基于外观模型的人体下肢关节点定位方法  

Locating method about lower limber joints of human body based on appearance model

作　　者：杨路明[1] 桂彦[1] 曾庆东[1] 

机构地区：[1]中南大学信息科学与工程学院,长沙410083

出　　处：《计算机工程与应用》2008年第10期67-70,共4页Computer Engineering and Applications

基　　金：湖南省自然科学基金(the Natural Science Foundation of Hunan Province of China under Grant No.05JJ40128)

摘　　要：近年来,人体下肢关节点定位成为了人体运动跟踪与分析中一个重要研究课题。提出了一种下肢关节点自动定位方法,从无关节标记的人体运动图像序列中定位下肢关节点。该方法首先采用背景剪除技术从图像序列中分割人体目标对象,并建立人体下肢骨架模型。然后,利用关节角度预测方法估计膝踝关节点的位置,在基于下肢外观模型的匹配计算基础上获得下肢关节点的真实位置。实验结果表明,该方法简单有效,下肢关节点定位结果令人满意。The lower limber joint of human body location is currently one of the most important research topics in the domain of human motion tracking and human motion analysis.A novel approach is proposed for locating lower limber joints of human body from image sequences without markers.First the method employs a background subtraction to separate human object,and builds skeleton model of human lower limbers.Second the approach uses the prediction of joint-angles to evaluate the position of knee and ankle,and captures the exact position of lower limber joints through matched computing based on appearance model. Experimental results show that the approach is simple and effective,and the locating results are satisfactory.

关 键 词：人体运动跟踪 人体运动分析 下肢 外观模型 关节点定位 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术] TP391.4[自动化与计算机技术—计算机科学与技术]