Abstract
The non-destructive technique of computed tomography (CT) has been successfully used for imaging cross-sections of a variety of specimens using scanners of differing designs and spatial resolutions. The image reconstruction algorithm used in this study is the convolution backprojection method (CBP) with a variety of different filter functions. The reconstructed images show the effect of different filters as expected with decreasing high spatial frequency content as the smoothing is increased. This decrease in fine detail is quantified in terms of an error value, and this is compared with the predictions of an error formula. Reasonable agreement between the experimental results using a variety of specimens and this error formula is found for a number of filters.
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