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Sparsity-based image error concealment via adaptive dual dictionary learning and regularization
Liu X.1; Zhai D.1; Zhou J.3; Wang S.2; Zhao D.1; Gao H.1
2017-02-01
Source PublicationIEEE Transactions on Image Processing
ISSN10577149
Volume26Issue:2Pages:782-796
Abstract

In this paper, we propose a novel sparsity-based image error concealment (EC) algorithm through adaptive dual dictionary learning and regularization. We define two feature spaces: The observed space and the latent space, corresponding to the available regions and the missing regions of image under test, respectively. We learn adaptive and complete dictionaries individually for each space, where the training data are collected via an adaptive template matching mechanism. Based on the piecewise stationarity of natural images, a local correlation model is learned to bridge the sparse representations of the aforementioned dual spaces, allowing us to transfer the knowledge of the available regions to the missing regions for EC purpose. Eventually, the EC task is formulated as a unified optimization problem, where the sparsity of both spaces and the learned correlation model are incorporated. Experimental results show that the proposed method outperforms the state-of-the-art techniques in terms of both objective and perceptual metrics.

KeywordDual Dictionary Learning Image Error Concealment Kernel Ridge Regression Sparse Coding
DOI10.1109/TIP.2016.2623481
URLView the original
Indexed BySCI
Language英语
WOS Research AreaComputer Science ; Engineering
WOS SubjectComputer Science, Artificial Intelligence ; Engineering, Electrical & Electronic
WOS IDWOS:000404773100014
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Citation statistics
Cited Times [WOS]:10   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionDEPARTMENT OF COMPUTER AND INFORMATION SCIENCE
Affiliation1.Harbin Institute of Technology
2.Nanyang Technological University
3.Universidade de Macau
Recommended Citation
GB/T 7714
Liu X.,Zhai D.,Zhou J.,et al. Sparsity-based image error concealment via adaptive dual dictionary learning and regularization[J]. IEEE Transactions on Image Processing,2017,26(2):782-796.
APA Liu X.,Zhai D.,Zhou J.,Wang S.,Zhao D.,&Gao H..(2017).Sparsity-based image error concealment via adaptive dual dictionary learning and regularization.IEEE Transactions on Image Processing,26(2),782-796.
MLA Liu X.,et al."Sparsity-based image error concealment via adaptive dual dictionary learning and regularization".IEEE Transactions on Image Processing 26.2(2017):782-796.
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