High-Performance Motion Estimation for Image Sensors with Video Compression

doi:10.3390/s150820752

	High-Performance Motion Estimation for Image Sensors with Video Compression
	Xu, Weizhi 1,2; Yin, Shouyi 1; Liu, Leibo 1; Liu, Zhiyong 3; Wei, Shaojun 1
	2015-08-01
发表期刊	SENSORS
ISSN	1424-8220
卷号	15 期号:8 页码:20752-20778
摘要	It is important to reduce the time cost of video compression for image sensors in video sensor network. Motion estimation (ME) is the most time-consuming part in video compression. Previous work on ME exploited intra-frame data reuse in a reference frame to improve the time efficiency but neglected inter-frame data reuse. We propose a novel inter-frame data reuse scheme which can exploit both intra-frame and inter-frame data reuse for ME in video compression (VC-ME). Pixels of reconstructed frames are kept on-chip until they are used by the next current frame to avoid off-chip memory access. On-chip buffers with smart schedules of data access are designed to perform the new data reuse scheme. Three levels of the proposed inter-frame data reuse scheme are presented and analyzed. They give different choices with tradeoff between off-chip bandwidth requirement and on-chip memory size. All three levels have better data reuse efficiency than their intra-frame counterparts, so off-chip memory traffic is reduced effectively. Comparing the new inter-frame data reuse scheme with the traditional intra-frame data reuse scheme, the memory traffic can be reduced by 50% for VC-ME.
关键词	memory bandwidth image sensors video compression motion estimation full search inter-frame data reuse
DOI	10.3390/s150820752
收录类别	SCI
语种	英语
资助项目	China Major ST Project[2013ZX01033001-001-003] ; International S&T Cooperation Project of China[2012DFA11170] ; Tsinghua Indigenous Research Project[20111080997] ; NNSF of China[61274131] ; NNSF of China[61303007] ; Shandong Provincial Natural Science Foundation, China[ZR2015FQ009] ; Research Fund for Excellent Young and Middle-aged Scientists of Shandong Province[BS2013DX044]
WOS研究方向	Chemistry ; Electrochemistry ; Instruments & Instrumentation
WOS类目	Chemistry, Analytical ; Electrochemistry ; Instruments & Instrumentation
WOS记录号	WOS:000360906500150
出版者	MDPI AG
引用统计	被引频次：4[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://119.78.100.204/handle/2XEOYT63/9315
专题	中国科学院计算技术研究所期刊论文_英文
通讯作者	Yin, Shouyi
作者单位	1.Tsinghua Univ, Inst Microelect, Beijing 100084, Peoples R China 2.Shandong Normal Univ, Sch Informat Sci & Engn, Jinan 250014, Peoples R China 3.Chinese Acad Sci, Inst Comp Technol, State Key Lab Comp Architecture, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Xu, Weizhi,Yin, Shouyi,Liu, Leibo,et al. High-Performance Motion Estimation for Image Sensors with Video Compression[J]. SENSORS,2015,15(8):20752-20778.
APA	Xu, Weizhi,Yin, Shouyi,Liu, Leibo,Liu, Zhiyong,&Wei, Shaojun.(2015).High-Performance Motion Estimation for Image Sensors with Video Compression.SENSORS,15(8),20752-20778.
MLA	Xu, Weizhi,et al."High-Performance Motion Estimation for Image Sensors with Video Compression".SENSORS 15.8(2015):20752-20778.