Analysis of Error Factor in Estimation of Anatomical Landmarks from 3D Foot Model using Free-Form Deformation
Analysis of Error Factor in Estimation of Anatomical Landmarks from 3D Foot Model using Free-Form Deformation
复制标题
使用自由变形从 3D 足模型估计解剖标志的误差因素分析
DOI：
10.3756/artsci.4.168
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发表时间：
2005
期刊：
影响因子：
--
通讯作者：
M. Kouchi
中科院分区：
文献类型：
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作者：
H. Yahara;Kazunori Mizuno;Y. Fukui;S. Nishihara;M. Mochimaru;M. Kouchi
为了设计出符合人体的工业产品，必须充分利用人体解剖标志信息。然而，这些标志不能从由3D扫描仪获得的人体表面的点云数据中自动提取。在我们以前的报告中，我们提出了通过使用自由形式变形（FFD）方法对具有已知地标位置的点云形式数据的模板进行变形来自动提取地标的方法。在该方法中，可以通过在保留解剖特征的情况下使模板模型变形来估计界标的位置。但该方法的估计误差大于允许值。本文分析了影响踝关节标志点估计误差的因素，提出了减小估计误差的修正方法。
In order to design industrial products fitting well to the human body, it is necessary to make full use of information of human anatomical landmarks. These landmarks however cannot be extracted automatically from point cloud data of human body surface obtained by a 3D scanner. In our previous report, we proposed the method of extracting the landmarks automatically by deforming the template of point cloud form data with known landmark positions using Free Form Deformation (FFD) method. In this method, it is possible to estimate positions of the landmark by deforming the template model with the anatomical feature retained. However, estimation error in the method was more than permissible amount. This paper discusses an analysis of the factors of estimation error, and proposes revised method of reduced estimated errors for landmarks around the ankle.