App. Res. of Comp. Accepted Paper
Vol. 41, 2024 No. 10

Rate-distortion optimization algorithm based on temporal impact of reference unit coding distortion

Huang Minfeng1
Wang Lecai1
Deng Mixue1
Sheng Jianfeng1
Wang Liming1
Yang Xu2
1. China Mobile(Hangzhou) Information Technology Co, Ltd, Hangzhou 311100, China
2. School of Physics & Engineering Technology, Chengdu Normal University, Chengdu 611130, China
DOI: 10.19734/j.issn.1001-3695.2024.01.0038

Abstract

The independent rate-distortion optimization technique for the video coding standard H. 266/VVC (versatile video coding) suffers from a loss in coding performance due to the oversight of temporal propagation effects of coding distortion in reference unit. To address this issue, we propose a low-latency rate-distortion optimization algorithm based on the temporal influence of coding distortion. Firstly, leveraging the temporal continuity characteristics of video images, we compute the temporal propagation influence weight of encoding distortion by considering motion compensation prediction errors and reconstruction errors. Secondly, we establish a rate-distortion optimization model based on the temporal propagation impact of encoding distortion. Lastly, we utilize the temporal propagation influence weight of encoding distortion to adjust the Lagrange multipliers and quantization parameters of coding units. Experimental results demonstrate that, under low-delay P-frame and B-frame configurations, compared to the baseline algorithm, the BD-rate savings reach 1.6% and 0.9%, and the coding time decreases by 2.93% and 6.02%, respectively. The experimental results demonstrate that the algorithm proposed in this paper effectively improves coding performance without increasing encoding complexity, making it suitable for real-time encoding applications.

Foundation Support

国家自然科学基金资助项目(62020106011,U19A2052,62061015,62171257,U22B2001)

Publish Information

DOI: 10.19734/j.issn.1001-3695.2024.01.0038
Publish at: Application Research of Computers Accepted Paper, Vol. 41, 2024 No. 10

Publish History

[2024-07-04] Accepted Paper

Cite This Article

黄敏峰, 王乐才, 邓米雪, 等. 基于参考单元编码失真时域影响的率失真优化算法 [J]. 计算机应用研究, 2024, 41 (10). (2024-07-12). https://doi.org/10.19734/j.issn.1001-3695.2024.01.0038. (Huang Minfeng, Wang Lecai, Deng Mixue, et al. Rate-distortion optimization algorithm based on temporal impact of reference unit coding distortion [J]. Application Research of Computers, 2024, 41 (10). (2024-07-12). https://doi.org/10.19734/j.issn.1001-3695.2024.01.0038. )

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  • Application Research of Computers Monthly Journal
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    CN  51-1196/TP

Application Research of Computers, founded in 1984, is an academic journal of computing technology sponsored by Sichuan Institute of Computer Sciences under the Science and Technology Department of Sichuan Province.

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