Development of Iterative Algorithms for Industrial Tomography

A.V.Likhachov, V.V.Pickalov, N.V.Chugunova, V.A.Baranov*

Computerized Tomography Group, Institute of Theoretical and Applied Mechanics,

Novosibirsk 630090, Russia Pickalov@itam.nsc.ru

*Institute of Introscopy, Tomsk 634028, Russia

Abstract - The limited-angle problem and the divergence of the probing beam are considered as the features of industrial tomography. Modifications of the algebraic algorithms ART and MART are studied under limited-angle conditions. In particular, the non-linear backprojection estimations are suggested as a first guess. A new iterative algorithm based on the Neumann series decomposition is developed for the tomography in divergent beams. Numerical simulations are carried out.

Keywords: limited-angle tomography, iterative algorithms