University of Oulu

E. Belyaev, S. Forchhammer and M. Codreanu, "Error Concealment for 3-D DWT Based Video Codec Using Iterative Thresholding," in IEEE Communications Letters, vol. 21, no. 8, pp. 1731-1734, Aug. 2017. doi: 10.1109/LCOMM.2017.2697428

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)
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Language: English
Published: Institute of Electrical and Electronics Engineers, 2017
Publish Date: 2018-08-02


Error 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.

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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
Type of Publication: A1 Journal article – refereed
Field of Science: 222 Other engineering and technologies
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