Modeling background and segmenting moving objects from compressed video

doi:10.1109/TCSVT.2008.918800

CORC > 北京大学 > 信息科学技术学院

	Modeling background and segmenting moving objects from compressed video
	Wang, Weiqiang ; Yang, Jie ; Gao, Wen
刊名	ieee transactions on circuits and systems for video technology
	2008
关键词	background models discrete cosine transform (DCT) moving object segmentation video surveillance SEGMENTATION TRACKING
DOI	10.1109/TCSVT.2008.918800
英文摘要	Modeling background and segmenting moving objects are significant techniques for video surveillance and other video processing applications. Most existing methods of modeling background and segmenting moving objects mainly operate in the spatial domain at pixel level. In this paper, we present three new algorithms (running average, median, mixture of Gaussians) modeling background directly from compressed video, and a two-stage segmentation approach based on the proposed background models. The proposed methods utilize discrete cosine transform (DCT) coefficients (including ac coefficients) at block level to represent background, and adapt the background by updating DCT coefficients. The proposed segmentation approach can extract foreground objects with pixel accuracy through a two-stage process. First a new background subtraction technique in the DCT domain is exploited to identify the block regions fully or partially occupied by foreground objects, and then pixels from these foreground blocks are further classified in the spatial domain. The experimental results show the proposed background modeling algorithms can achieve comparable accuracy to their counterparts in the spatial domain, and the associated segmentation scheme can visually generate good segmentation results with efficient computation. For instance, the computational cost of the proposed median and MoG algorithms are only 40.4% and 20.6 % of their counterparts in the spatial domain for background construction.; Engineering, Electrical & Electronic; SCI(E); EI; 43; ARTICLE; 5; 670-681; 18
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/249050]
专题	信息科学技术学院
推荐引用方式 GB/T 7714	Wang, Weiqiang,Yang, Jie,Gao, Wen. Modeling background and segmenting moving objects from compressed video[J]. ieee transactions on circuits and systems for video technology,2008.
APA	Wang, Weiqiang,Yang, Jie,&Gao, Wen.(2008).Modeling background and segmenting moving objects from compressed video.ieee transactions on circuits and systems for video technology.
MLA	Wang, Weiqiang,et al."Modeling background and segmenting moving objects from compressed video".ieee transactions on circuits and systems for video technology (2008).