Research Article
Adaptive Image Enhancement Using Entropy-Based Subhistogram Equalization
Table 1
DE calculated for the test images.
| | Image | BBHE | DSIHE | RMSHE | MMBEBHE | RSIHE | DHE | BHEPL | ESIHE | MMSICHE | BHEMHB | Proposed |
| | F16 | 6.3327 | 6.3590 | 6.0909 | 6.5023 | 6.4910 | 6.5124 | 6.5438 | 6.6120 | 6.6026 | 6.6660 | 7.4261 | | Aerial | 7.0015 | 6.9640 | 7.9891 | 6.9567 | 7.0971 | 7.1369 | 6.9752 | 7.5100 | 7.6289 | 7.7350 | 7.6931 | | Butterfly | 7.1428 | 7.2368 | 7.1569 | 7.0623 | 6.9257 | 7.2463 | 6.9674 | 7.0680 | 7.0816 | 6.8156 | 7.1520 | | Fish | 6.0326 | 6.1604 | 6.1689 | 6.2672 | 5.9100 | 6.2672 | 6.1324 | 5.9850 | 6.1247 | 6.0170 | 7.1325 | | Lena | 7.2324 | 7.1996 | 7.0085 | 7.2195 | 7.4610 | 7.5984 | 7.5124 | 7.4970 | 7.5128 | 7.5620 | 7.8361 | | Portofino | 6.5736 | 6.4447 | 6.2251 | 6.3516 | 6.5054 | 6.4368 | 6.3018 | 6.4836 | 6.3927 | 6.6470 | 6.7100 |
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