An optimization scheme for quadtree-structured prediction and residual encoding in HEVC

Guifen Tian, Satoshi Goto

研究成果: Conference contribution

5 被引用数 (Scopus)

抄録

In the High Efficiency Video Coding (HEVC), block sizes for hybrid-prediction and residual encoding are recursively selected by using a quadtree structure. This technique requires enormous computational complexity. Nevertheless, the exhaustive quadtree-based partition is not always necessary. This paper fully utilizes all-zero residual blocks to accelerate HEVC encoding process. A near-sufficient condition is derived to detect variable-sized all-zero blocks. For these blocks, DCT and quantization can be skipped. Moreover, a novel PU pruning technique based on allzero block is presented to constrain prediction units (PU) which have little contribution to RD performance. Experiments on a wide range of videos show that proposed scheme can reduce up to 73.42% and an average of 53.37% computational complexity for HEVC encoder with only trivial loss in PSNR and rate.

本文言語English
ホスト出版物のタイトルIEEE Asia-Pacific Conference on Circuits and Systems, Proceedings, APCCAS
ページ547-550
ページ数4
DOI
出版ステータスPublished - 2012
イベント2012 IEEE Asia Pacific Conference on Circuits and Systems, APCCAS 2012 - Kaohsiung
継続期間: 2012 12 22012 12 5

Other

Other2012 IEEE Asia Pacific Conference on Circuits and Systems, APCCAS 2012
CityKaohsiung
Period12/12/212/12/5

ASJC Scopus subject areas

  • 電子工学および電気工学

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