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Accuracy assessment of Procrustes analysis for computing mid-sagittal plane of three-dimensional facial data
Xiong Yuxue; Zhao Yijiao; Yang Huifang; Sun Yuchun; Wang Yong
Source PublicationINTERNATIONAL CONFERENCE ON OPTICAL AND PHOTONIC ENGINEERING
2015
Volume9524Issue:0Pages:0
Indexed BySCI
Abstract

Objective: The aim of this study is to assess the accuracy of Procrustes analysis(PA) to compute a mid-sagittal plane(MSP) of three-dimensional(3D) facial data.

Methods: Facial surface data from 30 subjects were acquired by a Face Scan optical 3D sensor. Using the data, 30 asymmetrical facial images with a true MSP for control purpose were constructed using the original facial image. The MSPs of the 30 images are then computed using Procrustes analysis. The angle between the true-MSP and the MSP obtained using the PA, and the asymmetry index serve as measures of assessing the accuracy of the Procrustes analysis to compute the MSP of 3D facial data.

Results: The mean value and the standard deviation of the angle between the true-MSP and the PA-MSP are 0.62 degrees and 0.49 degrees respectively. The t-test for paired groups is used to assess the differences between the two MSPs in the facial asymmetry index and P values of smaller than 0.05 are considered significant(t=0.783, p=0.440).

Conclusions: There are no significant differences between the PA-MSP and the true-MSP in terms of the asymmetry index of the 30 subjects. Thus the Procrustes analysis can be used to compute the MSP of 3D facial data with a significant degree of accuracy.

 

Document Type期刊论文
Identifierhttp://ir.bjmu.edu.cn/handle/400002259/184346
Collection北京大学口腔医学院
北京大学口腔医学院_口腔设备学教研室
北京大学口腔医学院_卫生部口腔医学计算机应用工程技术研究中心
北京大学口腔医学院_口腔数字医学北京市重点实验室
AffiliationPeking Univ, Sch & Hosipital Stomatol, Fac Prosthodont, Ctr Digital Dent, Beijing 100081, Peoples R China
First Author AffilicationPEKING UNIVERSITY HEALTH SCIENCE CENTER
Recommended Citation
GB/T 7714
Xiong Yuxue,Zhao Yijiao,Yang Huifang,et al. Accuracy assessment of Procrustes analysis for computing mid-sagittal plane of three-dimensional facial data[J]. INTERNATIONAL CONFERENCE ON OPTICAL AND PHOTONIC ENGINEERING,2015,9524(0):0.
APA Xiong Yuxue,Zhao Yijiao,Yang Huifang,Sun Yuchun,&Wang Yong.(2015).Accuracy assessment of Procrustes analysis for computing mid-sagittal plane of three-dimensional facial data.INTERNATIONAL CONFERENCE ON OPTICAL AND PHOTONIC ENGINEERING,9524(0),0.
MLA Xiong Yuxue,et al."Accuracy assessment of Procrustes analysis for computing mid-sagittal plane of three-dimensional facial data".INTERNATIONAL CONFERENCE ON OPTICAL AND PHOTONIC ENGINEERING 9524.0(2015):0.
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