Biomedical Imaging GroupSTI
English only   BIG > Publications > Phase-Shifting Interferometry

 Home Page
 News & Events
 Tutorials and Reviews
 Download Algorithms

 All BibTeX References

An Integral Approach to Phase Shifting Interferometry Using a Super-Resolution Frequency Estimation Method

A. Patil, R.V.V.L. Langoju, P. Rastogi

Optics Express, vol. 12, no. 20, pp. 4681-4697, October 4, 2004.

The objective of this paper is to describe an integral approach—based on the use of a super-resolution frequency estimation method—to phase shifting interferometry, starting from phase step estimation to phase evaluation at each point on the object surface. Denoising is also taken into consideration for the case of a signal contaminated with white Gaussian noise. The other significant features of the proposal are that it caters to the presence of multiple PZTs in an optical configuration, is capable of determining the harmonic content in the signal and effectively eliminating their influence on measurement, is insensitive to errors arising from PZT miscalibration, is applicable to spherical beams, and is a robust performer even in the presence of white Gaussian intensity noise.

AUTHOR="Patil, A. and Langoju, R.V.V.L. and Rastogi, P.",
TITLE="An Integral Approach to Phase Shifting Interferometry Using a
        Super-Resolution Frequency Estimation Method",
JOURNAL="Optics Express",
month="October 4,",

© 2004 OSA. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from OSA.
This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder.