Table 2 ERGAS values of state-of-the-art SR methods. The bold number indicates the best performance

Airplane

×2

3.1462

2.6994

2.4515

2.3379

2.2613

2.2075

2.1987

×3

2.9942

2.6364

2.3988

2.4103

2.3015

2.2889

2.2044

×4

2.6828

2.4634

2.4077

2.3345

2.1613

2.0481

1.9985

Bridge

×2

6.5783

6.0234

5.9902

5.6359

5.2230

5.5834

5.1681

×3

5.7809

5.5293

5.4437

5.2569

5.1571

4.9849

4.9901

×4

4.8862

4.6293

4.6128

4.5153

4.3820

4.4121

4.3815

Harbor

×2

9.4446

8.1335

8.3982

9.0341

7.0818

7.9539

6.3731

×3

11.2215

10.0231

9.9025

8.9336

8.0004

8.0349

8.1795

×4

12.9885

11.3769

10.5539

10.2495

10.5594

10.5104

9.5517

Inter-section

×2

14.2147

11.2275

11.0060

12.4054

11.1685

11.7313

10.8496

×3

13.4601

12.7299

12.0232

11.9441

11.5986

12.7035

11.0287

×4

15.1112

13.0236

12.7750

13.6313

11.0426

11.0405

11.4467

Parking_lot

×2

7.7762

7.4731

7.5994

6.9825

6.9904

7.5398

6.8247

×3

6.3143

6.1019

5.7282

5.5627

5.1651

5.0154

5.3081

×4

5.8401

4.6099

4.5310

6.7772

5.5812

4.8773

4.5238