TITLE

A ring artifact suppression algorithm based on a priori information

AUTHOR(S)
Titarenko, Sofya; Titarenko, Valeriy; Kyrieleis, Albrecht; Withers, Philip J.
PUB. DATE
August 2009
SOURCE
Applied Physics Letters;8/17/2009, Vol. 95 Issue 7, p071113
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
In this letter, ring artifacts in two-dimensional (2D) tomographic slices are considered. For a parallel beam geometry we propose an interactive algorithm, which removes the artifacts while preserving fine image details. The algorithm comprises two stages and is based on a priori information about the true attenuation coefficient in some areas of a 2D slice. Even in the absence of any a priori information the initial stage of the algorithm can already provide good ring artifact suppression.
ACCESSION #
43887426

 

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