SART-Type Image Reconstruction from a Limited Number of Projections with the Sparsity Constraint
Figure 3
Reconstructed 128 128 images from noise-free projection datasets. The 1st, 2nd, and 3rd rows are reconstructed using Scheme-A, Scheme-B, and Scheme-C, respectively, and the 1st, 2nd, 3rd, and 4th columns are from 55, 45, 35, and 25 views respectively (the display window: []).
