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Figure 9
Hierarchical method. The optimization process begins with lower-resolution projection data. The result from this lower-resolution reconstruction is then up-sampled and serves as the initial point for the next cycle, which needs fewer iterations. Panel (a) represents the ground truth, and panel (b) is an area of interest within (a). Panel (c) is the same region of interest from a 100-iteration reconstruction at full resolution, and panel (d) shows the reconstruction achieved through the hierarchical method. The hierarchical method takes one-fifth of the time required for reconstruction at the full resolution to achieve the same convergence.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 31| Part 1| January 2024| Pages 85-94
https://doi.org/10.1107/S1600577523008962
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