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Applied Optics

Applied Optics


  • Vol. 42, Iss. 17 — Jun. 10, 2003
  • pp: 3373–3378

Least-squares modal estimation of wrapped phases: application to phase unwrapping

Justo Arines  »View Author Affiliations

Applied Optics, Vol. 42, Issue 17, pp. 3373-3378 (2003)

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Phase unwrapping continues to be an important step in those techniques that obtain the phase from Fourier transforms. We propose a fast two-dimensional phase-unwrapping algorithm that has been specially designed to be used as part of an iterative algorithm. It can be used also as a final step of a phase retrieval process with other unwrapping techniques. The algorithm consists of a modal least-squares estimation of the wrapped phase by using as inputs to the linear estimation the derivative of the wrapped phase. A theoretical description of the method, simulations, and experimental validations are presented.

© 2003 Optical Society of America

OCIS Codes
(100.5070) Image processing : Phase retrieval
(120.2650) Instrumentation, measurement, and metrology : Fringe analysis
(120.5050) Instrumentation, measurement, and metrology : Phase measurement

Original Manuscript: October 2, 2002
Revised Manuscript: February 7, 2003
Published: June 10, 2003

Justo Arines, "Least-squares modal estimation of wrapped phases: application to phase unwrapping," Appl. Opt. 42, 3373-3378 (2003)

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