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).

Department of Anthropology and Human Genetics Faculty of Science Charles University Viničná 7 Prague 128 43 Czech Republic

Department of Anthropology University of West Bohemia Plzeň 30614 Czech Republic

Department of Mechanics Biomechanics and Mechatronics Faculty of Mechanical Engineering CTU Prague Technická 4 Prague 166 07 Czech Republic

Interdisciplinary Center for Archaeology and Evolution of Human Behaviour Faculdade das Ciências Humanas e Sociais Universidade do Algarve Campus Gambelas 8005 139 Faro Portugal

Laboratoire PACEA UMR 5199 CNRS Université Bordeaux CS 50023 Pessac 33615 France

UMR 7268 ADES Aix Marseille University EFS CNRS Faculté de Médecine Secteur Nord 13344 Marseille Cedex 15 France

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