Artificial joint surface fitting based on moving least squares methods

Author

Jin Xiangyang

Author_Institution

Harbin Univ. of Commerce, Harbin, China

fYear

2010

fDate

29-31 July 2010

Firstpage

5510

Lastpage

5513

Abstract

A new method about three dimensional artificial joint surfaces fitting based on moving least-squares (MLS) is introduced. Through studying the construction method and characters of interpolated function, basis function and weight function are selected reasonably, the characteristics of design process of surface fitting are given. This paper presents an analysis of the effects of the parameters in MLS, such as the dimensions of basis function, the number of points in the support domain, and the coefficient of weight function. Three dimensional knees joint fitting case is given in the paper, the smoothness and fitting quality are analyzed. The fitting results show that this method has high degree of accuracy, high smoothness and large coverage and is suitable for nonlinear surface fitting. Using moving least-squares methods to fit artificial joint is valid and superior.

Keywords

artificial limbs; interpolation; least squares approximations; nonlinear control systems; surface fitting; basis function; design process; fitting quality; interpolated function; moving least squares methods; nonlinear surface fitting; three dimensional artificial joint surfaces fitting; three dimensional knees joint fitting; weight function; Electronic mail; Fitting; Image reconstruction; Joints; Surface fitting; Surface reconstruction; Surface treatment; Data Reconstruction; Moving Least Squares; Nonlinear Surface Fitting; Weight Function;

fLanguage

English

Publisher

ieee

Conference_Titel

Control Conference (CCC), 2010 29th Chinese

Conference_Location

Beijing

Print_ISBN

978-1-4244-6263-6

Type

conf

Filename

5573175