An information theoretic approach to system optimization accounting for material variability

Coccarelli, David; Greenberg, Joel A.; Thamvichai, Ratchaneekorn; Voris, Jay; Masoudi, Ahmad; Ashok, Amit; Gehm, Michael E.

doi:10.1117/12.2305227

Cited by 1 publication

(2 citation statements)

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“…Instead, we assume access to these X-ray material properties, but allow for material variability to exist. 1,2 This variability may be due to variations in processing, history, temperature, packing, chemical composition, etc. which may arise naturally as well as noise or related statistical uncertainty that may be present in the measurement.…”

Section: Motivation For Hybrid Measurement: a Toy Problemmentioning

confidence: 99%

“…The challenge to performing accurate, material-based threat detection via transmission measurements stems from the fundamental X-ray-matter interaction physics coupled with the inherent variability of materials. 1,2 These two elements conspire to create a considerable overlap between threat and non-threat materials in 'transmission space.' Orthogonal technologies, such as X-ray diffraction tomography (XRDT), provide complementary, material-specific information that has been shown to provide additional features by which threat and non-threat materials can be better separated.…”

Section: Introductionmentioning

confidence: 99%

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Motivations and methods for the analysis of multi-modality x-ray systems for explosives detection

Carpenter

Ding

Hurlock

et al. 2019

Anomaly Detection and Imaging With X-Rays (ADIX) IV

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Transmission-based imaging and X-ray diffraction-based material analysis have largely developed independently. However, for a variety of applications ranging from in-vivo soft tissue analysis to concealed explosives detection, it is necessary to realize high-fidelity, spatially-resolved material discrimination. We therefore seek to understand to what degree transmission and X-ray diffraction (XRD) complement one another and can be implemented practically, particularly in the case of explosives detection in aviation security. Using a combination of simulated and experimental data, we identify the relative value of the X-ray signatures available to transmission and XRD measurements, and explore how the measurement fidelity can impact these results.

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Section: Motivation For Hybrid Measurement: a Toy Problemmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%