张凯 李敏
摘 要: 图像去模糊一直是图像修复中的重要问题,针对经典的去模糊方法,提出一种耦合非凸[lp(0≤p<1)]范数和G范数的图像去模糊方法。该方法利用[lp(0≤p<1)]范数作为正则项约束,保证了图像的稀疏性要求;利用G范数作为保真项,保证在去模糊的同时有效抑制噪声并保持图像的细小特征,同时也给出新方法基于交替最小化的有效算法。实验结果表明新模型是可行的。
关键词: 图像去模糊; [lp(0≤p<1)]范数; G范数; 交替最小化
中图分类号: TN911.73?34 文献标识码: A 文章编号: 1004?373X(2016)05?0085?04
3 结 语
针对经典的正则化去模糊方法,本文采用非凸[lp(0≤p<1)]范数作为正则项来保证图像的稀疏性。同时选取G范数来刻画噪声成分,使得复原后的图像含有较少的噪声。对于耦合非凸[lp(0≤p<1)]范数和[G]范数的变分问题,本文给出基于交替最小化迭代的算法。数值实验表明新算法是有效的。
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