Estimation of initial quantization parameters for H.264/AVC rate control

	Estimation of initial quantization parameters for H.264/AVC rate control
	Zhao C.-L.; Dai M.; Sun L.-N.; Sun L.; Sun C.-S.; Zhang J.; Feng L.
	2014
发表期刊	Guangxue Jingmi Gongcheng/Optics and Precision Engineering
ISSN	ISBN/1004924X
卷号	22 期号:9 页码:2553-2564
摘要	As the rate control model in H.264/AVC ignores the influence of video features on the selection of a Initial Quantization Parameter (QP0), this paper proposes a novel QP0 algorithm based on video features to improve the performance of H.264/AVC rate control. First, video features which have influence on the determination of QP0 were analyzed, such as (bit per pix, bpp), video complexities and length of Group of Picture (GOP). Then, functional relationships between QP0 and bpp, QP0 and video complexity were established through extensive simulation. Finally, considering the influence of the length of GOP on the QP0, the QP0 model was revised. Experimental results show that the proposed algorithm increases the average Peak Signal-to-Noise Ratio(PSNR) of reconstructed video by 0.185 dB for Quarter Common Interchange format (QCIF) and 0.144 dB for Common Interchange format (CIF) sequence as compared with the algorithm in JM12.2.According to the error of rate control, the control amplitude is increased to 37.3% for the QCIF sequence and 11.2% for the CIF sequence. Moreover, the PSNR fluctuations are reduced by 50% for both sequences. In conclusion, the proposed method not only decreases the error of rate control, but also depresses PSNR fluctuations effectively.
收录类别	EI
语种	中文
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/43975
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Zhao C.-L.,Dai M.,Sun L.-N.,et al. Estimation of initial quantization parameters for H.264/AVC rate control[J]. Guangxue Jingmi Gongcheng/Optics and Precision Engineering,2014,22(9):2553-2564.
APA	Zhao C.-L..,Dai M..,Sun L.-N..,Sun L..,Sun C.-S..,...&Feng L..(2014).Estimation of initial quantization parameters for H.264/AVC rate control.Guangxue Jingmi Gongcheng/Optics and Precision Engineering,22(9),2553-2564.
MLA	Zhao C.-L.,et al."Estimation of initial quantization parameters for H.264/AVC rate control".Guangxue Jingmi Gongcheng/Optics and Precision Engineering 22.9(2014):2553-2564.

条目包含的文件		下载所有文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
H.264_AVC码率控制中初始量化参数（1588KB）			开放获取	CC BY-ND	浏览下载