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Table 1 Quantitative measurement results of AMBE N , DE N , and CM N methods

From: A non-convex gradient fidelity-based variational model for image contrast enhancement

  AMBEN DEN CMN
  HE 2DHE AR MCE NGF HE 2DHE AR MCE NGF HE 2DHE AR MCE NGF
Plane 0.0260 0.3269 0.5087 0.4998 0.6340 0.4920 0.4990 0.5598 0.6399 0.7693 0.5540 0.5264 0.5010 0.5108 0.5334
Tank 0.4928 0.0360 0.5079 0.4998 0.6207 0.4880 0.4950 0.5972 0.6929 0.8120 0.5556 0.5351 0.5017 0.5232 0.5577
Cam 0.0944 0.0473 0.5074 0.4957 0.4995 0.4458 0.4812 0.4957 0.4953 0.5490 0.5128 0.5158 0.5015 0.5322 0.5173
Baboon 0.3618 0.1276 0.5079 0.4972 0.4989 0.4572 0.4802 0.4928 0.5058 0.7982 0.5422 0.5266 0.5027 0.5667 0.5362
Cessna 0.0197 0.5973 0.5072 0.5013 0.6877 0.4623 0.4815 0.4916 0.4968 0.4991 0.5220 0.5103 0.4776 0.5060 0.5006
Light 0.1141 0.0973 0.5052 0.5033 0.5043 0.4502 0.4866 0.4941 0.5554 0.5963 0.5348 0.5192 0.5014 0.5311 0.5365
Beach 0.0198 0.0245 0.5064 0.5011 0.4193 0.4528 0.4767 0.4937 0.5571 0.6130 0.5305 0.5164 0.5009 0.5135 0.5427
Island 0.2495 0.1873 0.5048 0.5016 0.5056 0.4532 0.4670 0.4897 0.6152 0.6748 0.5256 0.5234 0.5015 0.5257 0.5449
Average 0.1723 0.1805 0.5069 0.5000 0.5463 0.4627 0.4830 0.5143 0.5698 0.6640 0.5347 0.5217 0.4985 0.5262 0.5337
  1. The best among each results are in italics.