X射线图像灰度值与透照厚度的定量关系

郭文明; 陈宇亮

doi:10.11973/wsjc201602004

X射线图像灰度值与透照厚度的定量关系

北京邮电大学软件学院, 北京 100876

基金项目:

国家重大科学仪器设备开发专项资助项目(2013YQ240803)

详细信息

作者简介:
郭文明(1967-),男,副教授,主要从事图像处理的教学与科研工作。

中图分类号: TG115.28
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- 文章访问数: 17
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- PDF下载量: 3
出版历程
- 收稿日期: 2015-06-22
- 刊出日期: 2016-02-09

Quantitative Relationship between Gray Value of X-ray Image and Radiographic Thickness

摘要

摘要: X射线数字成像检测技术中, 射线图像对于沿透照方向的厚度变化, 表现为灰度值的变化, 如何由灰度值的变化得到被检物体实际厚度的变化成为业内研究的重点。基于Beer定理, 结合影响X射线机射线强度的因素和射线强度与数字图像的转换关系, 推导出灰度值与透照厚度之间的定量关系; 通过搭建试验平台, 得到系列数据, 对理论计算值和试验数据测量值进行了比对验证。结果表明: 理论灰度值与实际测试相差误差不超过灰度满量程的±10%。
- X射线 /
- 数字成像 /
- 缺陷 /
- 灰度值 /
- 定量分析
Abstract: In the technology of X-ray digital imaging detection, the X-ray imaging shows changes in gray value for thickness variations along the transillumination direction. The way how to get the object's actual thickness changes by grey value change becomes the focus of the research. In this paper, based on Beer theorem and combining with the factors influencing the intensity of X-ray machine and ray intensity and digital image transformation relations, the quantitative relationship between the grey value and thickness is deduced. By setting up the experimental platform to get series of experimental data, the theoretical calculation value and experimentally measured values are compared to verify. The results show that the difference between theoretical gray value and actual grey value is not more than gray full range of ±10%.
- X-ray /
- Digital imaging /
- Detection /
- Gray value /
- Quantitative analysis

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参考文献(15)

[1]	SIM L M, TAN T C, MON A A, et al. X-ray absorption-based technique to measure the thickness of multi-layered structures［J］. Ndt & E International, 2009, 42(4):291-296.
[2]	PENG Guang-han, YANG Xue-heng, HAN Zhong, et al. Hardening correction model of energy spectrum for continuous spectrum X-ray ICT ［J］.Spectroscopy and Spectral Analysis,2005,25(11):1880-1883.
[3]	XU Guang-duo, WANG Li-qiang, TONG Jian-min. Research on calibration model of X-ray thickness gauge［J］.Atomic Energy Science and Technology,2014,5:925-929.
[4]	CHEN Ping, HAN Yan, PAN Jin-xiao. Research on X-ray multispectrum imaging based on variable energy ［J］.Spectroscopy and Spectral Analysis,2013,32(5):1383-1387.
[5]	PENG G H, CAI X H, YANG X H. Numerical analysis of hardening correction model of energy spectrum for X-ray TICT［J］. Nondestructive Testing, 2007.
[6]	CULLEN D E. A simple model model of photon transport［J］.Nucl InstrumMetthodsPhys Res,1995,B 101(1):499-510.
[7]	KOLKOORI S, WROBEL N, ZSCHERPEL U, et al. A new X-ray backscatter imaging technique for non-destructive testing of aerospace materials［J］. Ndt & E International, 2014,70:41-52.
[8]	SELTZER S M. Calculation of photon mass enery-transfer and mass enery-absorbtioncoefficient［J］.Radiat Res,1993,136(2):147-170.
[9]	REZA H P R, REZAIE A H, SADEGHI S H H, et al. A density-based fuzzy clustering technique for non-destructive detection of defects in materials［J］. Ndt& E International,2007,40(4):337-346.
[10]	CASALTA S, DAQUINO G G, METTEN L, et al. Digital image analysis of X-ray and neutron radiography for the inspection and the monitoring of nuclear materials［J］. Ndt & E International,2003,36(5):349-355.
[11]	赵肖东,蔡建刚,陈明,等. 航空零部件X射线数字成像检测系统［J］. 无损检测, 2013, 35(4):57-59.
[12]	王玮,李公平,潘小东,等. 工业CT锥束X射线能谱及强度的分布模拟［J］.无损检测,2014,36(3):9-13.
[13]	冯长春,周炜. X射线衰减系数与射线管电压的关系初探［J］.无损探伤,1997,19(1):11-13.
[14]	高阔,于虹,郭铁桥. 射线数字成像(DR)技术在电力工业检测中的应用［J］. 无损检测, 2013, 35(11):76-78.
[15]	连广, 王庭魁.材中X射线衰减规律的验证及吸收系数测定［J］.林业科技, 1990(6):28-30.

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文章访问数: 17
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X射线图像灰度值与透照厚度的定量关系

作者简介: 郭文明(1967-),男,副教授,主要从事图像处理的教学与科研工作。

计量

出版历程

Quantitative Relationship between Gray Value of X-ray Image and Radiographic Thickness

计量

出版历程

目录

作者简介:
郭文明(1967-),男,副教授,主要从事图像处理的教学与科研工作。