Table 2 Results for the restorations of different stepsizes and algorithms

9 × 9 uniform

0.308

CQ with (1.5)

16.1802

52

3.3883

CQ with (1.6)

16.1722

48

3.1636

3.1

14.5266

19

1.3847

3.2

14.5265

19

1.3199

4.1 with (3.3)

14.2464

34

2.4280

\(h_{ij}=(1+i^{2}+j^{2})^{ - 1}\) for i,j = −4,…,4

2

CQ with (1.6)

22.6184

19

1.3007

CQ with (1.5)

22.4329

17

1.1718

3.1

19.8401

14

1.0746

3.2

19.8401

14

1.0266

4.1 with (3.3)

19.4912

33

2.3306

\(h_{ij}=(1+i^{2}+j^{2})^{ - 1}\) for i,j = −7,…,7

8

CQ with (1.6)

12.7305

39

2.6739

CQ with (1.5)

14.6363

42

2.8604

3.1

19.3561

18

1.3390

3.2

19.3560

18

1.3057

4.1 with (3.3)

18.6140

33

2.3628