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2014
Conference Paper
Titel
Few-view X-ray 3D computed tomography for security applications with the example of sea freight containers
Abstract
X-ray imaging techniques are one of the core technologies for several security and safety applications. 3D computed tomography (CT) as a high-end scanning method offers advantages over conventional 2D imaging in that it is able to identify overlapping objects. However, 3D X-ray techniques are not yet widely used because of the technical and economic challenges regarding the required hard- and software. The method of few-view tomography, which is presented in this paper, tackles this problem by reducing time consumption and cost of 3D analyses, while keeping an adequate image quality. For this, optimized scanning trajectories as well as an advanced algebraic reconstruction technique (ART) are needed. Both points are discussed in this paper and results from the scanning of a 10 ft sea freight container are presented. It is possible to achieve reasonable image quality with only 10 % of the projections of the conventional data set.
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