论文信息 - Advanced iterative algorithm for phase extraction of randomly phase-shifted interferograms.

Advanced iterative algorithm for phase extraction of randomly phase-shifted interferograms.

An advanced random phase-shifting algorithm to extract phase distributions from randomly phase-shifted interferograms is proposed. The algorithm is based on a least-squares iterative procedure, but it copes with the limitation of the existing iterative algorithms by separating a frame-to-frame iteration from a pixel-to-pixel iteration. The algorithm provides stable convergence and accurate phase extraction with as few as three interferograms, even when the phase shifts are completely random. The algorithm is simple, fast, and fully automatic. A computer simulation is conducted to prove the concept.

Bongtae Han | Zhaoyang Wang | Zhaoyang Wang | B. Han

[1] Paul Taylor,et al. Multiphase fringe analysis with unknown phase shifts , 1994 .

[2] Katsuyuki Okada,et al. Simultaneous calculation of phase distribution and scanning phase shift in phase shifting interferometry , 1991 .

[3] Seung-Woo Kim,et al. Accelerated phase-measuring algorithm of least squares for phase-shifting interferometry , 1997 .

[4] Mingyi Chen,et al. General phase-stepping algorithm with automatic calibration of phase steps , 1999 .

[5] John E. Greivenkamp,et al. Generalized Data Reduction For Heterodyne Interferometry , 1984 .

[6] K Larkin,et al. A self-calibrating phase-shifting algorithm based on the natural demodulation of two-dimensional fringe patterns. , 2001, Optics express.

[7] S. W. Kim,et al. Numerical correction of reference phases in phase-shifting interferometry by iterative least-squares fitting. , 1994, Applied optics.