Error concealment for 3-D DWT based video codec using iterative thresholding |
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Author: | Belyaev, Evgeny1; Forchhammer, Søren1; Codreanu, Marian2 |
Organizations: |
1Department of Photonics Engineering, Technical University of Denmark, 2800 Lyngby, Denmark 2Centre for Wireless Communications, University of Oulu, 90014 Oulu, Finland |
Format: | article |
Version: | accepted version |
Access: | open |
Online Access: | PDF Full Text (PDF, 0.5 MB) |
Persistent link: | http://urn.fi/urn:nbn:fi-fe2018080233262 |
Language: | English |
Published: |
Institute of Electrical and Electronics Engineers,
2017
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Publish Date: | 2018-08-02 |
Description: |
AbstractError concealment for video coding based on a 3-D discrete wavelet transform (DWT) is considered. We assume that the video sequence has a sparse representation in a known basis different from the DWT, e.g., in a 2-D discrete cosine transform basis. Then, we formulate the concealment problem as l 1 -norm minimization and solve it utilizing an iterative thresholding algorithm. Comparing different thresholding operators, we show that video block-matching and 3-D filtering provide the best reconstruction by utilizing spatial similarity within a frame and temporal similarity between neighbor frames. Experimental results show that the proposed error concealment provides up to 6-dB improvement in the peak signal-to-noise ratio in comparison with existing recovery methods. see all
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Series: |
IEEE communications letters |
ISSN: | 1089-7798 |
ISSN-E: | 2373-7891 |
ISSN-L: | 1089-7798 |
Volume: | 21 |
Issue: | 8 |
Pages: | 1731 - 1734 |
DOI: | 10.1109/LCOMM.2017.2697428 |
OADOI: | https://oadoi.org/10.1109/LCOMM.2017.2697428 |
Type of Publication: |
A1 Journal article – refereed |
Field of Science: |
222 Other engineering and technologies |
Subjects: | |
Copyright information: |
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