基于二次码率失真模型的通用视频编码帧内速率控制

ICASSP 2020 - 2020 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP) Pub Date : 2020-05-01 DOI:10.1109/ICASSP40776.2020.9054633

Yi Chen, S. Kwong, Mingliang Zhou, Shiqi Wang, Guopu Zhu, Yi Wang

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引用次数: 13

摘要

在即将到来的通用视频编码(VVC)标准中采用了许多编码工具，因此研究相应的率失真(R-D)特性的工作要少得多。本文提出了一种新的二次R-D模型用于通用视频编码。在此基础上，推导了一种新的R-λ关系，并将其用于帧级速率控制。在VTM 2.0平台上实现了码内编码的速率控制算法。实验结果表明，与VTM 2.0中的默认速率控制算法相比，本文提出的速率控制算法在控制精度相近的情况下，可以实现0.77%的BD-BR降频。

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Intra Frame Rate Control for Versatile Video Coding with Quadratic Rate-Distortion Modelling

With numerous coding tools adopted in the forthcoming Versatile Video Coding (VVC) standard, much less work has been dedicated to study the corresponding Rate-Distortion (R-D) characteristics. This paper proposes a new quadratic R-D model for Versatile Video Coding. In particular, based on the proposed model, a new R-λ relationship is derived and used for frame level rate control. The rate control algorithm is implemented on VTM 2.0 platform for intra coding scenarios. Compared to the default rate control algorithm in VTM 2.0, experimental results show that proposed rate control algorithm can achieve 0.77% BD-BR reduction with similar control accuracy.

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ICASSP 2020 - 2020 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)

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