A practical method to calibrate the slant angle of central X-ray for laminography scanning system

Min Yang; Jianhua Zhu; Qi Liu; Shengling Duan; Lihong Liang; Xingdong Li; Wenli Liu; Fanyong Meng

doi:10.1016/j.ndteint.2014.02.004

A practical method to calibrate the slant angle of central X-ray for laminography scanning system

Min Yang^*
, Jianhua Zhu
, Qi Liu
, Shengling Duan
, Lihong Liang
, Xingdong Li
, Wenli Liu
, Fanyong Meng

^*Corresponding author for this work

School of Mechanical Engineering and Automation

Research output: Contribution to journal › Article › peer-review

21 Scopus citations

Abstract

Computed laminography (CL) has a particular function in plate-type structure tomography. For CL reconstruction, slant angle of the central X-ray is an important parameter and must be calibrated accurately. A practical feasible calibration method to determine the slant angle is proposed. According to this method, a spherical phantom is fixed on the rotary table and turns a full 360 rotation. Then, image processing and the least-square fitting are performed to figure out the locus of the projection. Consequently, the slant angle is achieved in accordance with the property of the fitted ellipse. The experimental results prove that this method is easy to implement and meet the inspection requirements.

Original language	English
Pages (from-to)	13-20
Number of pages	8
Journal	NDT and E International
Volume	64
DOIs	https://doi.org/10.1016/j.ndteint.2014.02.004
State	Published - Jun 2014

Keywords

Computed laminography (CL)
Ellipse fitting
Geometrical calibration
Slant angle

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10.1016/j.ndteint.2014.02.004

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title = "A practical method to calibrate the slant angle of central X-ray for laminography scanning system",

abstract = "Computed laminography (CL) has a particular function in plate-type structure tomography. For CL reconstruction, slant angle of the central X-ray is an important parameter and must be calibrated accurately. A practical feasible calibration method to determine the slant angle is proposed. According to this method, a spherical phantom is fixed on the rotary table and turns a full 360 rotation. Then, image processing and the least-square fitting are performed to figure out the locus of the projection. Consequently, the slant angle is achieved in accordance with the property of the fitted ellipse. The experimental results prove that this method is easy to implement and meet the inspection requirements.",

keywords = "Computed laminography (CL), Ellipse fitting, Geometrical calibration, Slant angle",

author = "Min Yang and Jianhua Zhu and Qi Liu and Shengling Duan and Lihong Liang and Xingdong Li and Wenli Liu and Fanyong Meng",

year = "2014",

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pages = "13--20",

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T1 - A practical method to calibrate the slant angle of central X-ray for laminography scanning system

AU - Yang, Min

AU - Zhu, Jianhua

AU - Liu, Qi

AU - Duan, Shengling

AU - Liang, Lihong

AU - Li, Xingdong

AU - Liu, Wenli

AU - Meng, Fanyong

PY - 2014/6

Y1 - 2014/6

N2 - Computed laminography (CL) has a particular function in plate-type structure tomography. For CL reconstruction, slant angle of the central X-ray is an important parameter and must be calibrated accurately. A practical feasible calibration method to determine the slant angle is proposed. According to this method, a spherical phantom is fixed on the rotary table and turns a full 360 rotation. Then, image processing and the least-square fitting are performed to figure out the locus of the projection. Consequently, the slant angle is achieved in accordance with the property of the fitted ellipse. The experimental results prove that this method is easy to implement and meet the inspection requirements.

AB - Computed laminography (CL) has a particular function in plate-type structure tomography. For CL reconstruction, slant angle of the central X-ray is an important parameter and must be calibrated accurately. A practical feasible calibration method to determine the slant angle is proposed. According to this method, a spherical phantom is fixed on the rotary table and turns a full 360 rotation. Then, image processing and the least-square fitting are performed to figure out the locus of the projection. Consequently, the slant angle is achieved in accordance with the property of the fitted ellipse. The experimental results prove that this method is easy to implement and meet the inspection requirements.

KW - Computed laminography (CL)

KW - Ellipse fitting

KW - Geometrical calibration

KW - Slant angle

UR - https://www.scopus.com/pages/publications/84896774633

U2 - 10.1016/j.ndteint.2014.02.004

DO - 10.1016/j.ndteint.2014.02.004

M3 - 文章

AN - SCOPUS:84896774633

SN - 0963-8695

VL - 64

SP - 13

EP - 20

JO - NDT and E International

JF - NDT and E International

ER -

A practical method to calibrate the slant angle of central X-ray for laminography scanning system

Abstract

Keywords

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