Errors in two-directional spatial-carrier phase-shifting method

Maria Pirga; Malgorzata Kujawinska

doi:10.1117/12.211856

14 June 1995 Errors in two-directional spatial-carrier phase-shifting method

Maria Pirga, Malgorzata Kujawinska

Proceedings Volume 2544, Interferometry VII: Techniques and Analysis; (1995) https://doi.org/10.1117/12.211856
Event: SPIE's 1995 International Symposium on Optical Science, Engineering, and Instrumentation, 1995, San Diego, CA, United States

Abstract

Two-directional spatial-carrier phase shifting method was proposed for analysis of crossed and closed fringe patterns. This paper focuses on the major limitations for phase calculation by the standard 5-point algorithm used sequentially for x and y sampling directions. These limitations include the influence of improper carrier frequencies, nonequally spaced fringes, nonlinearities in the detection system, variations in the contrast and background intensity functions and interaction between the component fringe patterns. Computer simulation reveals the character and magnitude of these major errors.

Citation Download Citation

Maria Pirga and Malgorzata Kujawinska "Errors in two-directional spatial-carrier phase-shifting method", Proc. SPIE 2544, Interferometry VII: Techniques and Analysis, (14 June 1995); https://doi.org/10.1117/12.211856

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