Content adaptive prediction unit size decision algorithm for HEVC intra coding

Guifen Tian, Satoshi Goto

研究成果: Conference contribution

87 被引用数 (Scopus)

抄録

The quadtree based picture partition scheme in HEVC contributes to significant coding efficiency improvement, especially for high resolution videos. But encoding complexity also increases dramatically. This paper brings forward a two-stage prediction unit size decision algorithm to speed up the original intra coding in HEVC. In the pre-stage, texture complexity of down-sampled largest coding unit (LCU) and its four sub-blocks are analyzed according to video content, to filter out unnecessary prediction units for both the LCU and its sub-blocks. Secondly, during intra coding, prediction unit sizes of encoded neighboring blocks are utilized to skip small prediction unit candidates for current block. Experimental results show that proposed algorithm can speed up original HEVC intra coding by a factor of up to 73.7% and by averagely 44.91% for 4k2k video sequences. Meanwhile, the peak signal-to-noise ratio degradation is less than 0.04dB and bit-rate stays almost the same compared with that of original HEVC intra coding.

本文言語English
ホスト出版物のタイトル2012 Picture Coding Symposium, PCS 2012, Proceedings
ページ405-408
ページ数4
DOI
出版ステータスPublished - 2012
イベント29th Picture Coding Symposium, PCS 2012 - Krakow
継続期間: 2012 5 72012 5 9

Other

Other29th Picture Coding Symposium, PCS 2012
CityKrakow
Period12/5/712/5/9

ASJC Scopus subject areas

  • コンピュータ ビジョンおよびパターン認識

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