A high parallel way for processing IQ/IT part of HEVC decoder based on GPU

Lang Ping He, Satoshi Goto

研究成果: Conference contribution

5 被引用数 (Scopus)

抄録

HEVC (High Efficiency Video Coding) is the newest video compression standard. Compared with the previous standards, the Coding efficiency is greatly improved at the cost of much higher codec complexity. So, many people improve the HEVC algorithm from the hardware level and software level. For the IQ/IT (inverse quantization/inverse transform) part, HEVC just processes one TU block one by one. And TU block size can be 4×4, 8×8, 16×16 and 32×32. So, it costs much decoding time by using this processing. In this paper, we present a parallel way for processing IQ/IT part based on GPU. In HEVC decoder, CABAC decoder only decodes one 64×64 size CTU block's parameters and some syntax elements. So, for now, we can process one 64×64 size Luma block and two 32×32 size Chroma block parallelly by using GPU. And from the experiment results, we can see the computation speed of computing the IQ/IT is about 33 times faster than the HM 12.0's. And finally, we can reduce about 40.7% decoding time compared with HM 12.0's.

本文言語English
ホスト出版物のタイトル2014 International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2014
出版社Institute of Electrical and Electronics Engineers Inc.
ページ211-215
ページ数5
ISBN(印刷版)9781479961207
DOI
出版ステータスPublished - 2015 1 27
イベント2014 International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2014 - Kuching, Sarawak
継続期間: 2014 12 12014 12 4

Other

Other2014 International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2014
CityKuching, Sarawak
Period14/12/114/12/4

ASJC Scopus subject areas

  • 人工知能
  • コンピュータ ネットワークおよび通信
  • 信号処理

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