G Rajshekhar et al 2009 J. Opt. A: Pure Appl. Opt. 11 125402 doi:10.1088/1464-4258/11/12/125402
G Rajshekhar, Sai Siva Gorthi and Pramod Rastogi
Show affiliationsThis paper proposes a polynomial Wigner–Ville distribution-based method to directly estimate phase derivative from a single fringe pattern. In the proposed method, we evaluate the polynomial Wigner–Ville distribution along each row/column of the given fringe pattern. The peak of the polynomial Wigner–Ville distribution is used as the phase derivative estimator. To improve the robustness of the distribution against the artifacts or interference terms, a windowed form of the polynomial Wigner–Ville distribution is used. Simulation and experimental results are presented which validate the method's applicability for direct phase derivative estimation.
02.50.Ng Distribution theory and Monte Carlo studies
Issue 12 (December 2009)
Received 28 July 2009, accepted for publication 27 August 2009
Published 21 September 2009
G Rajshekhar et al 2009 J. Opt. A: Pure Appl. Opt. 11 125402
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