Three-dimensional shape restoration using virtual grating phase detection from deformed grating

Shaoxiang Zhou; Jinyou Jiang; Qimin Wang

doi:10.1117/12.23955

1 April 1991 Three-dimensional shape restoration using virtual grating phase detection from deformed grating

Shaoxiang Zhou, Jinyou Jiang, Qimin Wang

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.

Citation Download Citation

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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