Quantization Parameter Cascading for Surveillance Video Coding Considering All Inter Reference Frames

Quantization Parameter Cascading for Surveillance Video Coding Considering All Inter Reference Frames
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考虑所有帧间参考帧的监控视频编码量化参数级联

DOI:
10.1109/tip.2021.3087413
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发表时间:
2021-06
影响因子:
10.6
通讯作者:
Wu Hong Ren
Wu Hong Ren
中科院分区:
计算机科学1区
文献类型:
--
作者:
Gong Yanchao;Yang Kaifang;Liu Ying;Lim Keng-Pang;Ling Nam;Wu Hong Ren

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视频监控及其应用在现代日常生活中越来越普遍。在视频监控系统中,视频编码作为一项关键的使能技术,决定了监控视频的有效传输和存储。为了满足视频监控系统的实时或时间关键传输要求,通常使用高级高效视频编码(HEVC)标准的低延迟(LD)配置来编码监控视频。LD配置的编码效率与选择或确定用于编码的量化参数(QP)级联技术密切相关。然而,当前在HEVC测试模型中用于LD配置的量化参数级联(QPC)技术(即,HM)没有被优化,因为它没有充分考虑编码中的参考依赖性。在本文中,一个有效的QPC技术的监控视频编码,简称QPC-SV,提出了考虑所有帧间参考帧下的LD配置。实验结果证明了所提出的QPC-SV的有效性。与HM中的QPC默认配置相比,QPC-SV实现了显著的率失真性能增益,LDP和LDB配置的平均BD率分别为-9.35%和-9.76%。
Video surveillance and its applications have become increasingly ubiquitous in modern daily life. In video surveillance system, video coding as a critical enabling technology determines the effective transmission and storage of surveillance videos. In order to meet the real-time or time-critical transmission requirements of video surveillance systems, the low-delay (LD) configuration of the advanced high efficiency video coding (HEVC) standard is usually used to encode surveillance videos. The coding efficiency of the LD configuration is closely related to the quantization parameter (QP) cascading technique which selects or determines the QPs for encoding. However, the quantization parameter cascading (QPC) technique currently adopted for the LD configuration in HEVC test model (i.e., HM) is not optimized since it has not taken full account of the reference dependency in coding. In this paper, an efficient QPC technique for surveillance video coding, referred to as QPC-SV, is proposed, considering all inter reference frames under the LD configuration. Experimental results demonstrate the efficacy of the proposed QPC-SV. Compared with the default configuration of QPC in the HM, the QPC-SV achieves significant rate-distortion performance gain with average BD-rates of −9.35% and −9.76% for the LDP and LDB configurations, respectively.
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