Open AccessANKAphase : software for single‐distance phase retrieval from inline X‐ray phase‐contrast radiographs
Author(s) -
Weitkamp T.,
Haas D.,
Wegrzynek D.,
Rack A.
Publication year - 2011
Publication title -
journal of synchrotron radiation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.172
H-Index - 99
ISSN - 1600-5775
DOI - 10.1107/s0909049511002895
Subject(s) - computer science , monochromatic color , radiography , software , phase retrieval , optics , contrast (vision) , tomography , tomographic reconstruction , phase (matter) , process (computing) , field (mathematics) , computer vision , computer graphics (images) , algorithm , physics , iterative reconstruction , mathematics , nuclear physics , pure mathematics , programming language , operating system , fourier transform , quantum mechanics
A computer program named ANKAphase is presented that processes X‐ray inline phase‐contrast radiographs by reconstructing the projected thickness of the object(s) imaged. The program uses a single‐distance non‐iterative phase‐retrieval algorithm described by David Paganin et al. [(2002), J. Microsc. 206 , 33–40]. Allowing for non‐negligible absorption in the sample, this method is strictly valid only for monochromatic illumination and single‐material objects but tolerates deviations from these conditions, especially polychromaticity. ANKAphase is designed to be applied to tomography data (although it does not perform tomographic reconstruction itself). It can process series of images and perform flat‐field and dark‐field correction. Written in Java, ANKAphase has an intuitive graphical user interface and can be run either as a stand‐alone application or as a plugin to ImageJ , a widely used scientific image‐processing program. A description of ANKAphase is given and example applications are shown.