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Tomography by iterative convolution - Empirical study and application to interferometryAn algorithm for computer tomography has been developed that is applicable to reconstruction from data having incomplete projections because an opaque object blocks some of the probing radiation as it passes through the object field. The algorithm is based on iteration between the object domain and the projection (Radon transform) domain. Reconstructions are computed during each iteration by the well-known convolution method. Although it is demonstrated that this algorithm does not converge, an empirically justified criterion for terminating the iteration when the most accurate estimate has been computed is presented. The algorithm has been studied by using it to reconstruct several different object fields with several different opaque regions. It also has been used to reconstruct aerodynamic density fields from interferometric data recorded in wind tunnel tests.
Document ID
19840057950
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Vest, C. M.
(Michigan Univ. Ann Arbor, MI, United States)
Prikryl, I.
(Michigan, University Ann Arbor, MI, United States)
Date Acquired
August 12, 2013
Publication Date
July 15, 1984
Publication Information
Publication: Applied Optics
Volume: 23
ISSN: 0003-6935
Subject Category
Instrumentation And Photography
Accession Number
84A40737
Funding Number(s)
CONTRACT_GRANT: NAG2-118
Distribution Limits
Public
Copyright
Other

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