Development of a 3-D measurement and evaluation system for facial forms with a liquid crystal range finder.

Abstract:

:A 3-D measurement and evaluation system for facial forms was developed with a liquid crystal range finder (LCRF). Its mechanical resolution was approximately/= 0.4 mm, and it was capable of measuring >30000 points from the entire facial surface in one second. An original program was developed to identify facial landmarks using not only linear distances, but also 3D-curvatures and discriminant analysis of the RGB data. With this program, the 3-D identification of anthropometrical points became possible with high accuracy. Due to the rapidity of the measuring apparatus and morphological evaluation system, it became possible to analyze the facial forms of infants such as cleft lip patients three dimensionally, without any sedation. Therefore, 97 normal infants (mean: 4.3 months of age) were measured and analyzed with this system. A cleft lip infant was measured and compared with the normal infants before and after cleft lip surgery, and the improved points and remaining problems were clearly recognized.

authors

Yamada T,Sugahara T,Mori Y,Minami K,Sakuda M

doi

10.1016/s0169-2607(98)00064-9

subject

Has Abstract

pub_date

1999-02-01 00:00:00

pages

159-73

issue

2

eissn

0169-2607

issn

1872-7565

pii

S0169-2607(98)00064-9

journal_volume

58

pub_type

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