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Creating an experimental testbed for information-theoretic analysis of architectures for x-ray anomaly detection
Author
Coccarelli, DavidGreenberg, Joel A.
Mandava, Sagar
Gong, Qian
Huang, Liang-Chih
Ashok, Amit
Gehm, Michael E.
Affiliation
Univ Arizona, ECE DeptUniv Arizona, Coll Opt Sci
Issue Date
2017-05-01
Metadata
Show full item recordPublisher
SPIE-INT SOC OPTICAL ENGINEERINGCitation
David Coccarelli, Joel A. Greenberg, Sagar Mandava, Qian Gong, Liang-Chih Huang, Amit Ashok, Michael E. Gehm, "Creating an experimental testbed for information-theoretic analysis of architectures for x-ray anomaly detection", Proc. SPIE 10187, Anomaly Detection and Imaging with X-Rays (ADIX) II, 1018709 (1 May 2017); doi: 10.1117/12.2263033; http://dx.doi.org/10.1117/12.2263033Rights
© 2017 SPIE.Collection Information
This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.Abstract
Anomaly detection requires a system that can reliably convert measurements of an object into knowledge about that object. Previously, we have shown that an information-theoretic approach to the design and analysis of such systems provides insight into system performance as it pertains to architectural variations in source fluence, view number/angle, spectral resolution, and spatial resolution.(1) However, this work was based on simulated measurements which, in turn, relied on assumptions made in our simulation models and virtual objects. In this work, we describe our experimental testbed capable of making transmission x-ray measurements. The spatial, spectral, and temporal resolution is sufficient to validate aspects of the simulation-based framework, including the forward models, bag packing techniques, and performance analysis. In our experimental CT system, designed baggage is placed on a rotation stage located between a tungsten-anode source and a spectroscopic detector array. The setup is able to measure a full 360 rotation with 18,000 views, each of which defines a 10 ms exposure of 1,536 detector elements, each with 64 spectral channels. Measurements were made of 1,000 bags that comprise 100 clutter instantiations each with 10 different target materials. Moreover, we develop a systematic way to generate bags representative of our desired clutter and target distributions. This gives the dataset a statistical significance valuable in future investigations.ISSN
0277-786XVersion
Final published versionSponsors
US Department of Homeland Security through the Advanced X-Ray Material Discrimination Programae974a485f413a2113503eed53cd6c53
10.1117/12.2263033