A Parallel Fringe-scanning Algorithm for Phase-shifting Interferometry
- 1 May 1988
- journal article
- research article
- Published by Taylor & Francis in Journal of Modern Optics
- Vol. 35 (5) , 843-846
- https://doi.org/10.1080/09500348814550971
Abstract
In connection with digital interferometry, the evaluation of phase-shifted interferograms can be speeded up by a digital image processor. A special parallel algorithm has been designed for scanning the saw-tooth shaped fringes. It is shown that the number of image passes (TC cycles) for a 2 j × 2 j pixel image is reduced to j instead of 2j. Fringe scanning of a saw-tooth phase image and a pseudocoloured display of the continuous phase is obtained after 1·4s for 512 × 512 points.Keywords
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