view article
Figure 11
Comparison of fully denoised tomograms of 00072, corresponding to the sinogram in Fig. 9[link]. Top-to-bottom: tomogram reconstructed from a noisy sinogram of the stack of projections Z (4)[link], of the estimate of stack of underlying projections [\widehat{\ln(A)}] with the proposed procedure with FBP reconstruction, and tomograms of the estimates for streak-free stacks [\hat{Y}] of Münch et al. (2009)BB27 with TV reconstruction, and [\hat{Y}] of Vo et al. (2018)BB35 with TV reconstruction. TV regularization was tuned visually, balancing residual noise and smoothing of signal. Compared with the reference methods, the proposed procedure manages to remove most streaks without significant loss of detail, as well as most Poissonian noise without excess smoothing of the signal.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 29| Part 3| May 2022| Pages 829-842
https://doi.org/10.1107/S1600577522002739
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