Influence of the angles and number of scans on the accuracy of 3D laser scanning / 대한치과교정학회지
Korean Journal of Orthodontics
;
: 76-86, 2011.
Article
in Korean
| WPRIM
| ID: wpr-645222
ABSTRACT
OBJECTIVE:
To investigate whether the accuracy of 3D laser scanning is influenced by the angles and number of scans.METHODS:
Using a 3D laser scanner, 10 manikins with facial markers were scanned at 7 horizontal angles (front view and at 20degrees, 45degrees, and 60degrees angles on the right and left sides). Three-dimensional facial images were reconstructed by 6 methods differing in the number and angles of scans, and measurements of these images were compared to the physical measurements from the manikins.RESULTS:
The laser scan images were magnified by 0.14 - 0.26%. For images reconstructed by merging 2 scans, excluding the front view; and by merging 3 scans, including the front view and scans obtained at 20degrees on both sides; several measurements were significantly different than the physical measurements. However, for images reconstructed by merging 3 scans, including the front view; and 5 scans, including the front view and scans obtained at 20degrees and 60degrees on both sides; only 1 measurement was significantly different.CONCLUSIONS:
These results suggest that the number and angle of scans influence the accuracy of 3D laser scanning. A minimum of 3 scans, including the front view and scans obtained at more than 45degrees on both sides, should be integrated to obtain accurate 3D facial images.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Manikins
Language:
Korean
Journal:
Korean Journal of Orthodontics
Year:
2011
Type:
Article
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