Figure 2
Impact of downsampling data on alignment efficacy. (a) X pixel shift and (b) Y pixel shift with respect to the projection angle (θ) for both full resolution (360 × 2048 × 2048) in blue and downsampled (360 × 256 × 256) in red datasets. Example of sinogram (c) before and (d) after automatic alignment using downsampled data. The downsampled dataset took a nearly a fifth of the time that the full dataset took to align. |