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Open AccessArticle

Complete Ring Artifacts Reduction Procedure for Lab-Based X-ray Nano CT Systems

1
CEITEC—Central European Institute of Technology, Brno University of Technology, Purkyňova 656/123, 612 00 Brno, Czech Republic
2
Rigaku Corporation, 3-9-12, Matsubara-cho, Akishima-shi, Tokyo 196-8666, Japan
*
Author to whom correspondence should be addressed.
Sensors 2021, 21(1), 238; https://doi.org/10.3390/s21010238
Received: 7 December 2020 / Revised: 22 December 2020 / Accepted: 23 December 2020 / Published: 1 January 2021
(This article belongs to the Special Issue Tomography Sensing Technologies)
In this article, we introduce a new ring artifacts reduction procedure that combines several ideas from existing methods into one complex and robust approach with a goal to overcome their individual weaknesses and limitations. The procedure differentiates two types of ring artifacts according to their cause and character in computed tomography (CT) data. Each type is then addressed separately in the sinogram domain. The novel iterative schemes based on relative total variations (RTV) were integrated to detect the artifacts. The correction process uses the image inpainting, and the intensity deviations smoothing method. The procedure was implemented in scope of lab-based X-ray nano CT with detection systems based on charge-coupled device (CCD) and scientific complementary metal–oxide–semiconductor (sCMOS) technologies. The procedure was then further tested and optimized on the simulated data and the real CT data of selected samples with different compositions. The performance of the procedure was quantitatively evaluated in terms of the artifacts’ detection accuracy, the comparison with existing methods, and the ability to preserve spatial resolution. The results show a high efficiency of ring removal and the preservation of the original sample’s structure. View Full-Text
Keywords: ring artifacts reduction; CCD detector; sCMOS detector; high-resolution X-ray computed tomography; relative total variation ring artifacts reduction; CCD detector; sCMOS detector; high-resolution X-ray computed tomography; relative total variation
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MDPI and ACS Style

Šalplachta, J.; Zikmund, T.; Zemek, M.; Břínek, A.; Takeda, Y.; Omote, K.; Kaiser, J. Complete Ring Artifacts Reduction Procedure for Lab-Based X-ray Nano CT Systems. Sensors 2021, 21, 238. https://doi.org/10.3390/s21010238

AMA Style

Šalplachta J, Zikmund T, Zemek M, Břínek A, Takeda Y, Omote K, Kaiser J. Complete Ring Artifacts Reduction Procedure for Lab-Based X-ray Nano CT Systems. Sensors. 2021; 21(1):238. https://doi.org/10.3390/s21010238

Chicago/Turabian Style

Šalplachta, Jakub; Zikmund, Tomáš; Zemek, Marek; Břínek, Adam; Takeda, Yoshihiro; Omote, Kazuhiko; Kaiser, Jozef. 2021. "Complete Ring Artifacts Reduction Procedure for Lab-Based X-ray Nano CT Systems" Sensors 21, no. 1: 238. https://doi.org/10.3390/s21010238

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