Algorithm

Information entropy/bit

Average gradient

Effective detail intensity

PSNR/dB

Original image

13.126

2.886

0.328

—

Dark channel prior

15.252

6.127

0.625

8.117

Color attenuation prior

15.078

4.061

0.589

9.694

Proposed algorithm

15.001

7.268

0.623

10.748