[Research on point cloud smoothing in knee joint prosthesis modeling based on reverse engineering].
At present, foreign standard knee joint prosthesis is mostly used in clinical practice; it can well represent the biological characteristic of knee joint on human being. So this paper adopts the reverse engineering technology in that connexion, presents novel positioning method of acquiring the point data on the surface of knee joint prosthesis, puts forward the algorithm of three-point angle method for removing the noise error and correcting the noise error based on the least squares plane to smooth point cloud. And then, the surface of knee joint prosthesis with better accuracy and smoothness can be generated. Finally, the knee joint prosthesis model can be generated. Thus, a basis is provided for the localization of knee joint prosthesis. This new algorithm is mainly used for the surface modeling based on point cloud smoothing, including the surface of knee joint prosthesis, the surface of regular shape, and the surface with gentle change in curvature.
Zhang
Guoliang
G
School of Manufacturing Science and Engineering, Sichuan University, Chengdu 610065, China.
Yao
Jin
J
Wei
Xing
X
Pei
Fuxing
F
Zhou
Zongke
Z
D017076:Computer-Aided Design; D006801:Humans; D007719:Knee Joint / Q000033:anatomy & histology* / Q000601:surgery; D007720:Knee Prosthesis; D011474:Prosthesis Design / Q000379:methods*; D017755:Prosthesis Fitting / Q000379:methods*