COMPUTATION OF RADON DATA FROM CONE-BEAM DATA IN CONE-BEAM IMAGING

In the latest development in x-ray inspection,cone beam x-rays are use d to inspect three-dimensional objects. However, the cone beam project ion data collected are not compatible with image reconstruction by thr ee-dimensional Radon inversion. In this paper a method is developed to convert the cone beam data to Radon data which can then be inverted t o yield the object. The Radon data are generated directly on the polar grid lines on a set of coaxial vertical planes in the Radon space for Radon inversion, and therefore only 1-dimensional interpolation in th e Radon space is needed to obtain Radon data at the desired locations.