[Evaluation of measurement accuracy of three facial scanners based on different scanning principles].
Beijing Da Xue Xue Bao Yi Xue Ban
; 46(1): 76-80, 2014 Feb 18.
Article
in Zh
| MEDLINE
| ID: mdl-24535353
ABSTRACT
OBJECTIVE:
To evaluate and compare the measurement accuracy of three facial scanners, based on different scanning principles line laser, structured light and stereophotography.METHODS:
Three-dimensional (3D) digital face models of the same plaster head model were obtained by three facial scanners separately. The measurement values of the length of 10 feature lines and the angle of 5 feature angles were measured on these 3D models in the software respectively. The standard values of these characteristics were measured by a coordinate measure machine (CMM) with high accuracy. Statistical and surveying analyses were made between the measurement values and standard values. Facial morphology theory measurement accuracy of these three facial scanners was obtained finally.RESULTS:
There was no statistical significant difference between the measurement values from the three facial scanners and the standard value from CMM. The 3dMD and Faro scanners were better in length measurements and the length measurement accuracy was about 0.2 mm. The Faro scanner was also better in angle measurements and the angle measurement accuracy was about 0.5°.CONCLUSION:
The three facial scanners all have good reliability in facial measurements, and their actual measurement accuracy for patients needs further research.
Search on Google
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Imaging, Three-Dimensional
/
Face
Type of study:
Prognostic_studies
/
Qualitative_research
Limits:
Humans
Language:
Zh
Journal:
Beijing Da Xue Xue Bao Yi Xue Ban
Journal subject:
MEDICINA
Year:
2014
Document type:
Article
Affiliation country:
China