view article
Figure 5
Reconstructed ptychographic images of the phantom cell of Fig. 3[link] obtained at photon fluences nph from 0.8 to 7855.8 photons pixel−1. The images in successive columns are from a simulated dataset with no encoding (left), and then with loss encoding schemes (a), (b), and (c) in the subsequent columns. These images were obtained using a least-squares cost function, rather than a Poisson noise cost function, which leads to a smoothed appearance at low fluences (Du et al., 2020BB11). Use of the lossy encoding scheme (a) has almost no effect on reconstructed image quality, while the increasing degree of loss provided in schemes (b) and especially (c) lead to lower quality reconstructed images at very low fluence.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 28| Part 1| January 2021| Pages 292-300
https://doi.org/10.1107/S1600577520013326
Follow J. Synchrotron Rad.
Sign up for e-alerts
E-alerts
Follow J. Synchrotron Rad. on Twitter
Twitter
Follow us on facebook
Facebook
Sign up for RSS feeds
RSS