Dictionaries Construction Using Alternating Projection Method in Compressive Sensing
Dictionaries Construction Using Alternating Projection Method in Compressive Sensing
复制标题
压缩感知中使用交替投影法构建字典
DOI:
10.1109/lsp.2011.2168517
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发表时间:
2011-09
影响因子:
3.9
通讯作者:
Li Jia
中科院分区:
文献类型:
--
作者:
Li Bo;Shen Yi;Li Jia
This letter introduces a novel algorithm to construct sensing and measurement dictionaries in compressive sensing using alternating projection method. The cumulative and mutual cross coherence of the constructed dictionaries are lower than those of Gaussian random dictionary. The concept of General Restricted Isometry Constant (GRIC) is introduced. Low cumulative cross coherence puts bound on GRIC and small GRIC improves successful recovery rate of OMP algorithm. Experiments demonstrate that OMP algorithm performs better using dictionaries constructed by the proposed algorithm than Gaussian random dictionaries and those constructed by Schnass' algorithm.
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DOI:
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期刊:
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