Cameraman

Pepper

Monarch

Parrot

Lena

Barbara

HIO

8.0156

9.7258

11.1943

10.5683

10.7991

10.2880

prDeep

11.4701

9.7399

12.3588

10.9924

11.7673

10.7682

$\alpha =2$

RED-FFDNet

30.0683

30.3592

27.8742

31.4586

29.1933

29.1252

RED-(DnCNN-BM3D)

112.2271

101.4158

103.5018

103.4596

104.7078

91.4997

RED-(DnCNN-FFDNet)

17.1775

15.6832

16.3206

16.8662

16.4177

16.7262

HIO

7.7552

11.0985

11.3833

11.2330

10.5186

10.2153

prDeep

11.2175

10.9837

11.4953

11.3417

12.7648

11.3110

$\alpha =3$

RED-FFDNet

31.5895

30.8179

28.5880

31.9473

29.7577

29.0032

RED-(DnCNN-BM3D)

127.4946

122.2663

121.8104

119.6482

118.3332

111.6253

RED-(DnCNN-FFDNet)

22.9563

16.3123

15.6508

16.7565

16.4121

17.5576