Constrained regularized reconstruction of X-ray-DPCI tomograms with weighted-norm.

Details

Serval ID
serval:BIB_B520A0E7187B
Type
Article: article from journal or magazin.
Collection
Publications
Title
Constrained regularized reconstruction of X-ray-DPCI tomograms with weighted-norm.
Journal
Optics Express
Author(s)
Nilchian M., Vonesch C., Lefkimmiatis S., Modregger P., Stampanoni M., Unser M.
ISSN
1094-4087 (Electronic)
ISSN-L
1094-4087
Publication state
Published
Issued date
2013
Volume
21
Number
26
Pages
32340-32348
Language
english
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov't
Publication Status: ppublish
Abstract
In this paper we introduce a new reconstruction algorithm for X-ray differential phase-contrast Imaging (DPCI). Our approach is based on 1) a variational formulation with a weighted data term and 2) a variable-splitting scheme that allows for fast convergence while reducing reconstruction artifacts. In order to improve the quality of the reconstruction we take advantage of higher-order total-variation regularization. In addition, the prior information on the support and positivity of the refractive index is considered, which yields significant improvement. We test our method in two reconstruction experiments involving real data; our results demonstrate its potential for in-vivo and medical imaging.
Pubmed
Web of science
Create date
18/10/2014 14:55
Last modification date
20/08/2019 15:23
Usage data