2010 MRes projects
- A feasibility study of the use of ground penetrating radar and metal oxide semiconductor sensors on a mobile platform for security applications
- The use of forensic evidence in the prosecution of terrorism cases in Britain
- Scintillation materials for the detection of special nuclear materials (SNMs)
- Looking beyond borders: Identification, information and the diffusion of conflicts.
- How hard can it be?: A study investigating user trust decisions in e-commerce
- Non-contact object localisation for automated 'on-belt- tomosynthesis
- Immmunising the Internet
- Investigating forward scatter radar for maritime target detection using statistical and comparative study
- The spatial distribution of post-blast RDX residue: Forensic implications
- Factors influencing intelligence analysts performance in using Bayesian and automated analysis of competing hypotheses
- Secure digital archive search using a probably approximately correct architecture
- Constraints and prospects of the application of scientific rigour to conflict early warning in Africa
- Prediction of crime patterns emerging from simulated search trajectories of individual offenders
- Download warnings: A rational rejection of security advice?
- The effectiveness of vehicle security devices to prevent car crime in Chile
- Inferring user behaviour despite wireless network encryption
- A feasibility study of the use of ground penetrating radar and metal oxide semiconductor sensors on a mobile platform for security applications
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Non-contact object localisation for automated 'on-belt- tomosynthesis
22 February 2012
Security screening technology, the part of aviation security focused on the detection of explosives and illicit materials, is both challenging and a costly. This report presents a study aiming to advance the potential of ‘On-belt’ Tomosynthesis (ObT), a fully automated pseudo-3D imaging system developed by Reid et al. (2010), as a post check-in baggage screening system with the implementation of close-range photogrammetry for accurate non-contact determination of the object location.
For this, two sets of x-ray image acquisition are made of a baggage phantom using the novel ObT technique. The algorithm developed to reconstruct 2D slice-images of the phantom requires three inputs, the x-ray images, the phantom location measurements and the phantom orientation values corresponding to each acquisition. Images are reconstructed twice, first using object localisation measurements produced manually and second produced using close-range photogrammetry.
The reconstructed images produced from each method are compared to each other for consistency. In addition, the phantom location and orientation measurements produced by each method are also compared. The correlation of all values for both acquisition sets shows the differences between the two methods are insignificant. The photogrammetrically-resulting reconstructed images are compared to the manually-resulting ones, which are taken as the “gold standard”, by means of subtracting the sequential reconstructed images. If two images are identical the result would be a 100% black image.
This study finds that the difference of the two produces on average 99.9% black images for both sets. This study demonstrates the feasibility of implementing close-range photogrammetry to a potential ObT system, for accurate non-contact determination of object location. However, there are several considerations which would enable this system to become a good-quality cost-effective post check-in baggage screening system in airports.
