J4

• 计算机科学 • 上一篇    下一篇

基于AOS方法的非线性总变差去噪模型

赵树峰1,2, 罗宏文1, 黄承奇1, 马驷良1   

  1. 1. 吉林大学 数学研究所, 长春 130012; 2. 东北师范大学 附属中学, 长春 130021
  • 收稿日期:2008-01-30 修回日期:1900-01-01 出版日期:2008-09-26 发布日期:2008-09-26
  • 通讯作者: 罗宏文

Nonlinear Totalvariation Denoising Model Based on AOS Method

ZHAO Shufeng1,2, LUO Hongwen1, HUANG Chengqi1, MA Si liang1   

  1. 1. Institute of Mathematics, Jilin University, Changchun 130012, China;2. High Shool Attached to Northeast Normal University, Changchun 130021, China
  • Received:2008-01-30 Revised:1900-01-01 Online:2008-09-26 Published:2008-09-26
  • Contact: LUO Hongwen

摘要: 利用加性算子分裂(AOS)方法对非线性总变差图像去噪 模型(ROF模型)进行数值离散, 该数值格式为半隐格式, 克服了显格式对时间步长的限制,为无条件稳定的, 可以实现并行计算, 加快了收敛速度. 实验结果表明, 该方法比显格式具有更大的优越性.

关键词: 图像去噪, 非线性总变差模型, 加性算子分裂

Abstract: An addtive operator splitting (AOS) method is employed in the nonlinear total variation model (ROF model) for image denoising. The numerical discretization scheme is semiimplicit and unconditional stable. It overcomes the time step size restriction for explicit scheme. The method can easily be parallelized and one can gain an accelerated convergence. The experiments show that it is extremely promising compared to the explicit scheme.

Key words: image denoising, nonlinear total variation model, additive operator splitting

中图分类号: 

  • TP391.41