Effect of intensity-correlated error due to quantization and noise on phase-shifting method |
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Authors: | Bing Zhao |
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Institution: | Division of Photomechanics, Tong-ji University, Shanghai 200092, People's Republic of China |
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Abstract: | A method to investigate the effect of the interaction of the noise and the quantization on the computed phase in phase-shifting measurement (PSM) is proposed. The statistical relationship between the measured phase and the fringe intensity-correlated error is formulated for the standard N-sample algorithm. The phase error variance is evaluated following a nonlinear stochastic analysis. |
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