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Multimedia Tools and Applications

, Volume 77, Issue 17, pp 22841–22855 | Cite as

Image Recovery based on Local and Nonlocal Regularizations

  • Jun Zhu
  • Changwei Chen
Article

Abstract

Recently, a nonlocal low-rank regularization based compressive sensing approach (NLR) which exploits structured sparsity of similar patches has shown the state-of-the-art performance in image recovery. However, NLR cannot efficiently preserve local structures because it ignores the relationship between pixels. In addition, the surrogate logdet function used in NLR cannot well approximate the rank. In this paper, a novel approach based on local and nonlocal regularizations toward exploiting the sparse-gradient property and nonlocal low-rank property (SGLR) has been proposed. Weighted schatten-p norm and lq norm have been used as better non-convex surrogate functions for the rank and l0 norm. In addition, an efficient iterative algorithm is developed to solve the resulting recovery problem. The experimental results have demonstrated that SGLR outperforms existing state-of-the-art CS algorithms.

Keywords

Compressive sensing Nonlocal low-rank regularization Total variation Weighted schatten-p norm Alternating direction methods of multipliers 

Notes

Acknowledgments

This work was supported by the Natural Science Fund for Colleges and Universities in Jiangsu Province (Grant No. 16KJB520014), the Doctor Initial Captional of Jinling Institute of Technology Nanjing (No. jit-b-201508), the Scientific Research Starting Foundation of Jinling Institute of Technology for Introducing Talents (No. jit-rcyj-201505), and sponsored by the Jiangsu Key Laboratory of Image and Video Understanding for Social Safety (Nanjing University of Science and Technology) (Grant No. 30916014107).

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  1. 1.School of Computer EngineeringJinling Institute of TechnologyNanjingChina
  2. 2.College of Computer and Information EngineeringNanjing Xiaozhuang UniversityNanjingChina

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