Reduction of inspection times with three-dimensional X-ray tomography of sea freight containers by utilization of compressed sensing reconstruction methods

Inspection of sea freight containers in 3-D yields many advantages over state-of-the-art 2-D imaging. In most cases, it can be a real alternative to manual inspection to clarify suspicious appearing or not identifiable regions from 2-D images. One drawback is that many projections are needed for the 3-D volume reconstruction, including much scan time and dose applied to freight. One solution to overcome such constraints is to use sophisticated reconstruction algorithms such as compressed sensing that produce a high image quality from relatively few projections