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A low delay rate control method for screen content coding

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A Correction to this article was published on 24 July 2020

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Abstract

Unlike conventional camera captured video (CCV), the screen content video (SCV) is generated by computer, like text, animation, or graphics. The SCV contents are discontinuous, as one abrupt frame is often followed by many static frames. These distinct characteristics bring challenges to the implementation of rate control in screen content coding (SCC). This paper proposes a low delay rate control method for SCC in HEVC (High Efficiency Video Coding). Firstly, a bit allocation scheme considering buffer status and picture complexity is proposed. Then, an R − MAD (Rate-Mean Absolute Difference)model is built to estimate frame QP (quantization parameter) according to allocated bits. Finally, a dynamical adjusting scheme is designed to fix the error of the estimated frame QP. Experimental results show that the proposed method could effectively avoid buffer overflow and improve the coding efficiency over the recommended rate control scheme in HEVC.

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  • 24 July 2020

    In the original publication, the corresponding author���s affiliation was incorrect. The correct affiliation is presented in this erratum. The author regrets this mistake.

Notes

  1. complexity is measured by MAD [10]

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Acknowledgments

”This work is partially supported by the National Key Research and Development Program of China (under Grant 2017YFA0700900, 2017YFA0700903), and the NSF of China (under Grants 61672491, 61732020).”

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Authors and Affiliations

  1. Communication Institute, Chongqing University of Posts and Telecommunications, Chongqing, China

    Tong Tang

  2. Institute of Software, Chinese Academy of Sciences, Beijing, China

    Ling Li

  3. University of Chinese Academy of Sciences, Beijing, China

    Ling Li

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  1. Tong Tang
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  2. Ling Li
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Correspondence to Tong Tang.

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Tang, T., Li, L. A low delay rate control method for screen content coding. Multimed Tools Appl 78, 28231–28256 (2019). https://doi.org/10.1007/s11042-019-07910-9

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