Reduction of Ring Artifacts in High Resolution X-Ray Microtomography Images

  • Maria Axelsson
  • Stina Svensson
  • Gunilla Borgefors
Part of the Lecture Notes in Computer Science book series (LNCS, volume 4174)


Ring artifacts can occur in reconstructed images from X-ray microtomography as full or partial circles centred on the rotation axis. In this paper, a 2D method is proposed that reduces these ring artifacts in the reconstructed images. The method consists of two main parts. First, the artifacts are localised in the image using local orientation estimation of the image structures and filtering to find ring patterns in the orientation information. Second, the map of the located artifacts is used to calculate a correction image using normalised convolution. The method is evaluated on 2D images from volume data of paper fibre imaged at the European Synchrotron Radiation Facility (ESRF) with high resolution X-ray microtomography. The results show that the proposed method reduces the artifacts and restores the pixel values for all types of partial and complete ring artifacts where the signal is not completely saturated.


Local Orientation Image Structure Correction Image Angular Direction European Synchrotron Radiation Facility 


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Copyright information

© Springer-Verlag Berlin Heidelberg 2006

Authors and Affiliations

  • Maria Axelsson
    • 1
  • Stina Svensson
    • 1
  • Gunilla Borgefors
    • 1
  1. 1.Centre for Image Analysis, Swedish University of Agricultural SciencesUppsalaSweden

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