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Coded Aperture Imaging Application in One-sided Imaging of Visually Obscured Objects.

机译：编码孔径成像在视觉上遮盖物体的单面成像中的应用。

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摘要

The physical properties of visible light and its interaction with matter create obstructions the human eye cannot explore. High energy radiation has been used as an alternative to visible light to penetrate these concealed regions and reveal their contents. However, traditional imaging techniques require a two-sided apparatus with a radiation source and a detector on opposite sides of the concealed object.;The purpose of this study was to create and test a coded aperture imaging system using backscattered x-rays. This would enable one-sided imaging of concealed objects and demonstrate whether a portable imaging system was feasible. The results obtained from conducting a computer simulation, visible light experiments, and x-ray experiments proved that the process works, however, the x-ray flux levels required were too high for a portable system, based upon the current equipment available at UOIT.;One-sided imaging of concealed objects is made possible by a technique called backscatter imaging, utilizing high energy radiation. However, the signal produced by backscatter imaging is inherently weak, which makes interpretation difficult. One of the most promising techniques for recovering the weak signal is the coding and decoding provided by Coded Aperture Imaging (CAI).
机译：可见光的物理特性及其与物质的相互作用会造成人眼无法探索的障碍。高能辐射已被用作可见光的替代品，以穿透这些隐藏区域并显示其内容。但是，传统的成像技术需要一个双面设备，在隐藏的物体的相对两侧带有一个辐射源和一个探测器。本研究的目的是创建和测试使用反向散射X射线的编码孔径成像系统。这将使隐藏物体的单面成像成为可能，并证明便携式成像系统是否可行。通过进行计算机模拟，可见光实验和X射线实验获得的结果证明了该过程的有效性，但是，根据UOIT现有的设备，便携式系统所需的X射线通量水平太高。 ;隐藏的物体的单面成像通过一种称为反向散射成像的技术得以实现，该技术利用了高能辐射。然而，由后向散射成像产生的信号本来就很弱，这使解释变得困难。恢复微弱信号的最有前途的技术之一是编码孔径成像（CAI）提供的编码和解码。

著录项

  • 作者

    Scott, William R.;

  • 作者单位

    University of Ontario Institute of Technology (Canada).;

  • 授予单位 University of Ontario Institute of Technology (Canada).;
  • 学科 Engineering Mechanical.
  • 学位 M.A.Sc.
  • 年度 2011
  • 页码 181 p.
  • 总页数 181
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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