Material Density Distribution of a Radial Symmetric Product from a Single X-Ray Radiograph
X-ray digital tomographic methods may be classified according to the number of projections and the angular coverage required to obtain the density distribution of the object under study. At one extremity stands computerized tomography which employs multiple projections and wide angular coverage (± π). At the other extremity stand reconstruction methods employing a single projection. As the number of projections decreases, the information provided for the reconstruction becomes more incomplete. The decrease in the information content may sometimes be compensated by the use of a priori knowledge about the product and thus alleviate to some extent the ill-posedness of the problem [l–4].
KeywordsSingle Projection Linear Attenuation Coefficient Gibbs Phenomenon Symmetric Object Reconstructed Profile
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- 2.K.C. Tam, J.W. Eberhard and K.W. Mitchell, limited-Angle X-ray CT Image Reconstructions in Industrial NDT in J. Boogaard and G.M. Van Dijk, Proc. of the 12th World Conf. on NDT, Elsevier Science Pub. ( Amsterdam, 1989 ), Vol. 1, p. 766.Google Scholar
- 3.K.C. Tam and L.J. Thomas III, ‘Digital Tomography Incorporating A Priori Information’, present SIDE Conf.Google Scholar
- 4.M.L.H. Siao and J.W. Eberhard, “A Model-Based Reconstruction Method for Incomplete Projection Industrial CT Imaging”, present QNDE Conf.Google Scholar
- 5.A. Notea, D. Pal and M. Deutsch, ‘Density Distribution in Cylindrically Symmetric Objects From a Single Radiographic Image’, in J. Farley and R.W. Nichols, NDT, Proc. 4-th Euro. Conf., Vol. 3, p. 2093, Pergamon Press (1988).Google Scholar
- 6.D. Pal, A. Notea, M. Deutsch, “Single Projection Tomography of Objects With Cylindrical Symmetric Density Distribution”, Trans. Isr. Nucl. Soc., Vol. 14 (1987), p. VI - 31.Google Scholar