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A novel rate control algorithm for video coding based on fuzzy-PID controller

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Abstract

Rate control algorithms (RCAs) aim to achieve the best visual quality under the minimum bit rate and the limited buffer size. A self-parameter-tuning fuzzy-PID controller is proposed to reduce the deviation between the target buffer level and the current buffer fullness. Fuzzy logic is used to tune each parameter of the proportional-integral-derivative controller by selecting appropriate fuzzy rules through simulation in H.264/advanced video coding (AVC). To control the quality fluctuation between consecutive frames, a quality controller is adopted. The proposed RCA has been implemented in an H.264/AVC video codec, and our experimental results show that the proposed algorithm achieves smooth target bits while enabling better buffer control and visual quality.

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Abbreviations

\(n_{i,j}\) :

Number of frames in the \(j\)th frame of the \(i\)th GOP

Fr:

Frame rate

Bs:

Buffer size

\(R(n_{i,j})\) :

Output bits

\(Q(n_{i,j})\) :

Quantization parameter

\(u(n_{i,j})\) :

Available channel bandwidth

\(\mathrm{Np}(n_{i,j})\) :

Total number of the remaining inter-P-frames in the current GOP

\(\mathrm{Tr}(n_{i,j})\) :

Remaining bits in the GOP

\(\mathrm{TBL}(n_{i,j})\) :

Target buffer level

\(\mathrm{CBF}(n_{i,j})\) :

Current buffer fullness

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Authors and Affiliations

  1. School of Electronic and Information Engineering, Tianjin University, Tianjin, 300072, China

    Yonghong Hou, Pichao Wang, Zhimin Gao & Chunping Hou

  2. Faculty of Engineering and Surveying, University of Southern Queensland, Toowoomba, QLD, 4350, Australia

    Wei Xiang

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  1. Yonghong Hou
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  2. Pichao Wang
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  3. Wei Xiang
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  4. Zhimin Gao
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  5. Chunping Hou
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Correspondence to Wei Xiang.

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Hou, Y., Wang, P., Xiang, W. et al. A novel rate control algorithm for video coding based on fuzzy-PID controller. SIViP 9, 875–884 (2015). https://doi.org/10.1007/s11760-013-0518-2

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  • DOI: https://doi.org/10.1007/s11760-013-0518-2

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