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Proceedings Paper

Continuous Local Basis Functions For Interferometric Reconstruction Of Continuous Phase Objects
Author(s): Hongwei Sun; Soyoung Stephen Cha
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Paper Abstract

Continuous local basis function (CLBF) methods have been formulated for three-dimensional reconstruction of phase objects from multidirectional interferometric data. In a method, identical CLBFs, having support only in their local domains, are employed. Three methods tested include the polynomial, the convoluted Hanning function, and the cubic B-spline. Unlike the conventional methods, they represent higher-order approximations. The polynomial and convoluted Hanning function allow relatively simple expressions. All the CLBFs can fit a constant function with proper overlaps. The methods are evaluated through computer simulation of experiments. They demonstrate comparable power of approximation. The CLBF methods show better reconstruction accuracy than the traditional methods as noise level or degree of limited data (incomplete projection and limited view angle) increases.

Paper Details

Date Published: 25 April 1990
PDF: 10 pages
Proc. SPIE 1162, Laser Interferometry: Quantitative Analysis of Interferograms: Third in a Series, (25 April 1990); doi: 10.1117/12.962757
Show Author Affiliations
Hongwei Sun, The University of Illinois at Chicago (United States)
Soyoung Stephen Cha, The University of Illinois at Chicago (United States)


Published in SPIE Proceedings Vol. 1162:
Laser Interferometry: Quantitative Analysis of Interferograms: Third in a Series
Ryszard J. Pryputniewicz, Editor(s)

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