Fast Linearized Augmented Lagrangian Method for Euler’s Elastica Model
Fast Linearized Augmented Lagrangian Method for Euler’s Elastica Model
复制标题
欧拉 Elastica 模型的快速线性化增广拉格朗日方法
DOI:
10.4208/nmtma.2017.m1611
复制
发表时间:
2017-02
期刊:
影响因子:
--
通讯作者:
张俊
中科院分区:
文献类型:
--
作者:
张俊
Recently, many variational models involving high order derivatives have been widely used in image processing, because they can reduce staircase effects during noise elimination. However, it is very challenging to construct efficient algo-rithms to obtain the minimizers of original high order functionals. In this paper, we propose a new linearized augmented Lagrangian method for Euler’s elastica image denoising model. We detail the procedures of finding the saddle-points of the aug-mented Lagrangian functional. Instead of solving associated linear systems by FFT or linear iterative methods (e.g., the Gauss-Seidel method), we adopt a linearized strat-egy to get an iteration sequence so as to reduce computational cost. In addition, we give some simple complexity analysis for the proposed method. Experimental results with comparison to the previous method are supplied to demonstrate the efficiency of the proposed method, and indicate that such a linearized augmented Lagrangian method is more suitable to deal with large-sized images.
登录
查看更多内容
影响因子:
2
作者:
J. Koko;Stéphanie Jehan-Besson-
通讯作者:
J. Koko;Stéphanie Jehan-Besson-
影响因子:
2
作者:
A. Chambolle
通讯作者:
A. Chambolle
DOI:
10.1137/s0036139901390088
发表时间:
2003
期刊:
SIAM J. Appl. Math.
影响因子:
--
作者:
Jianhong Shen;S. Kang;T. Chan
通讯作者:
Jianhong Shen;S. Kang;T. Chan
影响因子:
44.1
作者:
X. Tai;Chunlin Wu
通讯作者:
X. Tai;Chunlin Wu
影响因子:
19.5
作者:
J. Hahn;X. Tai;S. Borok;A. Bruckstein
通讯作者:
J. Hahn;X. Tai;S. Borok;A. Bruckstein