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This paper presents a fast sample adaptive offset (SAO) encoding algorithm in High Efficiency Video Coding (HEVC). The key idea of a proposed method is to simplify decision of the best SAO edge offset class by exploiting intra prediction mode information instead of exhaustive RD cost calculation for all classes. The proposed method reduces SAO encoding time about 77.3% only with 0.8% BD-rate degradation...
In HEVC, the effect of the RDO on compression efficiency increases while its computational complexity accounts for an important part of the computation burden. For H.264/AVC, zero block (ZB) detection has been used as an efficient scheme to reduce the complexity of RDO operations. For HEVC, ZB detection is different from the scheme for H.264/AVC because HEVC requires large transform sizes, 16...
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