HEVC rate control for unmanned aerial vehicle airborne reconnaissance

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	HEVC rate control for unmanned aerial vehicle airborne reconnaissance
	Zhao, C.-L.; M. Dai and C.-L. Yin
刊名	Guangxue Jingmi Gongcheng/Optics and Precision Engineering
	2015
卷号	23 期号:12 页码:3500-3508
英文摘要	A High Efficiency Video Coding (HEVC) rate control algorithm with a low-delay was proposed based on buffer status and a gradient operator to improve the poor video quality of the current HEVC rate control scheme caused by the improper bit allocation in Unmanned Aerial Vehicle (UAV) airborne reconnaissance. First, both the buffer state and the remained bits were used to pre-allocate the frame layer target bits. Then, the time and space complexity of the Largest Coding Unit (LCU) in each frame was taken as the weight, layer bits hierarchically with the reconnaissance video features was evaluated by a gradient value. Finally, Quantization Parameter (QP) was derived from R- model, the encoder in the LCU and the model parameter updating were implemented. Experimental results show that the proposed algorithm reduces mismatch ratio to 2/5 that of the rate control scheme in HM16.0, and PSNR (Peak Signal-to-noise Ratio) fluctuation has been within 1/4 under the 8 Mbps bandwidth. Moreover, the proposed algorithm provides an improvement in subjective quality evaluation and has less bit fluctuation and lower, steadier buffer occupancy, which enables a lower delay of aerial photography applications. 2015, Science Press. All right reserved.
收录类别	EI
内容类型	期刊论文
源URL	[http://ir.ciomp.ac.cn/handle/181722/56146]
专题	长春光学精密机械与物理研究所_中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Zhao, C.-L.,M. Dai and C.-L. Yin. HEVC rate control for unmanned aerial vehicle airborne reconnaissance[J]. Guangxue Jingmi Gongcheng/Optics and Precision Engineering,2015,23(12):3500-3508.
APA	Zhao, C.-L.,&M. Dai and C.-L. Yin.(2015).HEVC rate control for unmanned aerial vehicle airborne reconnaissance.Guangxue Jingmi Gongcheng/Optics and Precision Engineering,23(12),3500-3508.
MLA	Zhao, C.-L.,et al."HEVC rate control for unmanned aerial vehicle airborne reconnaissance".Guangxue Jingmi Gongcheng/Optics and Precision Engineering 23.12(2015):3500-3508.