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Proceedings Paper

Two-dimensional nonlinear regression for interferogram analysis
Author(s): Enxi Yu; Soyoung Stephen Cha
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Paper Abstract

A two-dimensional nonlinear regression method for accurate analysis of single-frame interferograms has been developed and tested. Similar to a simple algorithm for one-dimensional regression, analytical expressions of individual terms in a nonlinear intensity model are estimated through an iterative procedure. Computer simulation of experiments and real interferogram analysis show stable convergence and accurate phase extraction of the method. The method also works well under relatively high-level noise and broken fringe interferograms.

Paper Details

Date Published: 29 September 1995
PDF: 10 pages
Proc. SPIE 2546, Optical Techniques in Fluid, Thermal, and Combustion Flow, (29 September 1995); doi: 10.1117/12.221534
Show Author Affiliations
Enxi Yu, Univ. of Illinois/Chicago (United States)
Soyoung Stephen Cha, Univ. of Illinois/Chicago (United States)


Published in SPIE Proceedings Vol. 2546:
Optical Techniques in Fluid, Thermal, and Combustion Flow
Soyoung Stephen Cha; James D. Trolinger, Editor(s)

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