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Title
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Modified temporal-phase-unwrapping method for measuring in real time the out-of-plane displacements of the tympanic membrane of Mongolian Gerbil
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Author
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Abstract
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| A technique for measuring in real-time continuous out-of-plane displacements of delicate objects is proposed, and demonstrated on the tympanic membrane of Mongolian Gerbil. The technique is based on the combination of two methods: the spatial phase shifting (SPS) and the modified temporal phase unwrapping (TPU). The combination allows to obtain, in several steps, the phase values of the points that undergo out-of-plane displacement as the object is deformed. The technique reduces the frame acquisition time of the standard TPU used in moiré interferometry by a factor of 4, which is important to diminish post-mortem artifacts during in-vitro experiments and to reduce motion artifacts in in-vivo tests. The proposed technique is robust against problems associated with the temporal phase-shifting method, such as nonlinear phase shift and noise. The advantages and disadvantages are discussed. |
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Language
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English
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Source (journal)
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Optik: Zeitschrift für Licht- und Elektronenoptik. - Stuttgart
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Publication
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Stuttgart
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2008
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ISSN
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0030-4026
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DOI
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10.1016/J.IJLEO.2007.05.005
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Volume/pages
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119
:16
(2008)
, p. 783-787
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ISI
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000261699200006
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Full text (Publisher's DOI)
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