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학술지 Offset Compensation Method for Skip Mode in Hybrid Video Coding
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저자
정세윤, 박현욱
발행일
201410
출처
IEEE Transactions on Circuits and Systems for Video Technology, v.24 no.10, pp.1825-1831
ISSN
1051-8215
출판사
IEEE
DOI
https://dx.doi.org/10.1109/TCSVT.2014.2317883
협약과제
14MR2500, 클라우드 기반 대용량 실감미디어 제작 기술 개발, 최진수
초록
The skip mode has been adopted to reduce the bitrate in hybrid video coding such as H.264/MPEG-4 Advanced Video Coding (AVC). To improve the coding performance by reducing the dc distortion in the skip mode, we propose a skip with offset method, which uses offset compensation with the estimated offset only in the skip mode. In the proposed method, no flag bit is used for offset because incorrectly estimated offsets are mostly filtered out through the rate distortion mode decision. Only a semantic change is needed at the skip mode in the proposed method. The existing skip mode can therefore be easily replaced with the proposed method. The proposed method shows better coding performance than previous methods, including the weighted prediction method, in H.264/AVC. Furthermore, the proposed method shows a significant coding gain of -7.60% and -5.81% in its averaged bitrate differences compared, respectively, with baseline and high profiles of H.264/AVC at 720p high definition sequences.
키워드
hybrid video coding, offset, skip mode, Terms-H.264/Advanced Video Coding (AVC)
KSP 제안 키워드
Advanced video coding(AVC), Coding Gain, Coding performance, Compensation method, H.264/MPEG-4, High definition, Hybrid video coding, Mode decision, Prediction methods, Skip mode, offset compensation