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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 36, Iss. 21 — Nov. 1, 2011
  • pp: 4281–4283

Mode-shape measurement of piezoelectric plate using temporal speckle pattern interferometry and temporal standard deviation

Ching-Yuan Chang and Chien-Ching Ma  »View Author Affiliations

Optics Letters, Vol. 36, Issue 21, pp. 4281-4283 (2011)

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This study proposes an image processing method to improve the quality of interference fringes in mode-shape measurement using temporal speckle pattern interferometry. A vibrating piezoelectric plate at resonance was investigated, and the full-field optical information was saved as a sequence of images. According to derived statistical properties, an algorithm was developed to remove noise from both the background and disturbance, resulting in high-resolution images of excellent quality. In addition, the resonant frequency and mode shape obtained using the proposed algorithm demonstrate excellent agreement with theoretical results obtained by the finite element method.

© 2011 Optical Society of America

OCIS Codes
(100.2000) Image processing : Digital image processing
(100.2650) Image processing : Fringe analysis
(100.2980) Image processing : Image enhancement
(120.6160) Instrumentation, measurement, and metrology : Speckle interferometry
(120.7280) Instrumentation, measurement, and metrology : Vibration analysis
(100.3175) Image processing : Interferometric imaging

ToC Category:
Image Processing

Original Manuscript: August 31, 2011
Manuscript Accepted: September 21, 2011
Published: November 1, 2011

Ching-Yuan Chang and Chien-Ching Ma, "Mode-shape measurement of piezoelectric plate using temporal speckle pattern interferometry and temporal standard deviation," Opt. Lett. 36, 4281-4283 (2011)

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