Table 3 Evaluation of the computational complexity. Mean CPU time in seconds of each reconstruction method on the different datasources in a 2 x Intel Xeon E5 2670 8C (2.6 GHz)

R1

2.483

2.367

0.409

9.377

1310.486

7.200

0.638

11.195

11.352

0.086

S1

0.106

0.215

0.059

0.917

183.266

0.120

0.056

0.406

0.333

0.010

S2

1.775

1.904

0.349

9.504

950.648

7.101

0.585

10.907

10.898

0.091

G1

10.442

6.795

1.079

29.612

2839.319

31.385

1.865

46.255

47.106

0.260

G2

25.551

12.189

1.750

53.792

4115.408

60.143

3.431

100.375

103.085

0.418