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Technology of Graphic & Image
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3515-3520

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

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, this paper proposed a low-latency rate-distortion optimization algorithm based on the temporal influence of coding distortion. Firstly, leveraging the temporal propagation continuity characteristics of video images, it computed the temporal propagation influence weight of encoding distortion by considering motion compensation prediction errors and reconstruction errors. Secondly, it established a rate-distortion optimization model based on the temporal propagation impact of encoding distortion. Lastly, it utilized 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 decrease 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 Printed Article, Vol. 41, 2024 No. 11
Section: Technology of Graphic & Image
Pages: 3515-3520
Serial Number: 1001-3695(2024)11-046-3515-06

Publish History

[2024-07-04] Accepted Paper
[2024-11-05] Printed Article

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 (11): 3515-3520. (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 (11): 3515-3520. )

About the Journal

  • Application Research of Computers Monthly Journal
  • Journal ID ISSN 1001-3695
    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.

Aiming at the urgently needed cutting-edge technology in this discipline, Application Research of Computers reflects the mainstream technology, hot technology and the latest development trend of computer application research at home and abroad in a timely manner. The main contents of the journal include high-level academic papers in this discipline, the latest scientific research results and major application results. The contents of the columns involve new theories of computer discipline, basic computer theory, algorithm theory research, algorithm design and analysis, blockchain technology, system software and software engineering technology, pattern recognition and artificial intelligence, architecture, advanced computing, parallel processing, database technology, computer network and communication technology, information security technology, computer image graphics and its latest hot application technology.

Application Research of Computers has many high-level readers and authors, and its readers are mainly senior and middle-level researchers and engineers engaged in the field of computer science, as well as teachers and students majoring in computer science and related majors in colleges and universities. Over the years, the total citation frequency and Web download rate of Application Research of Computers have been ranked among the top of similar academic journals in this discipline, and the academic papers published are highly popular among the readers for their novelty, academics, foresight, orientation and practicality.


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