Abstract

A modified Fourier transform method for interferogram fringe pattern analysis is proposed. While it retains most of the advantages of the Fourier transform method, the new method overcomes some drawbacks of the previous method. It eliminates the assumptions of slowly varying phase variation in the test section and the constant spatial carrier frequency. It also extends the frequency bandwidth and avoids phase distortion caused by discreteness of the sampling frequency. Both numerical simulation and experimental examination are performed to evaluate the performance of the method.

© 1997 Optical Society of America

Windowed Fourier transform for fringe pattern analysis

Qian Kemao
Appl. Opt. 43(13) 2695-2702 (2004)

Data-dependent-systems and Fourier-transform methods for single-interferogram analysis

S. M. Pandit and N. Jordache
Appl. Opt. 34(26) 5945-5951 (1995)

Fourier-transform method of data compression and temporal fringe pattern analysis

Tuck Wah Ng and Kar Tien Ang
Appl. Opt. 44(33) 7043-7049 (2005)

Coordinate-transform technique for closed-fringe analysis by the Fourier-transform method

Zongtao Ge, Fumio Kobayashi, Shinichi Matsuda, and Mitsuo Takeda
Appl. Opt. 40(10) 1649-1657 (2001)

Two-dimensional Fourier-transform techniques for the analysis of hook interferograms

H. J. Kim and B. W. James
Appl. Opt. 36(6) 1352-1356 (1997)