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Investigating tomographic reconstruction with a priori geometrical information.

J. X-Ray Sci. Technol. 20, 1-10 (2012)
Verlagsversion Volltext DOI
Open Access Green möglich sobald Postprint bei der ZB eingereicht worden ist.
A novel strategy to perform tomographic image reconstruction is presented, based on the integration of a priori information about the target image. Such information may come from a different imaging tool or a synthetic model. For a given image quality, providing a priori image information reduces the amount of image information to be reconstructed. According to the data processing inequality this requires less input data or physical measurements, therefore reducing exposure to ionising radiation. A prototype algorithm is described, consisting of a penalized ART where some a priori edge information is encoded in an inhomogeneous, anisotropic smoothing kernel. The algorithm is tested on a 2-dimensional set-up based on the Shepp-Logan phantom.
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Publikationstyp Artikel: Journalartikel
Dokumenttyp Wissenschaftlicher Artikel
Schlagwörter Tomographic reconstruction; a priori information; edge detection; algebraic reconstruction method; complexity penalization
ISSN (print) / ISBN 0895-3996
e-ISSN 0895-3996
Quellenangaben Band: 20, Heft: 1, Seiten: 1-10 Artikelnummer: , Supplement: ,
Verlag IOS Press
Begutachtungsstatus Peer reviewed