摘要
针对图像恢复的全变差(TV)模型提出了一种基于交替方向乘子法的快速求解算法。通过变量替换将TV模型转化为与之完全等价的等式约束优化问题,然后用交替方向乘子法求解等式约束优化问题。实验结果表明,相对于FTVd方法,克服了FTVd方法的不稳定性,视觉效果更好,信噪比也得到了提高。
An alternating direction method of multipliers based fast algorithm for total variation image restoration is presented.TV model is reformulated equivalently as an equality-constrainted program by variable substitution.Then the corresponding equality-constrainted program is solved by alternating direction method of multipliers.Experimental results demonstrate the effectiveness both in the SNR value and the visual effect,compared with FTVd method.
出处
《计算机工程与应用》
CSCD
北大核心
2010年第14期8-11,30,共5页
Computer Engineering and Applications
基金
国家高技术研究发展计划(863)No.2007AA12Z142
国家自然科学基金No.60802039
No.60672074
高等院校博士学科点专项科研基金No.20070288050~~
关键词
图像恢复
全变差
快速傅里叶变换
image restoration
total variation
fast Fourier transform
