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http://dx.doi.org/10.5909/JBE.2015.20.5.78

Adaptive Residual DPCM using Weighted Linear Combination of Adjacent Residues in Screen Content Video Coding  

Kang, Je-Won (Ewha W. University)
Publication Information
Journal of Broadcast Engineering / v.20, no.5, 2015 , pp. 782-785 More about this Journal
Abstract
In this paper, we propose a novel residual differential pulse-code modulation (RDPCM) coding technique to improve coding efficiency of screen content videos. The proposed method uses a weighted combination of adjacent residues to provide an accurate estimate in RDPCM. The weights are trained in previously coded samples by using an L1 optimization problem with the least absolute shrinkage and selection operation (LASSO). The proposed method achieves BD-rate saving about 3.1% in all-intra coding.
Keywords
HEVC; screen content video coding; RDPCM;
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