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.
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 in-
terpretation di cult. One of the most promising techniques for recovering
the weak signal is the coding and decoding provided by Coded Aperture
Imaging (CAI).
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, visi-
ble light experiments, and x-ray experiments proved that the process works,
however, the x-ray
ux levels required were too high for a portable system,
based upon the current equipment available at UOIT. / UOIT
| Identifer | oai:union.ndltd.org:LACETR/oai:collectionscanada.gc.ca:OOSHDU.10155/157 |
| Date | 17 May 2011 |
| Creators | Scott, William |
| Contributors | Waller, Ed, Nokleby, Scott |
| Source Sets | Library and Archives Canada ETDs Repository / Centre d'archives des thèses électroniques de Bibliothèque et Archives Canada |
| Language | English |
| Detected Language | English |
| Type | Thesis |
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