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	ADAPTIVE RATE CONTROL FOR HIGH EFFICIENCY VIDEO CODING
	Si, Junjun ; Ma, Siwei ; Zhang, Xinfeng ; Gao, Wen
	2012
关键词	rate control video coding HEVC quality smoothing RATE-DISTORTION ANALYSIS
英文摘要	A frame level adaptive rate control scheme for the emerging High Efficiency Video Coding (HEVC) standard is proposed in this paper, where both rate model and distortion model are provided. For rate modeling, a new rate model is proposed based on the weighted complexity estimation of the previously encoded frames. For distortion modeling, the distortion is modeled as an exponential function of the sum of absolute transformed difference (SATD) and the quantization parameter of the current frame. Moreover, a quality smoothing method based on the distortion model is proposed to reduce the quality fluctuation. The proposed rate control algorithm is implemented into HM5.0. The proposed scheme can control the bitrate acrruately with smoothing quality, and the coding gain compared with state-of-the-art technique is up to 0.64dB for LB HE & LB LC, 0.33dB, 0.31dB, 0.42dB, 0.44dB for LP HE, LP LC, RA HE and RA LC respectively.; Computer Science, Artificial Intelligence; Engineering, Electrical & Electronic; Imaging Science & Photographic Technology; CPCI-S(ISTP); 0
语种	英语
内容类型	其他
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/292815]
专题	信息科学技术学院
推荐引用方式 GB/T 7714	Si, Junjun,Ma, Siwei,Zhang, Xinfeng,et al. ADAPTIVE RATE CONTROL FOR HIGH EFFICIENCY VIDEO CODING. 2012-01-01.

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