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作者:

Zhang, Zhen (Zhang, Zhen.) | Shi, Yunhui (Shi, Yunhui.) (学者:施云惠) | Yin, Baocai (Yin, Baocai.) (学者:尹宝才)

收录:

CPCI-S

摘要:

Since Magnetic resonance(MR) Images commonly possess a blocky structure and have sparse representations under certain wavelet bases, total variation (TV) and wavelet domain '1 norm regularization are often enforced together (TV-wavelet method) to improve the recovery accuracy. However, this model ignores that a family of wavelet coefficients has a natural grouping of its components. In this paper, we propose a new TV-Group sparse model which combines TV and wavelet domain group sparse penalty. The corresponding algorithm based on composite splitting method is employed to approach this TV-Group sparse model. Experimental results show that our model can obviously improve both objective and subjective qualities of MR image recovery comparing with the TV wavelet model.

关键词:

compressive sensing group sparse MR image reconstruction total variation

作者机构:

  • [ 1 ] [Zhang, Zhen]Beijing Univ Technol, Coll Comp Sci & Technol, Beijing 100124, Peoples R China
  • [ 2 ] [Shi, Yunhui]Beijing Univ Technol, Coll Comp Sci & Technol, Beijing 100124, Peoples R China
  • [ 3 ] [Yin, Baocai]Beijing Univ Technol, Coll Comp Sci & Technol, Beijing 100124, Peoples R China

通讯作者信息:

  • [Zhang, Zhen]Beijing Univ Technol, Coll Comp Sci & Technol, Beijing 100124, Peoples R China

电子邮件地址:

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来源 :

2013 IEEE INTERNATIONAL CONFERENCE ON MULTIMEDIA AND EXPO (ICME 2013)

ISSN: 1945-7871

年份: 2013

语种: 英文

被引次数:

WoS核心集被引频次: 4

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ESI高被引论文在榜: 0 展开所有

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