Abstract

We have developed what we believe is a new technique for obtaining a whole-field image representing the deforming amounts of a diffuse object. The object is supposedly continuously deforming and does not stop deforming during the measurement. This technique uses arccosine operations to extract the absolute, not signed, value of the phase. We assume that a right-phase change retains almost the same value in a small local area. This retention determines the sign of the phase and consequently the value of the phase change. The deformation phase during any term of the deforming process is shown as a map through the temporal-phase unwrapping of the calculated phase.

© 2001 Optical Society of America

Deformation measurement with object-induced dynamic phase shifting

Xavier Colonna de Lega and Pierre Jacquot
Appl. Opt. 35(25) 5115-5121 (1996)

Speckle interferometry with temporal phase evaluation for measuring large-object deformation

C. Joenathan, B. Franze, P. Haible, and H. J. Tiziani
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Speckle interferometry: three-dimensional deformation field measurement with a single interferogram

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Phase evaluation of speckle patterns during continuous deformation by use of phase-shifting speckle interferometry

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Pulsed digital holographic interferometry for dynamic measurement of rotating objects with an optical derotator

Carlos Pérez-López, Fernando Mendoza Santoyo, Giancarlo Pedrini, Staffan Schedin, and Hans J. Tiziani
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