HEVC rate control for unmanned aerial vehicle airborne reconnaissance

	HEVC rate control for unmanned aerial vehicle airborne reconnaissance
	Zhao, C.-L.; M. Dai and C.-L. Yin
	2015
发表期刊	Guangxue Jingmi Gongcheng/Optics and Precision Engineering
卷号	23 期号:12 页码:3500-3508
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.
文章类型	期刊论文
收录类别	EI
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/56146
专题	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.

条目包含的文件		下载所有文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
无人机机载侦察视频的高效视频码率控制.c（354KB）	期刊论文	作者接受稿	开放获取	CC BY-NC-SA	浏览请求全文