Few-view gamma tomography used to monitor scabbing and shear fracture in a spherical iron shell compressed by explosion

Konovalov, Alexander; Mogilenskikh, Dmitry V.; Козлов, Е. А.; Vlasov, Vitaly V.; Kiselev, A. N.; Kovalev, E. V.; Zakharov, M. N.; Povyshev, V. N.; Stavrietskii, V. I.

doi:10.1134/s1061830908010026

Cited by 7 publications

(1 citation statement)

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“…A need to reconstruct the inner structure of an object in conditions when a few projections (usually less than 10) are only registered arises in many areas of tomography applications. ese are, for example, nondestructive testing in industry [2,3], luggage inspection [3,4], plasma emission tomography [5], tomography of explosion-compressed metal shells [6], fast detonation research [7], and other. e main problem of few-views tomography is that reconstructed images are not free from artifacts which result from strongly limited data and make the reproduction of spatial structures less accurate.…”

Section: Introductionmentioning

confidence: 99%

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

Konovalov

Vlasov

2013

ISRN Signal Processing

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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.

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Section: Introductionmentioning

confidence: 99%