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Proceedings Paper

A Quasi Heterodyne Holographic Technique And Automatic Algorithms For Phase Unwrapping
Author(s): D. P. Towers; T. R. Judge; P. J. Bryanston-Cross
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Paper Abstract

This paper describes recent developments on methods for quantitative analysis of holographic interferograms. Two areas are considered : the holographic system and the automatic processing of fringe images. The holographic system is based on a quasi heterodyne technique. Methods for reconstructing the image with a single beam are presented. This produces a continuously variable phase difference between the two images of the object. An analysis of the errors has been performed for the reconstructed phase maps. A tiling approach and graph theory have been applied to the fringe field processing problem. This has produced an automatic method for analysing fringes forming an optimum solution for a phase or height map.

Paper Details

Date Published: 20 November 1989
PDF: 25 pages
Proc. SPIE 1163, Fringe Pattern Analysis, (20 November 1989); doi: 10.1117/12.962786
Show Author Affiliations
D. P. Towers, Warwick University (England)
T. R. Judge, Warwick University (England)
P. J. Bryanston-Cross, Warwick University (England)


Published in SPIE Proceedings Vol. 1163:
Fringe Pattern Analysis
Graeme T. Reid, Editor(s)

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