TY - GEN
T1 - An advanced algorithm for illumination-based synchronization of high-speed vision sensors in dynamic scenes
AU - Hou, Lei
AU - Kagami, Shingo
AU - Hashimoto, Koichi
N1 - Copyright:
Copyright 2011 Elsevier B.V., All rights reserved.
PY - 2010
Y1 - 2010
N2 - 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.
AB - 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.
KW - Camera Synchronization
KW - Intensity Modulation
KW - Phase-locked Loop
KW - Quadrature Detection
KW - Robot Vision
KW - Signal Normalization
KW - Visible Light Communication
KW - Vision Chip
KW - Visual Servo
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U2 - 10.1007/978-3-642-16587-0_35
DO - 10.1007/978-3-642-16587-0_35
M3 - Conference contribution
AN - SCOPUS:77958002240
SN - 3642165869
SN - 9783642165863
T3 - Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
SP - 378
EP - 389
BT - Intelligent Robotics and Applications - Third International Conference, ICIRA 2010, Proceedings
T2 - 3rd International Conference on Intelligent Robotics and Applications, ICIRA 2010
Y2 - 10 November 2010 through 12 November 2010
ER -