par Defrise, Michel ;De Mol, Christine
Référence Optica acta, 30, 4, page (403-408)
Publication Publié, 1983
Article révisé par les pairs
Résumé : The tomography problem is investigated when the available projections are restricted to a limited angular domain. It is shown that a previous algorithm proposed for extrapolating the data to the missing cone in Fourier space is unstable in the presence of noise because of the ill-posedness of the problem. A regularized algorithm is proposed, which converges to stable solutions. The efficiency of both algorithms is tested by means of numerical simulations. © 1983 Taylor and Francis Group, LLC.

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