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Protocol for 3D photogrammetry and morphological digitization of complex skulls.

Naomi De Leo1, Claudio Chimenti1, Luigi Maiorano1

  • 1Department of Biology and Biotechnologies "Charles Darwin", Sapienza University of Rome, Rome, Italy.

STAR Protocols
|January 18, 2025
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Summary

This study introduces a 3D photogrammetry protocol for digitizing complex skulls, enabling detailed morphological analysis. The method ensures high-quality 3D models for scientific research.

Keywords:
bioinformaticsenvironmental sciencesevolutionary biology

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Area of Science:

  • Paleontology
  • Zoology
  • Digital Morphology

Background:

  • Digitizing complex biological specimens, such as skulls with cranial appendages, presents significant challenges for traditional 3D reconstruction.
  • Accurate geometric morphometric analyses require high-fidelity digital models of anatomical structures.

Purpose of the Study:

  • To present a standardized protocol for 3D photogrammetry and morphological digitization of diverse skull types.
  • To enable the creation of high-quality 3D digital models for complex specimens, including those with tusks, antlers, and horns.
  • To facilitate the extraction of precise morphological data for geometric morphometric studies.

Main Methods:

  • Detailed procedures for specimen preparation and optimal camera and lighting setups for image acquisition.
  • Image processing techniques to generate accurate and high-resolution 3D skull models.
  • Methodology for extracting quantitative morphological data from the 3D models.

Main Results:

  • Successful generation of high-quality 3D photogrammetry models for complex skulls.
  • Demonstration of the protocol's applicability to specimens with challenging features like tusks, antlers, and horns.
  • Validation of the extracted morphological data for geometric morphometric analyses.

Conclusions:

  • The presented 3D photogrammetry protocol offers a robust and accessible method for the digital preservation and analysis of skull morphology.
  • This technique enhances the study of anatomical variation and evolutionary patterns in vertebrates.
  • The protocol supports advancements in digital morphology and comparative anatomy research.