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ISRN Signal Processing
Volume 2013 (2013), Article ID 356291, 7 pages
http://dx.doi.org/10.1155/2013/356291
Research Article

Spatial Resolution Analysis for Few-Views Discrete Tomography Based on MART-AP Algorithm

Russian Federal Nuclear Center, Zababakhin Institute of Applied Physics, P.O. Box 245, Snezhinsk 456770, Chelyabinsk Region, Russia

Received 30 November 2012; Accepted 26 December 2012

Academic Editors: A. Fernandez-Caballero and C.-W. Kok

Copyright © 2013 Alexander B. Konovalov and Vitaly V. Vlasov. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

We study a new MART-AP algorithm of few-views discrete tomography. Its efficiency for high-frequency structure reproduction is investigated in a numerical experiment where we reconstruct a 2D model for the estimation of the spatial resolution limit. We estimate the modulation transfer function of the reconstruction algorithm and compare it with the modulation transfer function of projection distortions. Our results show that MART-AP weakly influences the contrast of spatial structures being reproduced and can be used for high-resolution reconstruction when only a few projections are registered.