Abstract
The effects of reducing the number of projections and using sinogram interpolation in X-ray computed tomography measurement were evaluated by considering the quality of volumetric reconstruction and extracted surface topographies. Using a test sample, the number of projections acquired was reduced in steps of 20% from the theoretical reference value. The obtained data sets were upsampled by sinogram interpolation. The quality of the volumetric reconstructions was assessed by introducing dedicated measures of noise and resolution. The surface topographies extracted from the data sets were evaluated using statistical topography models. It was shown that sinogram interpolation can be used as a tool to reduce the number of projections and still obtain sufficient quality surface topographies.
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