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Proceedings Paper

Spatially sampling effect on fringe phase-shifting detection
Author(s): Bing Zhao; Huimin Xie; Anand Asundi
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Paper 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.

Paper Details

Date Published: 12 April 2005
PDF: 4 pages
Proc. SPIE 5852, Third International Conference on Experimental Mechanics and Third Conference of the Asian Committee on Experimental Mechanics, (12 April 2005);
Show Author Affiliations
Bing Zhao, Tongji Univ. (China)
Huimin Xie, Tsinghua Univ. (China)
Anand Asundi, Nanyang Technological Univ. (Singapore)


Published in SPIE Proceedings Vol. 5852:
Third International Conference on Experimental Mechanics and Third Conference of the Asian Committee on Experimental Mechanics
Chenggen Quan; Fook Siong Chau; Anand Asundi; Brian Stephen Wong; Chwee Teck Lim, Editor(s)

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