λ-Domain VVC Rate Control Based on Nash Equilibrium
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review
Author(s)
Related Research Unit(s)
Detail(s)
Original language | English |
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Pages (from-to) | 3477-3487 |
Journal / Publication | IEEE Transactions on Circuits and Systems for Video Technology |
Volume | 33 |
Issue number | 7 |
Online published | 21 Dec 2022 |
Publication status | Published - Jul 2023 |
Link(s)
Abstract
With a significant Rate-Distortion (RD) improvement than H.265/HEVC, Versatile Video Coding (VVC) has set a new milestone in lossy video compression. It also incorporates the emerging λ-domain rate control technique, aiming at a higher visual quality under a fixed bit constraint. However, the challenge remains how to efficiently allocate bits to all frames and Coding Tree Units (CTUs). In this paper, we propose an effective solution by formulating the above task as a Nash equilibrium problem, where all CTUs are treated as players that bargains with each other. By introducing λ-domain RD models, a constrained optimization is derived with no closed-form solution. We then propose a two-step strategy to address this issue: a Newton method to iteratively calculate an intermediate variable, and a final solution of Nash equilibrium to obtain an approximately optimal λ. Finally, we utilize the derived λ to perform an effective CTU-level bit allocation, which is the very first attempt to introduce Nash equilibrium in λ-domain rate control. Experimental results with Common Test Conditions (CTC) demonstrate the effectiveness and superiority of our method, which outperforms the state-of-the-art CTU-level rate allocation algorithms for VVC.
© 2022 IEEE. Personal use is permitted, but republication/redistribution requires IEEE permission.
© 2022 IEEE. Personal use is permitted, but republication/redistribution requires IEEE permission.
Research Area(s)
- rate control, video coding, VVC, λ-domain RD model
Citation Format(s)
λ-Domain VVC Rate Control Based on Nash Equilibrium. / Lin, Jielian; Huang, Aiping; Zhao, Tiesong et al.
In: IEEE Transactions on Circuits and Systems for Video Technology, Vol. 33, No. 7, 07.2023, p. 3477-3487.
In: IEEE Transactions on Circuits and Systems for Video Technology, Vol. 33, No. 7, 07.2023, p. 3477-3487.
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review