November 2014
Intermediate to advanced
366 pages
11h 5m
English
Content preview from Phase Estimation in Optical Interferometry
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235
Chapter 7
Signal-Processing
Methods in Phase-
Shifting Interferometry
Abhijit Patil
John F Welch Technology Centre
Bangalore, India
Rajesh Langoju
GE Global Research Centre
Bangalore, India
Pramod Rastogi
Swiss Federal Institute of Technology
Lausanne, Switzerland
7.1 INTRODUCTION
Previous chapters have introduced various spatial techniques for the
extraction of phase information from a single frame. Among them, the
Fourier transform technique has been most widely studied and applied in
practical situations for fringe analysis, which involves transforming the
intensity data into the Fourier domain. Fringe analysis using this tech-
nique involves the ...