Convergence rates in expectation for Tikhonov-type regularization of inverse problems with Poisson data
Convergence rates in expectation for Tikhonov-type regularization of inverse problems with Poisson data
复制标题
泊松数据反问题的吉洪诺夫型正则化的期望收敛率
DOI:
10.1088/0266-5611/28/10/104004
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发表时间:
2012
期刊:
影响因子:
2.1
通讯作者:
Hohage
中科院分区:
文献类型:
--
作者:
Werner;Hohage
In this paper, we study a Tikhonov-type method for ill-posed nonlinear operator equations g†= F (u†), where g† is an integrable, non-negative function. We assume that data are drawn from a Poisson process with density tg†, where t> 0 may be interpreted as an exposure time. Such problems occur in many photonic imaging applications including positron emission tomography, confocal fluorescence microscopy, astronomic observations and phase retrieval problems in optics. Our approach uses a Kullback–Leibler-type data fidelity functional and allows for general convex penalty terms. We prove convergence rates of the expectation of the reconstruction error under a variational source condition as t→∞ both for an a priori and for a Lepskii-type parameter choice rule.
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DOI:
--
发表时间:
2000
期刊:
影响因子:
--
作者:
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通讯作者:
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DOI:
--
发表时间:
2003
期刊:
影响因子:
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影响因子:
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作者:
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通讯作者:
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影响因子:
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作者:
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