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Authors: Tomislav Pribanic ; Adam Hedi and Vedran Gracanin

Affiliation: University of Zagreb, Croatia

Keyword(s): Camera Synchronization, 3D Reconstruction, Pendulum.

Related Ontology Subjects/Areas/Topics: Applications ; Computer Vision, Visualization and Computer Graphics ; Geometry and Modeling ; Image-Based Modeling ; Modeling and Algorithms ; Pattern Recognition ; Physics-Based Modeling ; Software Engineering

Abstract: The goal of this paper to present a general method to synchronize cameras from the image modelled harmonic oscillations, which are in this work produced by a simple pendulum. The method essence is to recover from camera images a sine trajectory of a small ball, attached to 45cm string and suspended from a pivot so that it can swing freely. From this trajectory and given an equilibrium position of ball in space, for each camera a time is estimated needed to reach this equilibrium position from a neighboring frame during a ball swing. The difference in those times for two cameras yields a subframe time difference between cameras. The subframe time differences between cameras were computed using the proposed method and they were compared against the ground truth measurement values given by a camera manufacturer. Linear correlation coefficient is 0.996, while the mean absolute difference between two methods measurements is 3.5ms.

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Paper citation in several formats:
Pribanic, T.; Hedi, A. and Gracanin, V. (2012). HARMONIC OSCILLATIONS MODELLING FOR THE PURPOSE OF CAMERA SYNCHRONIZATION. In Proceedings of the International Conference on Computer Graphics Theory and Applications and International Conference on Information Visualization Theory and Applications (VISIGRAPP 2012) - GRAPP; ISBN 978-989-8565-02-0; ISSN 2184-4321, SciTePress, pages 202-205. DOI: 10.5220/0003927702020205

@conference{grapp12,
author={Tomislav Pribanic. and Adam Hedi. and Vedran Gracanin.},
title={HARMONIC OSCILLATIONS MODELLING FOR THE PURPOSE OF CAMERA SYNCHRONIZATION},
booktitle={Proceedings of the International Conference on Computer Graphics Theory and Applications and International Conference on Information Visualization Theory and Applications (VISIGRAPP 2012) - GRAPP},
year={2012},
pages={202-205},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0003927702020205},
isbn={978-989-8565-02-0},
issn={2184-4321},
}

TY - CONF

JO - Proceedings of the International Conference on Computer Graphics Theory and Applications and International Conference on Information Visualization Theory and Applications (VISIGRAPP 2012) - GRAPP
TI - HARMONIC OSCILLATIONS MODELLING FOR THE PURPOSE OF CAMERA SYNCHRONIZATION
SN - 978-989-8565-02-0
IS - 2184-4321
AU - Pribanic, T.
AU - Hedi, A.
AU - Gracanin, V.
PY - 2012
SP - 202
EP - 205
DO - 10.5220/0003927702020205
PB - SciTePress

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