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	Spatiotemporal segmentation based on two-dimensional spatiotemporal entropic thresholding
	Fan JP ; Zhang LM ; Gan FX(干福熹)
刊名	opt. eng.
	1997
卷号	36期号:10页码:2845
关键词	segmentation spatiotemporal entropic thresholding coding complexity human visual masking
ISSN号	0091-3286
中文摘要	a novel spatiotemporal segmentation technique is further developed for extracting uncovered background and moving objects from the image sequences, then the following motion estimation is performed only on the regions corresponding to moving objects. the frame difference contrast (fcon) and local variance contrast (lcon), which are related to the temporal and spatial homogeneity of the image sequence, are selected to form the 2-d spatiotemporal entropy. then the spatial segmentation threshold is determined by maximizing the 2-d spatiotemporal entropy, and the temporal segmentation point is selected to minimize the complexity measure for image sequence coding. since both temporal and spatial correlation of an image sequence are exploited, this proposed spatiotemporal segmentation technique can further be used to determine the positions of reference frames adaptively, hence resulting in a low bit rate. experimental results show that this segmentation-based coding scheme is more efficient than usual fixed-size coding algorithms. (c) 1997 society of photo-optical instrumentation engineers.
学科主题	光存储
语种	英语
公开日期	2009-09-22 ; 2010-10-12
内容类型	期刊论文
源URL	[http://ir.siom.ac.cn/handle/181231/3727]
专题	上海光学精密机械研究所_高密度光存储技术实验室
推荐引用方式 GB/T 7714	Fan JP,Zhang LM,Gan FX. Spatiotemporal segmentation based on two-dimensional spatiotemporal entropic thresholding[J]. opt. eng.,1997,36(10):2845, 2851.
APA	Fan JP,Zhang LM,&干福熹.(1997).Spatiotemporal segmentation based on two-dimensional spatiotemporal entropic thresholding.opt. eng.,36(10),2845.
MLA	Fan JP,et al."Spatiotemporal segmentation based on two-dimensional spatiotemporal entropic thresholding".opt. eng. 36.10(1997):2845.

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