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Sensors 2010, 10(6), 5530-5547; doi:10.3390/s100605530

Illumination-Based Synchronization of High-Speed Vision Sensors

Department of System Information Sciences, Graduate School of Information Sciences, Tohoku University, 6-6-01 Aramaki Aza Aoba, Aoba-ku, Sendai 980-8579, Japan
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Received: 13 April 2010 / Revised: 5 May 2010 / Accepted: 25 May 2010 / Published: 2 June 2010
(This article belongs to the Section Chemical Sensors)

Abstract

To acquire images of dynamic scenes from multiple points of view simultaneously, the acquisition time of vision sensors should be synchronized. This paper describes an illumination-based synchronization method derived from the phase-locked loop (PLL) algorithm. Incident light to a vision sensor from an intensity-modulated illumination source serves as the reference signal for synchronization. Analog and digital computation within the vision sensor forms a PLL to regulate the output signal, which corresponds to the vision frame timing, to be synchronized with the reference. Simulated and experimental results show that a 1,000 Hz frame rate vision sensor was successfully synchronized with 32 μs jitters.
Keywords: camera synchronization; phase-locked loop; visible light communication camera synchronization; phase-locked loop; visible light communication
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This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Hou, L.; Kagami, S.; Hashimoto, K. Illumination-Based Synchronization of High-Speed Vision Sensors. Sensors 2010, 10, 5530-5547.

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