Superoptimal Preconditioned Conjugate Gradient Iteration for Image Deblurring
Superoptimal Preconditioned Conjugate Gradient Iteration for Image Deblurring
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DOI:
10.1137/s1064827503421653
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发表时间:
2005-03
期刊:
影响因子:
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通讯作者:
F. Benedetto;C. Estatico;S. Capizzano
中科院分区:
文献类型:
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作者:
F. Benedetto;C. Estatico;S. Capizzano
We study the superoptimal Frobenius operators in the two-level circulant algebra. We consider two specific viewpoints: (1) the regularizing properties in imaging and (2) the computational effort in connection with the preconditioned conjugate gradient method. Some numerical experiments illustrating the effectiveness of the proposed technique are given and discussed.