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• W3134484599 abstract "<p style='text-indent:20px;'>Limited-angle reconstruction is a very important but challenging problem in the field of computed tomography (CT) which has been extensively studied for many years. However, some difficulties still remain. Based on the theory of visible and invisible boundary developed by Quinto et.al, we propose a reconstruction model for limited-angle CT, which encodes the visible edges as priors to recover the invisible ones. The new model utilizes generalized shrinkage operators as regularizers to perform edge-preserving smoothing such that the visible edges are employed as anchors to recover piecewise-constant or piecewise-smooth reconstructions, while noises and artifacts are suppressed or removed. This work extends our previous research on limited-angle reconstruction which employs gradient <inline-formula><tex-math id=M1>begin{document}$ ell_0 $end{document}</tex-math></inline-formula> and <inline-formula><tex-math id=M2>begin{document}$ ell_1 $end{document}</tex-math></inline-formula> norm regularizers. The effectiveness of the proposed model and its corresponding solving algorithm shall be verified by numerical experiments with simulated data as well as real data.</p>" @default.
• W3134484599 created "2021-03-15" @default.
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• W3134484599 date "2021-01-01" @default.
• W3134484599 modified "2023-10-16" @default.
• W3134484599 title "Limited-angle CT reconstruction with generalized shrinkage operators as regularizers" @default.
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• W3134484599 doi "https://doi.org/10.3934/ipi.2021019" @default.
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