Share Email Print
cover

Optical Engineering

Filtering the complex field in phase shifting interferometry
Author(s): Kemao Qian; Hock Soon Seah; Anand Krishna Asundi
Format Member Price Non-Member Price
PDF $20.00 $25.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

A simple but effective filtering scheme in phase shifting interferometry is proposed. Conventionally, either the phase-shifted fringe patterns, or the resulting wrapped phase field, is chosen for filtering to remove noise. In this letter, we propose filtering the complex field resulting from the combination of the phase-shifted fringe patterns, as a third choice. The filtering can be realized by Fourier transform or windowed Fourier transform. Processing results of speckle fringes are given to show its effectiveness.

Paper Details

Date Published: 1 October 2003
PDF: 2 pages
Opt. Eng. 42(10) doi: 10.1117/1.1609457
Published in: Optical Engineering Volume 42, Issue 10
Show Author Affiliations
Kemao Qian, Nanyang Technological Univ. (Singapore)
Hock Soon Seah, Nanyang Technological Univ. (Singapore)
Anand Krishna Asundi, Nanyang Technological Univ. (Singapore)


© SPIE. Terms of Use
Back to Top