Spatially sampling effect on fringe phase-shifting detection

Bing Zhao; Huimin Xie; Anand Asundi

doi:10.1117/12.621507

12 April 2005 Spatially sampling effect on fringe phase-shifting detection

Bing Zhao, Huimin Xie, Anand Asundi

Proceedings Volume 5852, Third International Conference on Experimental Mechanics and Third Conference of the Asian Committee on Experimental Mechanics; (2005) https://doi.org/10.1117/12.621507
Event: Third International Conference on Experimental Mechanics and Third Conference of the Asian Committee on Experimental Mechanics, 2004, -, Singapore

Abstract

One effect of spatially sampling of an image is averaging the image intensity over each pixel. In this paper, this spatial average effect on phase-shifting detection of fringe pattern is investigated. The phase error due to pixel size and sampling rate is formulated. It is shown that lower sampling frequency, for example, 1/4 fringes per pixel for 1-D fringe signal, 1/6 fringes per pixel for 2-D signal, will cause larger measurement error.

Citation Download Citation

Bing Zhao, Huimin Xie, and Anand Asundi "Spatially sampling effect on fringe phase-shifting detection", Proc. SPIE 5852, Third International Conference on Experimental Mechanics and Third Conference of the Asian Committee on Experimental Mechanics, (12 April 2005); https://doi.org/10.1117/12.621507

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