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Figure 6
Error in the reconstructed ptychographic image as a function of fluence, for both the original ptychographic dataset and for data with the lossy encoding schemes (a), (b), and (c) applied. Shown here is the within-support mean-squared error (SMSE) calculated using equation (8)[link], where the support S corresponds to the set of pixels in the phantom (Fig. 3[link]) that contain `cell'-like features. As can be seen, it is only when one uses the more aggressive lossy encoding scheme (c) that one obtains a noticable increase in the SMSE error, and this happens at all fluences. Also indicated is the estimate of equation (7)[link] for the critical fluence of 360 photons pixel−1.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 28| Part 1| January 2021| Pages 292-300
https://doi.org/10.1107/S1600577520013326
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