Bias compensated least squares estimate of the center of rotation

被引：91
作者：
Halvorsen, K [1 ]
机构：
[1] Uppsala Univ, Dept Syst & Control Informat Technol, SE-75105 Uppsala, Sweden
来源：
JOURNAL OF BIOMECHANICS | 2003年 / 36卷 / 07期
关键词：
center of rotation; joint center; joint model; least squares;
D O I：
10.1016/S0021-9290(03)00070-8
中图分类号：
Q6 [生物物理学];
学科分类号：
071011 ;
摘要：
It is shown that a recently published least squares method for the estimation of the average center of rotation is biased. Consequently, a correction term is proposed, and an iterative algorithm is derived for finding a bias compensated solution to the least squares problem. The accuracy of the proposed bias compensated least squares method is compared to the previously proposed least squares method by Monte-Carlo simulations. The tests show that the new method gives a substantial improvement in accuracy. (C) 2003 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：999 / 1008
页数：10
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