Image restoration using total variation with overlapping group sparsity

Jun Liu, Ting Zhu Huang, Ivan W. Selesnick, Xiao Guang Lv, Po Yu Chen

Research output: Contribution to journalArticle

Abstract

Image restoration is one of the most fundamental issues in imaging science. Total variation regularization is widely used in image restoration problems for its capability to preserve edges. In the literature, however, it is also well known for producing staircase artifacts. In this work we extend the total variation with overlapping group sparsity, which we previously developed for one dimension signal processing, to image restoration. A convex cost function is given and an efficient algorithm is proposed for solving the corresponding minimization problem. In the experiments, we compare our method with several state-of-the-art methods. The results illustrate the efficiency and effectiveness of the proposed method in terms of PSNR and computing time.

Original languageEnglish (US)
Pages (from-to)232-246
Number of pages15
JournalInformation Sciences
Volume295
DOIs
StatePublished - Feb 20 2015

Keywords

  • ADMM
  • Convex optimization
  • Image restoration
  • MM
  • Overlapping group sparsity
  • Total variation

ASJC Scopus subject areas

  • Software
  • Control and Systems Engineering
  • Theoretical Computer Science
  • Computer Science Applications
  • Information Systems and Management
  • Artificial Intelligence

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