Detecting Edges from Non-uniform Fourier Data via Sparse Bayesian Learning
Detecting Edges from Non-uniform Fourier Data via Sparse Bayesian Learning
复制标题
通过稀疏贝叶斯学习从非均匀傅立叶数据中检测边缘
DOI:
10.1007/s10915-019-00955-w
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发表时间:
2019
影响因子:
2.5
通讯作者:
Gelb, Anne
中科院分区:
文献类型:
--
作者:
Churchill, Victor;Gelb, Anne
In recent investigations, the problem of detecting edges given non-uniform Fourier data was reformulated as a sparse signal recovery problem with an-regularized least squares cost function. This result can also be derived by employing a Bayesian formulation. Specifically, reconstruction of an edge map usingregularization corresponds to a so-called type-I (maximum a posteriori) Bayesian estimate. In this paper, we use the Bayesian framework to design an improved algorithm for detecting edges from non-uniform Fourier data. In particular, we employ what is known as type-II Bayesian estimation, specifically a method called sparse Bayesian learning. We also show that our new edge detection method can be used to improve downstream processes that rely on accurate edge information like image reconstruction, especially with regards to compressed sensing techniques.
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DOI:
10.1111/j.2517-6161.1977.tb01600.x
发表时间:
1977-01-01
期刊:
JOURNAL OF THE ROYAL STATISTICAL SOCIETY SERIES B-METHODOLOGICAL
影响因子:
--
作者:
DEMPSTER, AP;LAIRD, NM;RUBIN, DB
通讯作者:
RUBIN, DB
DOI:
--
发表时间:
2004-12
期刊:
--
影响因子:
--
作者:
D. Wipf;B. Rao
通讯作者:
D. Wipf;B. Rao
影响因子:
1.3
作者:
V. Churchill;Richard Archibald;Anne Gelb
通讯作者:
Anne Gelb
影响因子:
1.2
作者:
E. Tadmor;Jing Zou
通讯作者:
Jing Zou
影响因子:
2.5
作者:
A. Viswanathan;Anne Gelb;D. Cochran
通讯作者:
D. Cochran