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Title: Simplified carré's method for phase extraction
Authors: Chen, L.
Quan, C. 
Tay, C.J. 
Keywords: Background removal
Carré's method
Phase extraction
Phase shifting
Issue Date: 2005
Citation: Chen, L., Quan, C., Tay, C.J. (2005). Simplified carré's method for phase extraction. Proceedings of SPIE - The International Society for Optical Engineering 5852 PART I : 198-202. ScholarBank@NUS Repository.
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 Carré'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).
Source Title: Proceedings of SPIE - The International Society for Optical Engineering
ISSN: 0277786X
DOI: 10.1117/12.621505
Appears in Collections:Staff Publications

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