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Reduction of Ring Artifacts in High Resolution X-Ray Microtomography Images
Uppsala University, Disciplinary Domain of Science and Technology, Mathematics and Computer Science, Centre for Image Analysis. Uppsala University, Disciplinary Domain of Science and Technology, Mathematics and Computer Science, Department of Information Technology, Computerized Image Analysis.
Uppsala University, Disciplinary Domain of Science and Technology, Mathematics and Computer Science, Centre for Image Analysis.
Uppsala University, Disciplinary Domain of Science and Technology, Mathematics and Computer Science, Centre for Image Analysis.
2006 (English)In: Pattern Recognition: 28th DAGM Symposium, Berlin, Germany, September 2006, Proceedings, 2006, 61-70 p.Conference paper, Published paper (Refereed)
Abstract [en]

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.

Place, publisher, year, edition, pages
2006. 61-70 p.
Series
Lecture notes in computer science, ISSN 0302-9743 ; 4174
National Category
Computer Vision and Robotics (Autonomous Systems)
Identifiers
URN: urn:nbn:se:uu:diva-18443DOI: 10.1007/11861898_7ISBN: 978-3-540-44412-1 (print)OAI: oai:DiVA.org:uu-18443DiVA: diva2:46215
Available from: 2006-12-21 Created: 2006-12-21 Last updated: 2010-03-02Bibliographically approved

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Publisher's full texthttp://dx.doi.org/10.1007/11861898_7

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Axelsson, MariaSvensson, StinaBorgefors, Gunilla

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