the test images of four groups
Techniques | G1 | G2 | G3 | G4 | Average |
|---|---|---|---|---|---|
Original | 4.82 | 4.80 | 6.98 | 7.02 | 5.91 |
AGC | 4.78 | 4.76 | 6.90 | 6.87 | 5.83 |
HE | 4.69 | 4.72 | 6.74 | 6.79 | 5.74 |
AGCWD | 4.52 | 4.62 | 6.55 | 6.72 | 5.60 |
LDR | 4.74 | 4.73 | 6.88 | 6.94 | 5.82 |
RSWHE | 4.51 | 4.23 | 5.90 | 4.45 | 4.77 |
WAHE | 4.73 | 4.77 | 6.89 | 6.86 | 5.81 |
CVC | 4.75 | 4.76 | 6.87 | 6.85 | 5.80 |