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Can a spontaneous smile invalidate facial identification by photo-anthropometry?

PURPOSE: Using images in the facial image comparison process poses a challenge for forensic experts due to limitations such as the presence of facial expressions. The aims of this study were to analyze how morphometric changes in the face during a spontaneous smile influence the facial image compari...

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Autores principales: Pinto, Paulo Henrique Viana, Rodrigues, Caio Henrique Pinke, Rozatto, Juliana Rodrigues, da Silva, Ana Maria Bettoni Rodrigues, Bruni, Aline Thais, da Silva, Marco Antônio Moreira Rodrigues, da Silva, Ricardo Henrique Alves
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Korean Academy of Oral and Maxillofacial Radiology 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8479441/
https://www.ncbi.nlm.nih.gov/pubmed/34621655
http://dx.doi.org/10.5624/isd.20210002
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author Pinto, Paulo Henrique Viana
Rodrigues, Caio Henrique Pinke
Rozatto, Juliana Rodrigues
da Silva, Ana Maria Bettoni Rodrigues
Bruni, Aline Thais
da Silva, Marco Antônio Moreira Rodrigues
da Silva, Ricardo Henrique Alves
author_facet Pinto, Paulo Henrique Viana
Rodrigues, Caio Henrique Pinke
Rozatto, Juliana Rodrigues
da Silva, Ana Maria Bettoni Rodrigues
Bruni, Aline Thais
da Silva, Marco Antônio Moreira Rodrigues
da Silva, Ricardo Henrique Alves
author_sort Pinto, Paulo Henrique Viana
collection PubMed
description PURPOSE: Using images in the facial image comparison process poses a challenge for forensic experts due to limitations such as the presence of facial expressions. The aims of this study were to analyze how morphometric changes in the face during a spontaneous smile influence the facial image comparison process and to evaluate the reproducibility of measurements obtained by digital stereophotogrammetry in these situations. MATERIALS AND METHODS: Three examiners used digital stereophotogrammetry to obtain 3-dimensional images of the faces of 10 female participants (aged between 23 and 45 years). Photographs of the participants' faces were captured with their faces at rest (group 1) and with a spontaneous smile (group 2), resulting in a total of 60 3-dimensional images. The digital stereophotogrammetry device obtained the images with a 3.5-ms capture time, which prevented undesirable movements of the participants. Linear measurements between facial landmarks were made, in units of millimeters, and the data were subjected to multivariate and univariate statistical analyses using Pirouette® version 4.5 (InfoMetrix Inc., Woodinville, WA, USA) and Microsoft Excel® (Microsoft Corp., Redmond, WA, USA), respectively. RESULTS: The measurements that most strongly influenced the separation of the groups were related to the labial/buccal region. In general, the data showed low standard deviations, which differed by less than 10% from the measured mean values, demonstrating that the digital stereophotogrammetry technique was reproducible. CONCLUSION: The impact of spontaneous smiles on the facial image comparison process should be considered, and digital stereophotogrammetry provided good reproducibility.
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spelling pubmed-84794412021-10-06 Can a spontaneous smile invalidate facial identification by photo-anthropometry? Pinto, Paulo Henrique Viana Rodrigues, Caio Henrique Pinke Rozatto, Juliana Rodrigues da Silva, Ana Maria Bettoni Rodrigues Bruni, Aline Thais da Silva, Marco Antônio Moreira Rodrigues da Silva, Ricardo Henrique Alves Imaging Sci Dent Original Article PURPOSE: Using images in the facial image comparison process poses a challenge for forensic experts due to limitations such as the presence of facial expressions. The aims of this study were to analyze how morphometric changes in the face during a spontaneous smile influence the facial image comparison process and to evaluate the reproducibility of measurements obtained by digital stereophotogrammetry in these situations. MATERIALS AND METHODS: Three examiners used digital stereophotogrammetry to obtain 3-dimensional images of the faces of 10 female participants (aged between 23 and 45 years). Photographs of the participants' faces were captured with their faces at rest (group 1) and with a spontaneous smile (group 2), resulting in a total of 60 3-dimensional images. The digital stereophotogrammetry device obtained the images with a 3.5-ms capture time, which prevented undesirable movements of the participants. Linear measurements between facial landmarks were made, in units of millimeters, and the data were subjected to multivariate and univariate statistical analyses using Pirouette® version 4.5 (InfoMetrix Inc., Woodinville, WA, USA) and Microsoft Excel® (Microsoft Corp., Redmond, WA, USA), respectively. RESULTS: The measurements that most strongly influenced the separation of the groups were related to the labial/buccal region. In general, the data showed low standard deviations, which differed by less than 10% from the measured mean values, demonstrating that the digital stereophotogrammetry technique was reproducible. CONCLUSION: The impact of spontaneous smiles on the facial image comparison process should be considered, and digital stereophotogrammetry provided good reproducibility. Korean Academy of Oral and Maxillofacial Radiology 2021-09 2021-07-13 /pmc/articles/PMC8479441/ /pubmed/34621655 http://dx.doi.org/10.5624/isd.20210002 Text en Copyright © 2021 by Korean Academy of Oral and Maxillofacial Radiology https://creativecommons.org/licenses/by-nc/3.0/This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/ (https://creativecommons.org/licenses/by-nc/3.0/) ) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Original Article
Pinto, Paulo Henrique Viana
Rodrigues, Caio Henrique Pinke
Rozatto, Juliana Rodrigues
da Silva, Ana Maria Bettoni Rodrigues
Bruni, Aline Thais
da Silva, Marco Antônio Moreira Rodrigues
da Silva, Ricardo Henrique Alves
Can a spontaneous smile invalidate facial identification by photo-anthropometry?
title Can a spontaneous smile invalidate facial identification by photo-anthropometry?
title_full Can a spontaneous smile invalidate facial identification by photo-anthropometry?
title_fullStr Can a spontaneous smile invalidate facial identification by photo-anthropometry?
title_full_unstemmed Can a spontaneous smile invalidate facial identification by photo-anthropometry?
title_short Can a spontaneous smile invalidate facial identification by photo-anthropometry?
title_sort can a spontaneous smile invalidate facial identification by photo-anthropometry?
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8479441/
https://www.ncbi.nlm.nih.gov/pubmed/34621655
http://dx.doi.org/10.5624/isd.20210002
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