CoMo: A novel co-moving 3D camera system
Andrea Cavagna, Xiao Feng, Stefania Melillo, Leonardo Parisi, Lorena, Postiglione, Pablo Villegas

TL;DR
This paper introduces CoMo, a co-moving 3D camera system with synchronized high-speed cameras and rotational stages, enabling long-duration tracking of bird flocks with high accuracy and robust calibration methods.
Contribution
The work presents a novel co-moving camera system and a calibration approach that improves long-term 3D trajectory reconstruction of moving targets.
Findings
Achieves approximately 1% relative error in 3D distance measurements.
Demonstrates robustness and accuracy through 3D tests.
Provides a calibration method adaptable to dynamic external parameters.
Abstract
Motivated by the theoretical interest in reconstructing long 3D trajectories of individual birds in large flocks, we developed CoMo, a co-moving camera system of two synchronized high speed cameras coupled with rotational stages, which allow us to dynamically follow the motion of a target flock. With the rotation of the cameras we overcome the limitations of standard static systems that restrict the duration of the collected data to the short interval of time in which targets are in the cameras common field of view, but at the same time we change in time the external parameters of the system, which have then to be calibrated frame-by-frame. We address the calibration of the external parameters measuring the position of the cameras and their three angles of yaw, pitch and roll in the system "home" configuration (rotational stage at an angle equal to 0deg and combining this static…
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