16 October 2013 Radon transform based automatic metal artefacts generation for 3D threat image projection
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Threat Image Projection (TIP) plays an important role in aviation security. In order to evaluate human security screeners in determining threats, TIP systems project images of realistic threat items into the images of the passenger baggage being scanned. In this proof of concept paper, we propose a 3D TIP method which can be integrated within new 3D Computed Tomography (CT) screening systems. In order to make the threat items appear as if they were genuinely located in the scanned bag, appropriate CT metal artefacts are generated in the resulting TIP images according to the scan orientation, the passenger bag content and the material of the inserted threat items. This process is performed in the projection domain using a novel methodology based on the Radon Transform. The obtained results using challenging 3D CT baggage images are very promising in terms of plausibility and realism.
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Najla Megherbi, Najla Megherbi, Toby P. Breckon, Toby P. Breckon, Greg T. Flitton, Greg T. Flitton, Andre Mouton, Andre Mouton, "Radon transform based automatic metal artefacts generation for 3D threat image projection", Proc. SPIE 8901, Optics and Photonics for Counterterrorism, Crime Fighting and Defence IX; and Optical Materials and Biomaterials in Security and Defence Systems Technology X, 89010B (16 October 2013); doi: 10.1117/12.2028506; https://doi.org/10.1117/12.2028506


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