2012
DOI: 10.1109/tip.2011.2160072
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Nonparametric Bayesian Dictionary Learning for Analysis of Noisy and Incomplete Images

Abstract: Nonparametric Bayesian methods are considered for recovery of imagery based upon compressive, incomplete, and/or noisy measurements. A truncated beta-Bernoulli process is employed to infer an appropriate dictionary for the data under test and also for image recovery. In the context of compressive sensing, significant improvements in image recovery are manifested using learned dictionaries, relative to using standard orthonormal image expansions. The compressive-measurement projections are also optimized for th… Show more

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Cited by 314 publications
(37 citation statements)
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References 36 publications
(86 reference statements)
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“…The beta-Bernoulli process provides a convenient prior for the sparse coefficients [20][21][22][23]. The process meaning distribution over distribution is a combination of a Beta distribution and a Bernoulli one.…”
Section: Sparse Prior Factormentioning
confidence: 99%
See 1 more Smart Citation
“…The beta-Bernoulli process provides a convenient prior for the sparse coefficients [20][21][22][23]. The process meaning distribution over distribution is a combination of a Beta distribution and a Bernoulli one.…”
Section: Sparse Prior Factormentioning
confidence: 99%
“…The impact of the parameters above on the model are expatiated in [23], without restatementation here. Note that the product signation n means that each component of Z i and Jr is drawn from i. i. d (independently identically distributed).…”
Section: Sparse Prior Factormentioning
confidence: 99%
“…Image restoration is an important and widely studied subject in image processing, where the main objective is to reconstruct the latent image given the degraded and/or noisy image [1][2][3][4][5]. The main detrimental factors to corrupt the image are noise, data missing, and blur, to name a few.…”
Section: Introductionmentioning
confidence: 99%
“…Two patches are viewed the same or called rotationally invariant, if they are the same up to rotation. While the patch space model and diffusion-based algorithms have been successfully applied to different fields, such as the inpainting problem [22][23][24][25] and the medical imaging problem [19,26,27], however, to the best of our knowledge, a companion theoretical study is lacking. It is not clear how we could correctly find the neighbors when noise exists, and why the patch size should be neither too big nor too small and thus why patch space approaches are better than pixel-based ones.…”
Section: Introductionmentioning
confidence: 99%