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Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 51, Iss. 9 — Mar. 20, 2012
  • pp: 1431–1435

Vibration detection using focus analysis of interferograms

Jae Lord Dexter C. Filipinas and Percival F. Almoro  »View Author Affiliations

Applied Optics, Vol. 51, Issue 9, pp. 1431-1435 (2012)

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This paper proposed an automated technique for vibration detection using statistical focus measure to evaluate interferogram contrast. An interferogram sequence from a Mach-Zehnder interferometer setup is recorded (frame rate: 24 fps) and the gray-level variance (GLVA) is plotted versus time. Occurrence of induced vibration in the setup causes a decrease in the interferogram contrast which, in turn, manifests as an evident rapid drop in the variance plot. The technique is demonstrated experimentally using periodic microvibrations (frequency range, 6Hz) and aperiodic disturbances.

© 2012 Optical Society of America

OCIS Codes
(040.7290) Detectors : Video
(100.2960) Image processing : Image analysis
(100.5010) Image processing : Pattern recognition
(120.2650) Instrumentation, measurement, and metrology : Fringe analysis
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(120.7280) Instrumentation, measurement, and metrology : Vibration analysis

ToC Category:

Original Manuscript: November 21, 2011
Revised Manuscript: January 9, 2012
Manuscript Accepted: January 9, 2012
Published: March 20, 2012

Jae Lord Dexter C. Filipinas and Percival F. Almoro, "Vibration detection using focus analysis of interferograms," Appl. Opt. 51, 1431-1435 (2012)

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