%0 Journal Article
%T Contour Extraction of Moving Objects in Color Image Sequences<br>彩色图像序列中运动目标外轮廓的自动提取
%A Liu Yang
%A Li Yu-shan
%A Zhang Da-pu
%A <br>刘 洋
%A 李玉山
%A 张大朴
%J 电子与信息学报
%D 2006
%I 
%X A new algorithm to extract accurate contours of multiple moving objects is proposed in this paper. The main contributions of this paper include two parts: firstly, exponential filter is used to calculate the gradient magnitude of color image and the localization accuracy of local maximum of gradient in color image is increased, the gradient magnitude and the motion edges are used subsequently in contour iteration to prevent the contour from shrinking successfully; secondly, the directions of contour are used to prevent the active contour from expanding effectively. As a result, the real compact contours would be extracted automatically by using this algorithm. The experiments show the high efficiency of this algorithm for contours extraction of moving objects from color image sequence with complex background.
%K Active contour
%K Motion detection
%K Exponential filter
%K Background subtraction<br>动态轮廓
%K 运动检测
%K 指数滤波
%K 背景减除
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=1319827C0C74AAE8D654BEA21B7F54D3&jid=EFC0377B03BD8D0EF4BBB548AC5F739A&aid=3806D9140B91C5CF&yid=37904DC365DD7266&vid=D3E34374A0D77D7F&iid=9CF7A0430CBB2DFD&sid=617DEAEB2884AFC7&eid=EE882EEBF9236453&journal_id=1009-5896&journal_name=电子与信息学报&referenced_num=0&reference_num=9