Document Detail


Digital three-dimensional photogrammetry: evaluation of anthropometric precision and accuracy using a Genex 3D camera system.
MedLine Citation:
PMID:  15352857     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
OBJECTIVE: To determine the precision and accuracy of facial anthropometric measurements obtained through digital three-dimensional (3D) photogrammetry. DESIGN: Nineteen standard craniofacial measurements were repeatedly obtained on 20 subjects by two independent observers, using calipers and 3D photos (obtained with a Genex 3D camera system), both with and without facial landmarks labeled. Four different precision estimates were then calculated and compared statistically across techniques. In addition, mean measurements from 3D photos were compared statistically with those from direct anthropometry. RESULTS: In terms of measurement precision, the 3D photos were clearly better than direct anthropometry. In almost all cases, the 3D photo with landmarks labeled had the highest overall precision. In addition, labeling landmarks prior to taking measurements improved precision, regardless of method. Good congruence was observed between means derived from the 3D photos and direct anthropometry. Statistically significant differences were noted for seven measurements; however, the magnitude of these differences was often clinically insignificant (< 2 mm). CONCLUSIONS: Digital 3D photogrammetry with the Genex camera system is sufficiently precise and accurate for the anthropometric needs of most medical and craniofacial research designs.
Authors:
Seth M Weinberg; Nicole M Scott; Katherine Neiswanger; Carla A Brandon; Mary L Marazita
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Publication Detail:
Type:  Evaluation Studies; Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  The Cleft palate-craniofacial journal : official publication of the American Cleft Palate-Craniofacial Association     Volume:  41     ISSN:  1055-6656     ISO Abbreviation:  Cleft Palate Craniofac. J.     Publication Date:  2004 Sep 
Date Detail:
Created Date:  2004-09-08     Completed Date:  2004-11-22     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  9102566     Medline TA:  Cleft Palate Craniofac J     Country:  United States    
Other Details:
Languages:  eng     Pagination:  507-18     Citation Subset:  D; IM    
Affiliation:
Department of Anthropology, University of Pittsburgh, Pittsburgh, Pennsylvania, USA.
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MeSH Terms
Descriptor/Qualifier:
Adolescent
Adult
Cephalometry / instrumentation*,  methods*
Face / anatomy & histology*
Humans
Image Processing, Computer-Assisted / methods*
Imaging, Three-Dimensional / instrumentation,  methods*
Middle Aged
Observer Variation
Photogrammetry / instrumentation*
Reproducibility of Results
Statistics, Nonparametric
Grant Support
ID/Acronym/Agency:
P60-DE-13076/DE/NIDCR NIH HHS; R01-DE-09886/DE/NIDCR NIH HHS

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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