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Proceedings Paper

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

Paper Details

Date Published: 14 June 1995
PDF: 10 pages
Proc. SPIE 2544, Interferometry VII: Techniques and Analysis, (14 June 1995); doi: 10.1117/12.211856
Show Author Affiliations
Maria Pirga, Warsaw Univ. of Technology (Poland)
Malgorzata Kujawinska, Warsaw Univ. of Technology (Poland)

Published in SPIE Proceedings Vol. 2544:
Interferometry VII: Techniques and Analysis
Malgorzata Kujawinska; Ryszard J. Pryputniewicz; Mitsuo Takeda, Editor(s)

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