Errors in two-directional spatial-carrier phase shifting method for closed fringe patterns analysis

Maria Pirga; Malgorzata Kujawinska

doi:10.1117/12.276338

17 July 1996 Errors in two-directional spatial-carrier phase shifting method for closed fringe patterns analysis

Maria Pirga, Malgorzata Kujawinska

Proceedings Volume 2860, Laser Interferometry VIII: Techniques and Analysis; (1996) https://doi.org/10.1117/12.276338
Event: SPIE's 1996 International Symposium on Optical Science, Engineering, and Instrumentation, 1996, Denver, CO, United States

Abstract

Two-directional method was proposed for analysis of crossed or closed fringe paUerns. This paper focuses on the analysis of closed fringe pauern and the major limitations for the N-point algorithms (standard five-point, modified five- and threepoint algorithms).The limitations include the influence of the tilt of fringes, variations in the background intensity and contrast functions, the nonlinearities in a detection system, random noise. Computer simulation reveal the character and the magnitude of the major errors for all algorithms tested. The comparison of the results obtained is given and the advantages ofusing the modified five- and three-point algorithm are described.

Citation Download Citation

Maria Pirga and Malgorzata Kujawinska "Errors in two-directional spatial-carrier phase shifting method for closed fringe patterns analysis", Proc. SPIE 2860, Laser Interferometry VIII: Techniques and Analysis, (17 July 1996); https://doi.org/10.1117/12.276338

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