A ring artifact suppression algorithm based on a priori information

Sofya Titarenko, Valeriy Titarenko, Albrecht Kyrieleis, Philip J. Withers

Research output: Contribution to journalArticlepeer-review

25 Citations (Scopus)


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.

Original languageEnglish
Article number071113
JournalApplied Physics Letters
Issue number7
Early online date21 Aug 2009
Publication statusPublished - 21 Aug 2009
Externally publishedYes


Dive into the research topics of 'A ring artifact suppression algorithm based on a priori information'. Together they form a unique fingerprint.

Cite this