Regularizing method for the analysis of CT images of welded joints of pipelines

The aim of the paper is to improve the accuracy of the estimation of the shape and size of cracks in the welded seams of pipelines from their X-ray tomograms. Based on the results of previous studies, the procedure of deconvolution of projection data before reconstruction is considered. The influence of the value of the regularization parameter in the deconvolution algorithm based on the Fourier transform on the quality of the tomograms is investigated. In the numerical simulations, the estimates of the optimal values of the regularization parameter for different data recording conditions are derived. (paper)