A Weighted Two-Level Bregman Method with Dictionary Updating for Nonconvex MR Image Reconstruction

Nonconvex optimization has shown that it needs substantially fewer measurements than l (1) minimization for exact recovery under fixed transform/overcomplete dictionary. In this work, two efficient numerical algorithms which are unified by the method named weighted two-level Bregman method with dict...

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Detalles Bibliográficos
Autores principales: Liu, Qiegen, Peng, Xi, Liu, Jianbo, Yang, Dingcheng, Liang, Dong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Hindawi Publishing Corporation 2014
Materias:
Research Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4241317/
https://www.ncbi.nlm.nih.gov/pubmed/25431583
http://dx.doi.org/10.1155/2014/128596

Internet

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4241317/
https://www.ncbi.nlm.nih.gov/pubmed/25431583
http://dx.doi.org/10.1155/2014/128596

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