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Figure 7
Evolution of the fast non-local phase retrieval in the projection domain for the same representative radiograph. The first row shows the raw projection and the initial Paganin estimate. The following rows show the back-projected residual and the preconditioned correction after iterations 1, 2 and 3. For each quantity type, the same grayscale range is used across iterations, making the rapid decrease of the correction amplitudes directly visible.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 33| Part 4| July 2026|
https://doi.org/10.1107/S1600577526004273
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