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Calibration-free 3D reconstruction of firefly trajectories from 360-degree cameras

View ORCID ProfileRaphaël Sarfati, Orit Peleg
doi: https://doi.org/10.1101/2021.04.07.438867
Raphaël Sarfati
1BioFrontiers Institute, University of Colorado Boulder, Boulder, CO, USA
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  • ORCID record for Raphaël Sarfati
Orit Peleg
1BioFrontiers Institute, University of Colorado Boulder, Boulder, CO, USA
2Santa Fe Institute, Sante Fe, NM, USA
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  • For correspondence: orit.peleg@colorado.edu
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Abstract

Over the past few decades, progress in animal tracking techniques, from large migrating mammals to swarming insects, has facilitated significant advances in ecology, behavioural biology, and conservation science. Recently, we developed a technique to record and track flashing fireflies in their natural habitat using pairs of 360-degree cameras. The method, which has the potential to help identify and monitor firefly populations worldwide, was successfully implemented in various natural swarms. However, camera calibration remained tedious and time-consuming. Here, we propose and implement an algorithm that calibrates the cameras directly from the data, requiring minimal user input. We explain the principles of the calibration-free algorithm, and demonstrate the ease and efficiency of its implementation. This method is relatively inexpensive, versatile, and well-suited for automatic processing and the collection of a large dataset of firefly trajectories across species and populations. This calibration-free method paves the way to citizen science efforts for monitoring and conservation of firefly populations.

Competing Interest Statement

The authors have declared no competing interest.

Copyright 
The copyright holder for this preprint is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under a CC-BY-NC-ND 4.0 International license.
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Posted April 09, 2021.
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Calibration-free 3D reconstruction of firefly trajectories from 360-degree cameras
Raphaël Sarfati, Orit Peleg
bioRxiv 2021.04.07.438867; doi: https://doi.org/10.1101/2021.04.07.438867
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Calibration-free 3D reconstruction of firefly trajectories from 360-degree cameras
Raphaël Sarfati, Orit Peleg
bioRxiv 2021.04.07.438867; doi: https://doi.org/10.1101/2021.04.07.438867

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