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Proceedings Paper

Simplified Carre method for phase extraction
Author(s): Lujie J. Chen; Chenggen Quan; Cho Jui Tay
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Paper Abstract

A phase-shifting algorithm for speckle patterns with a constant but unknown phase shift is proposed. The algorithm is based on the well known Carre's method. Prior to applying the phase-shifting algorithm a speckle pattern background is removed. In this process, manual intervention is minimal and high computational speed is achieved. In addition, high-frequency phase signal would not be filtered out in the noise reduction process as is the case in band-pass filtering technique. Its validity is tested on the deformation measurement using digital speckle shearing interferometry (DSSI).

Paper Details

Date Published: 12 April 2005
PDF: 5 pages
Proc. SPIE 5852, Third International Conference on Experimental Mechanics and Third Conference of the Asian Committee on Experimental Mechanics, (12 April 2005); doi: 10.1117/12.621505
Show Author Affiliations
Lujie J. Chen, National Univ. of Singapore (Singapore)
Chenggen Quan, National Univ. of Singapore (Singapore)
Cho Jui Tay, National Univ. of Singapore (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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