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- W2060335959 abstract "In this paper, we analyze the phase-shifting algorithm by utilizing Fourier transformation theory. In fact, the phase-shifting algorithm is corresponding to a discrete Fourier transformation (DFT), the image capturing operation is a temporal sampling procedure, and the purpose of phase-shifting technique is to retrieve the phase of one frequency component. According to the sampling theory, if the number of phase steps is too less that means a too low sampling frequency is adopted, the frequency of interest will be mixed with high order spectra. By mathematical analysis, the relationship between the number of phase steps and the effect of harmonics is deduced, and the criterion of selecting phase step number is discussed. The applications of the Fourier analysis in digital fringe projection profilometry are described." @default.
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- W2060335959 date "2004-01-05" @default.
- W2060335959 modified "2023-10-18" @default.
- W2060335959 title "Fourier analysis of the sampling characteristics of the phase-shifting algorithm" @default.
- W2060335959 doi "https://doi.org/10.1117/12.505277" @default.
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