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Opt Lett. 2012 Jun 1;37(11):2067-9. doi: 10.1364/OL.37.002067.

Novel phase-coding method for absolute phase retrieval.

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  • 1Department of Mechanical Engineering, Iowa State University, Ames, Iowa 50011, USA.

Abstract

This Letter presents a novel absolute phase recovery technique with phase coding. Unlike the conventional gray-coding method, the codeword is embedded into the phase and then used to determine the fringe order for absolute phase retrieval. This technique is robust because it uses phase instead of intensity to determine codewords, and it could achieve a faster measurement speed, since three additional images can represent more than 8(2(3)) unique codewords for phase unwrapping. Experimental results will be presented to verify the performance of the proposed technique.

PMID:
22660123
[PubMed - indexed for MEDLINE]
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