Timing-sync protocol for sensor networks
Proceedings of the 1st international conference on Embedded networked sensor systems
The flooding time synchronization protocol
SenSys '04 Proceedings of the 2nd international conference on Embedded networked sensor systems
Fine-grained network time synchronization using reference broadcasts
OSDI '02 Proceedings of the 5th symposium on Operating systems design and implementationCopyright restrictions prevent ACM from being able to make the PDFs for this conference available for downloading
Synchronous Image Acquisition based on Network Synchronization
CVPRW '06 Proceedings of the 2006 Conference on Computer Vision and Pattern Recognition Workshop
Illumination-based real-time contactless synchronization of high-speed vision sensors
ROBIO '09 Proceedings of the 2008 IEEE International Conference on Robotics and Biomimetics
Time synchronization in sensor networks: a survey
IEEE Network: The Magazine of Global Internetworking
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To acquire images of dynamic scenes from multiple points of view simultaneously, the acquisition time of vision sensors should be synchronized. In this paper, an advanced illumination-based synchronization method derived from the phase-locked loop (PLL) algorithm is proposed and evaluated. To remove the dependency of system behavior on the amplitude of the illumination, which can be affected by moving objects or the positional relation of the illumination and objects, the feedback amount of the PLL system is normalized per frame by the estimated amplitude of the reference signal to generate stable synchronization even in highly dynamic scenes. Both simulated results and real world experiments demonstrated successful synchronization that a 1,000-Hz frame rate vision sensor was successfully synchronized to both direct and indirect illumination with only 28-µs peak-to-peak jitters.