Geodesic
Regularizing filtrating of projections for two-dimensional tomography algorithms
Sibirskij žurnal vyčislitelʹnoj matematiki, Tome 11 (2008) no. 2, pp. 187-200

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The regularizing filters for tomography algorithms are proposed and investigated. The method for regularization parameter determination was developed on the basis of a discrepancy criterion. The numerical simulations were carried out. In particular, the proposed filtration of projections was compared to be Shepp–Logan one. 
@article{SJVM_2008_11_2_a5,
     author = {A. V. Likhachev},
     title = {Regularizing filtrating of projections for two-dimensional tomography algorithms},
     journal = {Sibirskij \v{z}urnal vy\v{c}islitelʹnoj matematiki},
     pages = {187--200},
     publisher = {mathdoc},
     volume = {11},
     number = {2},
     year = {2008},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/SJVM_2008_11_2_a5/}
}
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A. V. Likhachev. Regularizing filtrating of projections for two-dimensional tomography algorithms. Sibirskij žurnal vyčislitelʹnoj matematiki, Tome 11 (2008) no. 2, pp. 187-200. http://geodesic.mathdoc.fr/item/SJVM_2008_11_2_a5/