Efficient Residual DPCM Using an l1 Robust Linear Prediction in Screen Content Video Coding

Je Won Kang, Su Kyung Ryu, Na Young Kim, Min Joo Kang

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

In this paper, a residual differential pulse code modulation (RDPCM) coding technique using a weighted linear combination of neighboring residual samples is proposed to provide coding efficiency in the screen content video coding. The RDPCM performs the sample-based prediction of residue to reduce spatial redundancies. The proposed method uses the l1 optimization in the weight derivation by considering the statistical characteristics of graphical components in videos in an intracoding. Specifically we use the least absolute shrinkage and selection operator to derive the weights because the solution is accurate in high variance residue. Furthermore, we enhance parallelism in a line processing by restricting the support to the row-wise prediction to above samples or the column-wise prediction to the left samples. The proposed method uses an explicit RDPCM scheme, so a coding mode determined by rate-distortion optimization is transmitted to a decoder. For coding the overhead, we develop a context design in CABAC based on correlation between an intraprediction direction and an RDPCM prediction mode. It is demonstrated with the experimental results that the proposed method provides a significant coding gain over the state-of-the-art reference codec for screen content video coding.

Original languageEnglish
Article number7523950
Pages (from-to)2054-2065
Number of pages12
JournalIEEE Transactions on Multimedia
Volume18
Issue number10
DOIs
StatePublished - Oct 2016

Bibliographical note

Publisher Copyright:
© 2016 IEEE.

Keywords

  • Screen content coding (SCC)
  • l1optimization lossy and lossless coding
  • machine learning
  • parallelism
  • residual differential pulse code modulation (RDPCM)

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