Title
A Coupled Variational System for Image Decomposition along with Edges Detection
Abstract
In order to better decompose the images and protect their edges, in this paper, we proposed a coupled variational system consisting of two steps. The first step, an improved weighted variational model is introduced to obtain the cartoon and texture. Using the obtained cartoon image, in the second step, a new vector function is obtained for describing the pseudo edge of the considered image by one Tikhonov regularization variational model. Because Tikhonov regularization model is equivalent to carrying out a Gaussian linear filtering, the obtained vector function is smoother. To solve the coupled system, we give the alternating direction method, primal-dual method and Gauss-Seidel iteration. Using the coupled system, we can not only separate out the cartoon and texture parts, but also extract the edge. Extensive numerical experiments are given to show the effectiveness of the proposed method compared with other variational methods.
Year
DOI
Venue
2022
10.3390/a15080288
ALGORITHMS
Keywords
DocType
Volume
image decomposition, image restoration, total variation, texture, cartoon
Journal
15
Issue
ISSN
Citations 
8
1999-4893
0
PageRank 
References 
Authors
0.34
0
4
Name
Order
Citations
PageRank
Jianlou Xu100.34
Yuying Guo200.34
Yan Hao300.34
Leigang Huo400.34