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Proceedings Paper

Errors in two-directional spatial-carrier phase shifting method for closed fringe patterns analysis
Author(s): Maria Pirga; Malgorzata Kujawinska
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Paper 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.

Paper Details

Date Published: 17 July 1996
PDF: 12 pages
Proc. SPIE 2860, Laser Interferometry VIII: Techniques and Analysis, (17 July 1996); doi: 10.1117/12.276338
Show Author Affiliations
Maria Pirga, Warsaw Univ. of Technology (Poland)
Malgorzata Kujawinska, Warsaw Univ. of Technology (Poland)


Published in SPIE Proceedings Vol. 2860:
Laser Interferometry VIII: Techniques and Analysis
Malgorzata Kujawinska; Ryszard J. Pryputniewicz; Mitsuo Takeda, Editor(s)

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