Projection moire as a tool for the automated determination of surface topography

Jaime F. Cardenas-Garcia; S. Zheng; F. Z. Shen

doi:10.1117/12.57490

1 December 1991 Projection moireé as a tool for the automated determination of surface topography

Jaime F. Cardenas-Garcia, S. Zheng, F. Z. Shen

Proceedings Volume 1554, Second International Conference on Photomechanics and Speckle Metrology; (1991) https://doi.org/10.1117/12.57490
Event: San Diego, '91, 1991, San Diego, CA, United States

Abstract

This paper describes a projection moiré set-up useful in the automated and accurate determination of the surface topography of objects. Some unique aspects of the experimental set-up and the implementation of the automated procedures used are: the center line of fringes, especially for the case of broad fringes whose distributions of gray level are much more complicated than those of narrow fringes, can be automatically distinguished and traced; the use of a translation stage allows a distinction to be made between a depression and an elevation, also permitting access to phase information between two fringes; and, fringe orders are automatically assigned, excluding the presence of false fringes.

Citation Download Citation

Jaime F. Cardenas-Garcia, S. Zheng, and F. Z. Shen "Projection moireé as a tool for the automated determination of surface topography", Proc. SPIE 1554, Second International Conference on Photomechanics and Speckle Metrology, (1 December 1991); https://doi.org/10.1117/12.57490

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