α = 2

α = 3

PSNR

MSSIM

TIME

PSNR

MSSIM

TIME

HIO

22.0462

0.55415

10.1629

20.4197

0.54220

10.4223

prDeep

37.1750

0.96545

11.2548

34.2028

0.93328

11.5666

RED-FFDNet

30.9300

0.91942

29.8876

30.0733

0.90649

30.5879

RED-(DnCNN-BM3D)

37.1294

0.97202

105.0390

34.9621

0.95692

122.7438

RED-(DnCNN-FFDNet)

37.3965

0.96550

16.6837

34.5068

0.94374

18.1611