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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 40, Iss. 34 — Dec. 1, 2001
  • pp: 6187–6192

Deformation-Phase Measurement of Diffuse Objects That Have Started Nonrepeatable Dynamic Deformation

Masaaki Adachi, Jon N. Petzing, and David Kerr  »View Author Affiliations


Applied Optics, Vol. 40, Issue 34, pp. 6187-6192 (2001)
http://dx.doi.org/10.1364/AO.40.006187


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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

OCIS Codes
(120.4290) Instrumentation, measurement, and metrology : Nondestructive testing
(120.5050) Instrumentation, measurement, and metrology : Phase measurement
(120.6160) Instrumentation, measurement, and metrology : Speckle interferometry

Citation
Masaaki Adachi, Jon N. Petzing, and David Kerr, "Deformation-Phase Measurement of Diffuse Objects That Have Started Nonrepeatable Dynamic Deformation," Appl. Opt. 40, 6187-6192 (2001)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-40-34-6187


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