Quantitative evaluation of the measurement accuracy of 2 three-dimensional facial scanners
10.3969/j.issn.1001-3733.2016.01.008
- VernacularTitle:2种三维颜面部扫描仪测量精度的定量评价
- Author:
Yijiao ZHAO
;
Yuxue XIONG
;
Huifang YANG
;
Peijun LV
;
Yuchun SUN
;
Yong WANG
- Publication Type:Journal Article
- Keywords:
Three-dimensional facial imaging;
Facial landmarks;
Measurement accuracy;
Measurement error
- From:
Journal of Practical Stomatology
2016;32(1):37-42
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To evaluate the actual measurement accuracy of 2 three-dimensional(3D)facial scanners for real person. Methods:3D digital face models of 1 0 volunteers with normal ficial form were obtained by 3dMD and FaceScan facial scanners respec-tively.The measurement values of 1 0 feature lengths and 5 feature angles were measured on each 3D model by the software respective-ly.The reference values of all characteristics were acquired by line laser scanner (Faro)with high accuracy.Statistical and surveying analysis were taken between the measurement values and reference values.Facial morphology measurement error and actual accuracy of facial scanners were obtained finally.Data were statistically analysed.Results:The length measurement accuracy of 3dMD and FaceS-can was(-0.37 ±0.68)mm and (-0.29 ±0.53)mm(P =0.223),the angle measurement accuracy was (-0.22 ±2.1 4)°and (0.1 2 ±2.69)°(P =0.428),respectively.Conclusion:The 3D data of ficial morphology obtained by the 2 scanners are not signifi-cantly different.
