A Novel SURE-Based Criterion for Parametric PSF Estimation
A Novel SURE-Based Criterion for Parametric PSF Estimation
复制标题
一种新颖的基于 SURE 的参数 PSF 估计标准
DOI:
10.1109/tip.2014.2380174
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发表时间:
2015-02
影响因子:
10.6
通讯作者:
Thierry Blu
中科院分区:
文献类型:
--
作者:
Feng Xue;Thierry Blu
We propose an unbiased estimate of a filtered version of the mean squared error - the blur-SURE (Stein's unbiased risk estimate)-as a novel criterion for estimating an unknown point spread function (PSF) from the degraded image only. The PSF is obtained by minimizing this new objective functional over a family of Wiener processings. Based on this estimated blur kernel, we then perform nonblind deconvolution using our recently developed algorithm. The SURE-based framework is exemplified with a number of parametric PSF, involving a scaling factor that controls the blur size. A typical example of such parametrization is the Gaussian kernel. The experimental results demonstrate that minimizing the blur-SURE yields highly accurate estimates of the PSF parameters, which also result in a restoration quality that is very similar to the one obtained with the exact PSF, when plugged into our recent multi-Wiener SURE-LET deconvolution algorithm. The highly competitive results obtained outline the great potential of developing more powerful blind deconvolution algorithms based on SURE-like estimates.
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影响因子:
10.6
作者:
S. D. Babacan;R. Molina;A. Katsaggelos
通讯作者:
S. D. Babacan;R. Molina;A. Katsaggelos
DOI:
10.1145/1661412.1618491
发表时间:
2009-12
期刊:
ACM SIGGRAPH Asia 2009 papers
影响因子:
--
作者:
Sunghyun Cho;Seungyong Lee
通讯作者:
Sunghyun Cho;Seungyong Lee
影响因子:
4.4
作者:
Luisier, Florian;Vonesch, Cedric;Unser, Michael
通讯作者:
Unser, Michael
DOI:
--
发表时间:
1969
期刊:
--
影响因子:
--
作者:
A. Moffat
通讯作者:
A. Moffat
DOI:
10.1201/9781420007299-5
发表时间:
2007
期刊:
--
影响因子:
--
作者:
Tom E. Bishop;S. D. Babacan;Bruno Amizic;A. Katsaggelos;Tony F. Chan;R. Molina
通讯作者:
Tom E. Bishop;S. D. Babacan;Bruno Amizic;A. Katsaggelos;Tony F. Chan;R. Molina