Ring artifact correction for X-ray computed tomography

被引：1

作者：

Ma, Jiming ^{[1
,2
]}

Song, Yan ^{[2
]}

Wang, Qunshu ^{[2
]}

Song, Guzhou ^{[2
]}

Zhang, Jianqi ^{[1
]}

Xia, Jingtao ^{[2
]}

Han, Changcai ^{[2
]}

Duan, Baojun ^{[2
]}

Du, Jiye ^{[2
]}

Zhou, Ming ^{[2
]}

机构：

[1] School of Physics and Optoelectronic Engineering, Xidian University, Xi'an

[2] State Key Laboratory of Intense Pulsed Radiation Simulation and Effect, Northwest Institute of Nuclear Technology, Xi'an

来源：

Qiangjiguang Yu Lizishu/High Power Laser and Particle Beams | 2014年 / 26卷 / 12期

关键词：

Polynomial fit; Ring artifact; Sinogram image; X-ray computed tomography;

D O I：

10.11884/HPLPB201426.124001

中图分类号：

学科分类号：

摘要：

In this paper, a novel preprocessing technique is proposed for the correction of ring artifact in X-ray CT image. By fitting each projection in sinogram image with piecewise polynomial, a set of candidate correction factors for mis-calibrated detector is created and then the factor with maximum probability occurrence is picked out to rectify the projection data. Principle and procedure of the method is illustrated. Tests under different condition show that, sparse or continuous ring artifact in the CT image can both be well rectified effectively, while spatial resolution of the image preserved. CT images for multi-material object can also be corrected by the method. ©, 2014, Editorial Office of High Power Laser and Particle Beams. All right reserved.

引用

页数：6

共 15 条

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