Hardware oriented category pre-determination algorithm for SAO in HEVC

Gaoxing Chen; Zhenyu Pei; Zhenyu Liu; Takeshi Ikenaga

doi:10.1109/APSIPA.2014.7041582

Hardware oriented category pre-determination algorithm for SAO in HEVC

Gaoxing Chen, Zhenyu Pei, Zhenyu Liu, Takeshi Ikenaga

Graduate School of Information, Production and Systems

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

High efficiency video coding (HEVC) is a video compression standard that outperforms the predecessor H.264/AVC by doubling the compression efficiency. To enhance the coding accuracy, HEVC adopts sample adaptive offset (SAO) which classifies reconstructed pixels into different categories. During the pixel classification, however, SAO cannot use the raw samples in the current code-tree-block (CTB) boundary 4 × 4-blocks because these pixels need to be processed by deblocking filter first, which poses the problem for hardware design. This paper proposes hardware oriented category pre-determination algorithm which estimates the deblocking strengthens on CTB boundaries and selects the promising samples in these areas during SAO classification. Compared with HEVC test mode (HM12.0), experiment results illustrate that the proposed method achieves the average 0.1% BD-bitrate (BDBR) reduction, or equivalently 0.008 db PSNR increasing.

Original language	English
Title of host publication	2014 Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA 2014
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Print)	9786163618238
DOIs	https://doi.org/10.1109/APSIPA.2014.7041582
Publication status	Published - 2014 Feb 12
Event	2014 Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA 2014 - Chiang Mai, Thailand Duration: 2014 Dec 9 → 2014 Dec 12

Other

Other	2014 Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA 2014
Country/Territory	Thailand
City	Chiang Mai
Period	14/12/9 → 14/12/12

ASJC Scopus subject areas

Signal Processing
Information Systems

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10.1109/APSIPA.2014.7041582

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Hardware oriented category pre-determination algorithm for SAO in HEVC. / Chen, Gaoxing; Pei, Zhenyu; Liu, Zhenyu et al.
2014 Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA 2014. Institute of Electrical and Electronics Engineers Inc., 2014. 7041582.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Chen, G, Pei, Z, Liu, Z & Ikenaga, T 2014, Hardware oriented category pre-determination algorithm for SAO in HEVC. in 2014 Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA 2014., 7041582, Institute of Electrical and Electronics Engineers Inc., 2014 Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA 2014, Chiang Mai, Thailand, 14/12/9. https://doi.org/10.1109/APSIPA.2014.7041582

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Hardware oriented category pre-determination algorithm for SAO in HEVC

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