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1 April 1991 Three-dimensional shape restoration using virtual grating phase detection from deformed grating
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Proceedings Volume 1358, 19th Intl Congress on High-Speed Photography and Photonics; (1991) https://doi.org/10.1117/12.23955
Event: 19th International Congress on High-Speed Photography and Photonics, 1990, Cambridge, United Kingdom
Abstract
A quasi-real-time phase detection method for restoring three-dimentional profile is proposed based on phase shifting technique. A deformed grating is formed on the surface of an object under test with the aid of projecting a Ronchi grating. The phase distribution of the deformed fringes corresponds to the profile of the objct. Four scanning moire patterns, having phase difference of itI 2 successively, are generated by means of a virtual grating shifting. The phase values are available at every pixel location from the deformed grating. The principle ofthe method and some experimental results are presented in this paper.
© (1991) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Shaoxiang Zhou, Jinyou Jiang, and Qimin Wang "Three-dimensional shape restoration using virtual grating phase detection from deformed grating", Proc. SPIE 1358, 19th Intl Congress on High-Speed Photography and Photonics, (1 April 1991); https://doi.org/10.1117/12.23955
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