Fig. 7
From: Improved tomographic reconstruction of large-scale real-world data by filter optimization
Computation times for 512 projections and various numbers of detector pixels. In each case, the number of rows and columns in the reconstruction grid is identical to the number of detector pixels per projection. In a, the required time for computing SIRT-FBP filters is shown for 100 iterations using 16 CPU cores, and in b reconstruction times are shown for 100 iterations of SIRT, and the SIRT-FBP method using both FBP and gridrec. The FBP reconstructions are computed using a single GPU, and the gridrec reconstructions are computed using 16 CPU cores