Abstract

We investigate the relationship between local and global phase-unwrapping techniques. We demonstrate that both algorithms are based on line integration of an estimate of the phase gradient: the former evaluates the integral along a single path, and the latter averages integrals along many paths. This analysis is extended to the weighted case. We also give an interpretation of the errors caused by an incorrect phase-gradient estimate in terms of path-following integrals.

© 1997 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Robust phase-unwrapping techniques: a comparison

Gianfranco Fornaro, Giorgio Franceschetti, Riccardo Lanari, and Eugenio Sansosti
J. Opt. Soc. Am. A 13(12) 2355-2366 (1996)

Absolute phase estimation: adaptive local denoising and global unwrapping

Jose Bioucas-Dias, Vladimir Katkovnik, Jaakko Astola, and Karen Egiazarian
Appl. Opt. 47(29) 5358-5369 (2008)

Least-mean-squares phase unwrapping by use of an incomplete set of residue branch cuts

Igor V. Lyuboshenko, Henri Maı̂tre, and Alain Maruani
Appl. Opt. 41(11) 2129-2148 (2002)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

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

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 OSA member, or as an authorized user of your institution.

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

Figures (7)

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

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

Equations (29)

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

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

Metrics

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

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