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《Journal of Zhejiang University(Engineering Science)》 2007-03
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Detecting and segmenting multiple moving objects using level-set method

YU Hui-min,YOU Yu-sai (Department of Information and Electronics Engineering,Zhejiang University,Hangzhou 310027,China)  
Aimed at the motion segmentation problem in video sequence,a novel approach for detecting and segmenting multiple moving objects was presented based on level-set method.The frame difference algorithm was used for dealing with the problem of initial background image extracting automatically,and different moving pixels in current image were detected through a subtracting technique.After a novel speed function based on local gradients of differencing image,object variances and background variances was defined,an improved evolution equation for segmentation curve was obtained,and then different moving objects were segmented.During the solution of the level-set equation,a condition controlling the curve evolution to stop on the object boundaries was set,and the moving object boundaries were achieved.Experimental results show that the proposed approach for detecting and segmenting multiple moving objects is much more robust and powerful than other traditional methods,and can exactly extract the moving object boundaries.
【Fund】: 浙江省科技厅资助项目(2006C21035);; 国家科学自然基金资助项目(10577017)
【CateGory Index】: TP391.41
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