Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Unwrapping of interferometric phase-fringe maps by the discrete cosine transform

Not Accessible

Your library or personal account may give you access

Abstract

Current whole-field interferometric techniques yield a phase distribution in modulo 2π. Removal of the resulting cyclic discontinuities is a process known as unwrapping, which must be performed before the data can be interpreted. We investigate an iterative unwrapping technique recently published by Ghiglia and Romero [J. Opt. Soc. Am. A 11, 107 (1994)], which is based on least-squares minimization, obtained by the discrete cosine transform. We apply this technique to remove phase wraps from electronic speckle pattern interferometry data, using modest personal computer hardware. The algorithm is shown to be fast, easy to implement, robust in the presence of noise, and able to handle phase inconsistencies without propagating local errors.

© 1996 Optical Society of America

Full Article  |  PDF Article
More Like This
Unwrapping of digital speckle-pattern interferometry phase maps by use of a minimum L0-norm algorithm

Pablo D. Ruiz, Guillermo H. Kaufmann, and Gustavo E. Galizzi
Appl. Opt. 37(32) 7632-7644 (1998)

Path-independent phase unwrapping of subsampled phase maps

Manuel Servin, Daniel Malacara, and F. J. Cuevas
Appl. Opt. 35(10) 1643-1649 (1996)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (5)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Tables (1)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (11)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved