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Impact of 3D surface scanning protocols on the Os coxae digital data: implications for sex and age-at-death assessment
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Orientador(es)
Resumo(s)
The 3D imaging technologies have become of paramount importance for example in disciplines such as forensic
anthropology and bioarchaeology, where they are being used more and more frequently. There are several new
possibilities that they offer; for instance, the easier and faster sharing of data among institutions, the possibility
of permanent documentation, or new opportunities of data analysis. An important requirement, however, is
whether the data obtained from different scanning devices are comparable and whether the possible varying
outputs could affect further analyses, such as the estimation of the biological profile. Therefore, we aimed to
investigate two important questions: (1) whether 3D models acquired by two different scanning technologies
(structured light and laser) are comparable and (2) whether the scanning equipment has an effect on the anthropological analyses, such as age-at-death estimation and sex assessment.
3D models of ossa coxa (n = 29) were acquired by laser (NextEngine) and structured light (HP 3D Structured
Light Scanner PRO 2) scanners. The resulting 3D models from both scanners were subjected to age-at-death
analyses (via the quantitative method of Stoyanova et al., 2017) and sex analyses (via Diagnose Sexuelle
Probabiliste 2 of Brůžek et al., 2017). Furthermore, high quality scans of a small sample (n = 5) of pubic
symphyseal surfaces with the RedLux Profiler device were acquired as reference surfaces to which the outputs
from both scanners were compared. Small deviations between surfaces were more evident in more rugged
surfaces (in areas of depression and protrusion). Even though small differences from the reference surfaces were
found, they did not have a significant effect on the age and sex estimates. It never resulted in the opposite sex
assignment, and no significant differences were observed between age estimates (with the exception of those
with the TPS/BE model).
Descrição
Palavras-chave
Outline analysis Laser scanner Accuracy Reproducibility Reconstruction Repeatability Reliability Variability Validation Morphology Laser scanning Structured light technology RedLux profiler Biological profile Age and sex estimation Os coxae
Contexto Educativo
Citação
Editora
Elsevier