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Peer-reviewedCC BYat - Automatisierungstechnik

Automated photogrammetric close-range imaging of small invertebrates using acoustic levitation

  • Nathalie Klug1
  • Markus Krämer1
  • Fahri Mazrek1
  • Lorenz Wührl1
  • Hossein Shirali1
  • Rudolf Meier2,3
  • Christian Pylatiuk1
  1. 1Institute for Automation and Applied Informatics, Karlsruhe Institute of Technology , Hermann-von-Helmholtz-Platz 1, Eggenstein-Leopoldshafen, 76344 , Baden-Württemberg , Germany
  2. 2Center for Integrative Biodiversity Discovery, Leibniz Institute for Evolution and Biodiversity Science, Museum für Naturkunde , Invalidenstraße 43, 10115 , Berlin , Germany
  3. 3Institute for Biology, Humboldt University Berlin , Unter den Linden 6, 10117 , Berlin , Germany
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Abstract

Photogrammetry is gaining popularity in biodiversity research as it provides multiple views of the same specimen. However, handling the small specimens often requires fixing them with pins to position them in front of a camera, which can damage them. Acoustic levitation offers a solution by enabling lightweight objects to be suspended in air without physical contact. We demonstrate how small insects can be imaged from different perspectives using acoustic levitation to position and rotate them in mid-air. As opposed to other levitation systems with rotation control, prior knowledge of the geometry of the levitated object is not required. This way, automated multi-view imaging of insects with various morphologies is possible. To show the images are suitable to create a 3D representation, an image set is reconstructed in the 3D space using neural radiance fields (NeRF).

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Cite

BibTeXRIS
BibTeX
@article{klug2026automated,
  title = {{Automated photogrammetric close-range imaging of small invertebrates using acoustic levitation}},
  author = {Nathalie Klug and Markus Krämer and Fahri Mazrek and Lorenz Wührl and Hossein Shirali and Rudolf Meier and Christian Pylatiuk},
  journal = {at - Automatisierungstechnik},
  year = {2026},
  month = jul,
  doi = {10.1515/auto-2025-0139},
  url = {https://doi.org/10.1515/auto-2025-0139},
  note = {CC BY},
}
RIS
TY  - JOUR
TI  - Automated photogrammetric close-range imaging of small invertebrates using acoustic levitation
AU  - Nathalie Klug
AU  - Markus Krämer
AU  - Fahri Mazrek
AU  - Lorenz Wührl
AU  - Hossein Shirali
AU  - Rudolf Meier
AU  - Christian Pylatiuk
PY  - 2026
DA  - 2026/07/01
JO  - at - Automatisierungstechnik
DO  - 10.1515/auto-2025-0139
UR  - https://doi.org/10.1515/auto-2025-0139
AB  - Photogrammetry is gaining popularity in biodiversity research as it provides multiple views of the same specimen. However, handling the small specimens often requires fixing them with pins to position them in front of a camera, which can damage them. Acoustic levitation offers a solution by enabling lightweight objects to be suspended in air without physical contact. We demonstrate how small insects can be imaged from different perspectives using acoustic levitation to position and rotate them in mid-air. As opposed to other levitation systems with rotation control, prior knowledge of the geometry of the levitated object is not required. This way, automated multi-view imaging of insects with various morphologies is possible. To show the images are suitable to create a 3D representation, an image set is reconstructed in the 3D space using neural radiance fields (NeRF).
SN  - 0178-2312
SN  - 2196-677X
ER  -