Table 3 PSNR of reconstructed images (r=10)

DCT [12]

32.088

28.971

30.656

24.752

25.549

22.832

19.893

SDCT [2]

27.443

25.570

27.543

23.488

23.348

21.095

17.019

BAS-2008 [4]

29.509

27.150

28.994

24.285

24.444

22.279

18.849

BAS-2009 [6]

29.916

27.354

29.288

24.520

24.381

22.223

18.661

BAS-2010 [8]

31.143

28.292

30.072

24.666

25.063

22.581

19.376

BAS-2011 [9]

29.916

27.354

29.288

24.520

24.381

22.223

18.661

CB-2011 [13]

30.446

27.861

29.612

24.460

24.756

22.516

19.157

CB-2012 [3]

27.015

25.190

27.141

23.595

23.087

21.596

17.170

Transformation in [14]

2.159

1.856

2.877

2.936

2.582

1.992

1.981

Transformation in [15]

− 6 . 9 2 7

− 7 . 2 1 3

− 6 . 2 0 5

− 6 . 1 2 0

− 6 . 4 4 2

− 7 . 0 5 3

− 6 . 9 1 4

T [1]

2.163

1.867

2.880

2.951

2.596

2.001

1.981

T _SFG [1]

4.686

4.380

5.399

5.454

5.086

4.481

4.355