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Evaluation of surface acoustic waves on the human skin using quasi-time-averaged digital Fresnel holograms |
Applied Optics, Vol. 52, Issue 1, pp. A136-A146 (2013)
http://dx.doi.org/10.1364/AO.52.00A136
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Abstract
This paper proposes a first attempt to visualize and analyze the vibrations induced by a bone-conduction device and propagating at the surface of the skin of a human face. The method is based on a new approach in a so-called quasi-time-averaging regime, resulting in the retrieval of the vibration amplitude and phase from a sequence of digital Fresnel holograms recorded with a high image rate. The design of the algorithm depends on the ratio between the exposure time and the vibration period. The results show the propagation of vibrations at the skin surface, and quantitative analysis is achieved by the proposed approach.
© 2012 Optical Society of America
OCIS Codes
(090.0090) Holography : Holography
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology
(120.7280) Instrumentation, measurement, and metrology : Vibration analysis
(280.0280) Remote sensing and sensors : Remote sensing and sensors
(280.7250) Remote sensing and sensors : Velocimetry
(090.1995) Holography : Digital holography
History
Original Manuscript: July 26, 2012
Revised Manuscript: October 11, 2012
Manuscript Accepted: October 11, 2012
Published: November 13, 2012
Virtual Issues
Vol. 8, Iss. 2 Virtual Journal for Biomedical Optics
Citation
Mathieu Leclercq, Mayssa Karray, Vincent Isnard, François Gautier, and Pascal Picart, "Evaluation of surface acoustic waves on the human skin using quasi-time-averaged digital Fresnel holograms," Appl. Opt. 52, A136-A146 (2013)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=ao-52-1-A136
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