Study on the coding efficiency impacts using larger intra prediction unit size than HEVC

T. Tsukuba, Tomohiro Ikai
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引用次数: 0

Abstract

This paper presents the coding efficiency impacts using larger intra prediction unit size (PU extension) than HEVC, which is implemented on the HEVC reference software HM-16.4. It is reported that the PU extension up to 128×128 can achieve 0.07 % and 0.19 % on average for normal QPs (QP=22, 27, 32, 37) and high QPs (QP=32, 37, 42, 47) respectively in all intra configuration. The amount of gain by 128×128 Intra PU extension is roughly as half as that of 64×64 Intra PU of 0.18 % and 0.45 % for normal QPs and High QPs. For further study, the number of prediction mode increase, efficient prediction mode signalling and transform size extension should be studied.
研究使用比HEVC更大的帧内预测单元对编码效率的影响
本文通过在HEVC参考软件HM-16.4上实现比HEVC更大的帧内预测单元(PU扩展)对编码效率的影响。据报道,在所有intra配置中,正常QPs (QP=22、27、32、37)和高QPs (QP=32、37、42、47)的PU延伸率平均分别达到0.07%和0.19%,最高可达128×128。对于正常qp和高qp, 128×128 Intra PU扩展的增益量大约是64×64 Intra PU的一半,分别为0.18%和0.45%。为了进一步研究,需要研究增加预测模式的数量、有效的预测模式信令和变换大小的扩展。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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