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一种基于变换系数拉普拉斯分布的HEVC码率控制算法
  • ISSN号：1007-2861
  • 期刊名称：《上海大学学报：自然科学版》
  • 时间：0
  • 分类：TU411[建筑科学—岩土工程;建筑科学—土工工程]
  • 作者机构：[1]北京大学数字媒体所,北京100871
  • 相关基金：国家自然科学基金资助项目（61121002,61103088）; 国家高技术研究发展计划（863计划）资助项目（2012AA011505）; 国家科技支撑计划重点资助项目（201 1BAH08B01）
作者： 司俊俊[1], 马思伟[1], 王诗淇[1], 高文[1]
关键词： 高效视频编码, 码率控制, 拉普拉斯分布, high efficiency video coding（HEVC）, rate control, Laplace distribution
中文摘要：

基于变换后残差信号的拉普拉斯分布特性,提出了一种面向高效视频编码（high efficiency video coding,HEVC）的编码树单元（coding tree unit,CTU）级码率控制算法.首先,研究了量化参数、拉普拉斯分布参数以及拉格朗日乘数之间的关系,并建立了模型.然后,根据每个CTU的变换残差的拉普拉斯分布特性动态调整其量化参数,以获取高效的编码性能.此外,通过与帧级码率控制算法相结合,获得了更加精确的码率控制效果以及良好的编码性能.实验结果表明,所提出的码率控制算法可以获得比HEVC标准提案JCTVC-H0213和JCTVC-K0103中所述码率控制算法更优的编码性能.

英文摘要：

This paper proposes a rate control scheme on the level of coding tree unit（CTU） based on the Laplace distribution modeling of the transformed residuals for high efficiency video coding（HEVC）.At first the relationship between the optimal quantization parameter,the Laplace parameter and the Lagrange multiplier is established.Based on this relationship,the quantization parameter for each CTU is dynamically adjusted according to its distribution properties of the transformed residual to achieve high coding performance.Moreover, this paper incorporates this scheme within a rate control algorithm on the frame level to produce accurate rate control as well as high coding performance.Experimental results show that the proposed rate control scheme achieves accurate control as well as better coding performance than both the rate control schemes in the HEVC proposals JCTVC-H0213 and JCTVC-K0103.

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期刊信息
  • 《上海大学学报：自然科学版》
  • 中国科技核心期刊
  • 主管单位:上海市教育委员会
  • 主办单位:上海大学
  • 主编：孙晋良
  • 地址：上海市宝山区上大路99号126信箱
  • 邮编：200444
  • 邮箱：xuebao@mail.shu.edu.cn
  • 电话：021-66135508
  • 国际标准刊号：ISSN：1007-2861
  • 国内统一刊号：ISSN：31-1718/N
  • 邮发代号:
  • 获奖情况:
  • 1996年获得第二届上海市优秀科技期刊二等奖,1999年获得上海市高等学校优秀自然科学学报二等奖,1999年获得全国优秀高校自然科学学报及教育部优秀...,2000年获得《CAJ-CD规范》执行优秀奖,2004年获得全国高校优秀科技期刊二等奖,2004年和2006年获上海市科技期刊编校质量优秀奖
  • 国内外数据库收录:
  • 俄罗斯文摘杂志,美国化学文摘（网络版）,美国数学评论（网络版）,德国数学文摘,美国剑桥科学文摘,中国中国科技核心期刊,中国北大核心期刊（2004版）,中国北大核心期刊（2008版）,中国北大核心期刊（2011版）,中国北大核心期刊（2014版）
  • 被引量:6234