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:
SIAM J. Sci. Comput.
影响因子:
--
通讯作者:
F. Benedetto;C. Estatico;S. Capizzano
F. Benedetto;C. Estatico;S. Capizzano
中科院分区:
其他
文献类型:
--
作者:
F. Benedetto;C. Estatico;S. Capizzano

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我们研究了二级循环代数中的超优 Frobenius 算子。我们考虑两个具体的观点:(1)成像中的正则化特性和(2)与预处理共轭梯度法相关的计算工作。给出并讨论了一些说明所提出技术的有效性的数值实验。
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.