GLOBAL AND LOCAL PHASE-UNWRAPPING TECHNIQUES - A COMPARISON

Authors
FORNARO G FRANCESCHETTI G LANARI R SANSOSTI E TESAURO M
Citation
G. Fornaro et al., GLOBAL AND LOCAL PHASE-UNWRAPPING TECHNIQUES - A COMPARISON, Journal of the Optical Society of America. A, Optics, image science,and vision., 14(10), 1997, pp. 2702-2708
Citations number
20
Categorie Soggetti
Optics
Journal title
Journal of the Optical Society of America. A, Optics, image science,and vision. → ACNP
ISSN journal
10847529
Volume
14
Issue
10
Year of publication
1997
Pages
2702 - 2708
Database
ISI
SICI code
1084-7529(1997)14:10<2702:GALPT->2.0.ZU;2-B
Abstract
We investigate the relationship between local and global phase-unwrapp ing techniques. We demonstrate that both algorithms are based on line integration of an estimate of the phase gradient: the integral along a single path, and the latter averages integrals along many paths. tend ed to the weighted case. We also give an interpretation of the errors caused by an incorrect phase-gradient estimate in terms of path-follow ing integrals. (C) 1997 Optical Society of America.