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Sparse representation for restoring images by exploiting topological structure of graph of patches
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Jingjing Deng,
Zengfa Dou ,
Xiaoke Ma
IET Image Processing, Volume: 19, Issue: 1
Swansea University Author:
Xianghua Xie
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DOI (Published version): 10.1049/ipr2.70004
Abstract
Image restoration poses a significant challenge, aiming to accurately recover damaged images by delving into their inherent characteristics. Various models and algorithms have been explored by researchers to address different types of image distortions, including sparse representation, grouped spars...
| Published in: | IET Image Processing |
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| ISSN: | 1751-9659 1751-9667 |
| Published: |
Institution of Engineering and Technology (IET)
2025
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| Online Access: |
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa68733 |
| Abstract: |
Image restoration poses a significant challenge, aiming to accurately recover damaged images by delving into their inherent characteristics. Various models and algorithms have been explored by researchers to address different types of image distortions, including sparse representation, grouped sparse representation, and low-rank self-representation. The grouped sparse representation algorithm leverages the prior knowledge of non-local self-similarity and imposes sparsity constraints to maintaintexture information within images. To further exploit the intrinsic properties of images, this study proposes a novel low-rank- representation-guided grouped sparse representation image restoration algorithm. This algorithm integrates self-representation models and trace optimization techniques to effectively preserve the original image structure, thereby enhancing image restoration performance while retaining the original texture and structural information. We evaluate the proposed method on image denoising and deblocking tasks across several datasets, demonstrating promising results. |
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| Keywords: |
image representation; image restoration |
| College: |
Faculty of Science and Engineering |
| Funders: |
Shaanxi Key Research and Development Program. Grant Number: 2021ZDLGY02-02 |
| Issue: |
1 |