Quantization Parameter Cascading for Surveillance Video Coding Considering All Inter Reference Frames
Quantization Parameter Cascading for Surveillance Video Coding Considering All Inter Reference Frames
复制标题
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
中科院分区:
文献类型:
--
作者:
Gong Yanchao;Yang Kaifang;Liu Ying;Lim Keng-Pang;Ling Nam;Wu Hong Ren
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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DOI:
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