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Sinusoidal least-squares fitting for temporal fringe pattern analysis

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2002-11
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Taylor and Francis Ltd.
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A sinusoidal least-squares fitting algorithm (SLSF) is applied to temporal evaluation of fringe patterns. The least-squares fitting of a sine function directly with the irradiance fluctuations due to a linear sensitivity variation of the optical set-up avoids the problems inherent to Fourier analysis. Experiments show that the proposed method has a better noise immunity than the temporal Fourier method. An application of this technique to Deflectometry is also presented.
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©2002 Taylor and Francis Ltd.
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