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Proceedings Paper

Automatic Fringe Pattern Analysis For Holographic Measurement Of Transient Event
Author(s): M Kujawinska; D W Robinson
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Paper Abstract

A modified optical system and computer image processing software is presented, to automate the analysis of holographic fringe patterns for applications in measurement of transient events is presented. Two fringe pattern analysis techniques are considered; a phase stepped method and a 2-D Fourier transform method. Both of them rely on spatial separation of phase information, although they are based on different physical principles. In the phase stepped method a grating is introduced into the holographic interferometer to separate three phase shifted images into the spatial domain instead of the time domain. In the Fourier transform method a spatial heterodyning frequency is added to the interferogram to isolate phase information in the spatial frequency domain. A comparison between the two methods is given, together with several refinements.

Paper Details

Date Published: 31 March 1989
PDF: 11 pages
Proc. SPIE 1026, Holography Techniques and Applications, (31 March 1989); doi: 10.1117/12.950232
Show Author Affiliations
M Kujawinska, Kings College London (UK)
D W Robinson, National Physical Laboratory (UK)

Published in SPIE Proceedings Vol. 1026:
Holography Techniques and Applications
Werner P. O. Jueptner, Editor(s)

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