Research Article

SART-Type Image Reconstruction from a Limited Number of Projections with the Sparsity Constraint

Table 1

Maximum iteration numbers and relative errors associated with each of three representative reconstruction schemes for different numbers of noise-free projections.

View numberScheme-AScheme-BScheme-C

5519040 (0.1000)20000 (9.2080)20000 (0.2734)
4520000 (0.7689)20000 (10.3855)20000 (0.8261)
3520000 (4.2200)20000 (13.2479)20000 (2.9895)
2520000 (11.0556)20000 (15.9855)20000 (10.2940)