Algorithm

Information entropy/bit

Average gradient

Effective detail intensity

PSNR/dB

Original image

13.362

4.265

0.410

—

Dark channel prior

13.911

6.238

0.555

10.584

Color attenuation prior

13.583

3.334

0.573

10.903

Proposed algorithm

14.075

6.800

0.618

16.896

Improvements (Ours over DCP)

1.17↑

9.01%↑

11.31%↑

59.64%↑