Wire transfer function analysis for castellated dual-energy x-ray detectors.
An investigation into the spatial resolving power of a castellated linear dual-energy x-ray detector array is reported. The detector was developed for use in aviation security screening applications. Experiments employing different gauges of lead wire are used to plot a wire transfer function. A numerical simulation is developed to predict and underpin the empirical results. The suitable processing of the castellated detector signals helps to maintain spatial resolving power while affording a 50% reduction in x-ray sensing elements. This encouraging result has formed the basis for an ongoing investigation into materials discrimination capability of the castellated detector array.
Chan
Jer Wang
JW
Vision Systems Group, School of Computing and Informatics, Nottingham Trent University, Newton Building, N225, Burton Street, Nottingham NG1 4BU, United Kingdom.
Evans
James Paul Owain
JP
Yong
Yen San
YS
Monteith
Andrew
A