Table 4 Discrete entropy (DE) and average of DEs (ADE)
From: Using weighted dynamic range for histogram equalization to improve the image contrast
| Â | DE | ADE | ||||
|---|---|---|---|---|---|---|
Method | Toy | Aircraft | Pentagon | Hats | Wall | (50 images) |
Original | 4.19 | 2.78 | 4.66 | 4.79 | 4.83 | 4.52 |
Global HE [1] | 3.48 | 2.60 | 4.01 | 4.66 | 4.75 | 3.84 |
BBHE [2] | 4.09 | 2.72 | 4.61 | 4.1 | 4.11 | 4.42 |
DSIHE [3] | 4.03 | 2.74 | 4.57 | 4.67 | 4.75 | 4.40 |
MMBEBHE [4] | 4.07 | 2.71 | 4.59 | 4.65 | 4.74 | 4.41 |
WTHE [9] | 3.35 | 2.74 | 4.64 | 4.68 | 4.70 | 4.27 |
BPDHE [7] | 4.07 | 2.75 | 4.47 | 4.60 | 4.58 | 4.32 |
RSWHE [10] | 4.19 | 2.78 | 4.66 | 4.79 | 4.83 | 4.51 |
AGCWD [13] | 3.61 | 2.78 | 4.62 | 4.74 | 4.79 | 4.30 |
BPWDRHE | 4.15 | 2.77 | 4.64 | 4.77 | 4.81 | 4.48 |