面向高效率视频编码标准的快速码率控制算法

doi:10.3724/SP.J.1087.2013.01251

计算机应用 ›› 2013, Vol. 33 ›› Issue (05): 1251-1254.DOI: 10.3724/SP.J.1087.2013.01251

面向高效率视频编码标准的快速码率控制算法

吴敏,公衍超,杨楷芳

西北工业大学电子信息学院，西安 710129

收稿日期:2012-11-01 修回日期:2012-12-11 出版日期:2013-05-01 发布日期:2013-05-08
通讯作者: 吴敏
作者简介:吴敏(1990-)，女，陕西西安人，硕士研究生，主要研究方向：视频编码、码率控制；公衍超(1986-)，男，山东临沂人，博士研究生，主要研究方向：视频编码；杨楷芳(1987-)，女，山西阳泉人，博士研究生，主要研究方向：视频编码
基金资助:
教育部博士点基金资助项目(20096102120032);西北工业大学研究生创业种子基金资助项目(z2012093)

Fast rate control algorithm for high efficiency video coding

Wu Min¹,GONG Yanchao²,YANG Kaifang²

1. School of Electronics and Information, Northwestern Polytechnical University, Xi'an Shaanxi 710129, China
2. Northwestern Polytechnical University, Xi'an Shaanxi 710129, China

Received:2012-11-01 Revised:2012-12-11 Online:2013-05-08 Published:2013-05-01
Contact: Wu Min
Supported by:
;the graduate starting seed fund of Northwestern Polytechnical University

摘要/Abstract

摘要： 在详细分析高效率视频编码标准HEVC现有码率控制算法JCTVC-H0213的基础上，提出了一种快速有效的改进算法。该算法根据前一帧的目标比特和实际比特的比值来确定当前帧量化参数。在恒定比特率情况下将该算法与JCTVC-H0213进行比较，实验结果表明该算法对于大部分内容特性序列峰值信噪比变化值提高2.4dB以上，达到了很好的码率控制效果；并且该算法非常简单，适用于实时的码率控制应用。

关键词: 高效率视频编码, 码率控制, 目标比特, 实时应用, HM6.3

Abstract: By analyzing the current rate control algorithm, i.e., JCTVC-H0213 for high efficiency video coding, a new fast and effective method to derive the quantization parameter was proposed, relying on the ratio of the targeted bitrate to the actual coding bitrate of the previous frame. The proposed algorithm was implemented on the HM6.3 platform in the constant bit rate case. The experimental results show that the proposed algorithm outperforms JCTVC-H0213 rate control algorithm. A performance gain in variety of Peak Signal-to-Noise Ratio (PSNR) of more than 2.4 dB can be observed. In conclusion, the proposed algorithm achieves outstanding rate distortion performance with a low complexity, which makes it well suited to real-time scenarios.

Key words: high efficiency video coding, rate control, targeted bitrate, real-time application, HM6.3

中图分类号:

TP37

吴敏公衍超杨楷芳. 面向高效率视频编码标准的快速码率控制算法[J]. 计算机应用, 2013, 33(05): 1251-1254.

Wu Min GONG Yanchao YANG Kaifang. Fast rate control algorithm for high efficiency video coding[J]. Journal of Computer Applications, 2013, 33(05): 1251-1254.

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面向高效率视频编码标准的快速码率控制算法

Fast rate control algorithm for high efficiency video coding

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