Phase coding method for absolute phase retrieval with a large number of codewords

A recently proposed phase coding method for absolute phase retrieval performs well because its codeword is embedded into phase domain rather than intensity. Then, the codeword can determine the fringe order for the phase unwrapping. However, for absolute phase retrieval with a large number of codewo...

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Veröffentlicht in:Optics express 2012-10, Vol.20 (22), p.24139-24150
Hauptverfasser: Zheng, Dongliang, Da, Feipeng
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container_title Optics express
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creator Zheng, Dongliang
Da, Feipeng
description A recently proposed phase coding method for absolute phase retrieval performs well because its codeword is embedded into phase domain rather than intensity. Then, the codeword can determine the fringe order for the phase unwrapping. However, for absolute phase retrieval with a large number of codewords, the traditional phase coding method becomes not so reliable. In this paper, we present a novel phase coding method to tackle this problem. Six additional fringe images can generate more than 64(2(6)) unique codewords for correct absolute phase retrieval. The novel phase coding method can be used for absolute phase retrieval with high frequency. Experiment results demonstrate the proposed method is effective.
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title Phase coding method for absolute phase retrieval with a large number of codewords
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