Journal
OPTICS LETTERS
Volume 37, Issue 20, Pages 4278-4280Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.37.004278
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Funding
- Swiss National Science Foundation [200020-131900]
- Swiss National Science Foundation (SNF) [200020_131900] Funding Source: Swiss National Science Foundation (SNF)
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The Letter proposes a method for phase estimation from a fringe pattern. The proposed method relies on a parametric approach where the phase is locally approximated as a two-dimensional (2D) polynomial, with the ensuing polynomial coefficients as the respective parameters. These coefficients are then estimated using the phase differencing operator. Because of the 2D formulation, the proposed method simultaneously analyzes signal samples along the horizontal and vertical dimensions, which enables robust estimation in the presence of noise. In addition, the method directly provides the desired phase without the requirement of complex unwrapping algorithms. Simulation and experimental results are presented to validate the method's potential. (C) 2012 Optical Society of America
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