抄録
High efficiency video coding (HEVC) is the most recent video compression standard that doubled the coding efficiency as compared to the predecessor H.264/AVC. HEVC adopts sample adaptive offset (SAO) right after deblock filtering process. According to the intensity and the edge property, the encoder classifies the reconstructed pixels into different categories, and assigns one offset for each category of pixels. This paper proposes class combination, pre-decision and merge separation to decrease the sao processing time. Class combination combines the four edge offset (EO) type into one. Pre-decision decreases the band offset (BO) search time from 29 to 4. Merge separation limits the merge range to saving the efficiency loss. Experimental result shows the proposed methods can saving about 38% SAO processing time with little degradation (BD-bitrate increased by 0.16% and ΔPSNR decreased by 0.001) in terms of coding gain.
本文言語 | English |
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ホスト出版物のタイトル | International Conference on Digital Signal Processing, DSP |
出版社 | Institute of Electrical and Electronics Engineers Inc. |
ページ | 259-262 |
ページ数 | 4 |
巻 | 2014-January |
ISBN(印刷版) | 9781479946129 |
DOI | |
出版ステータス | Published - 2014 |
イベント | 2014 19th International Conference on Digital Signal Processing, DSP 2014 - Hong Kong, Hong Kong 継続期間: 2014 8月 20 → 2014 8月 23 |
Other
Other | 2014 19th International Conference on Digital Signal Processing, DSP 2014 |
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国/地域 | Hong Kong |
City | Hong Kong |
Period | 14/8/20 → 14/8/23 |
ASJC Scopus subject areas
- 信号処理