Fast phase recovery from a single closed-fringe pattern
JOSA A, Vol. 25, Issue 6, pp. 1361-1370 (2008)
http://dx.doi.org/10.1364/JOSAA.25.001361
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Abstract
A new framework for phase recovery from a single fringe pattern with closed fringes is proposed. Our algorithm constructs an unwrapped phase from previously computed phases with a simple open-fringe-analysis algorithm, twice applied for analyzing horizontal and vertical oriented fringes, respectively. That reduces the closed-fringe-analysis problem to that of choosing the better phase between the two oriented computed phases and then of estimating the local sign. By propagating the phase sign [and a tilewise constant (DC) term] by regions [here named tiles] instead of a pixelwise phase propagation, our analysis of closed-fringe patterns becomes more robust and faster. Additionally, we propose a multigrid refinement for improving the final computed phase.
© 2008 Optical Society of America
OCIS Codes
(100.3190) Image processing : Inverse problems
(120.2650) Instrumentation, measurement, and metrology : Fringe analysis
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(120.5050) Instrumentation, measurement, and metrology : Phase measurement
ToC Category:
Instrumentation, Measurement, and Metrology
History
Original Manuscript: October 31, 2007
Manuscript Accepted: March 10, 2008
Published: May 19, 2008
Citation
Oscar S. Dalmau-Cedeño, Mariano Rivera, and Ricardo Legarda-Saenz, "Fast phase recovery from a single closed-fringe pattern," J. Opt. Soc. Am. A 25, 1361-1370 (2008)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-25-6-1361
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