20 November 1989 A Quasi Heterodyne Holographic Technique And Automatic Algorithms For Phase Unwrapping
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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.
© (1989) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
D. P. Towers, T. R. Judge, P. J. Bryanston-Cross, "A Quasi Heterodyne Holographic Technique And Automatic Algorithms For Phase Unwrapping", Proc. SPIE 1163, Fringe Pattern Analysis, (20 November 1989); doi: 10.1117/12.962786; https://doi.org/10.1117/12.962786


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