Journal
OPTICS COMMUNICATIONS
Volume 359, Issue -, Pages 200-206Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.optcom.2015.09.084
Keywords
Phase demodulation; Hilbert transform; Fringe pattern; Wrapped phase map
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This paper suggests the use of FIR Hilbert transformers to extract the phase of fringe patterns. This method is computationally faster than any known spatial method that produces wrapped phase maps. Also, the algorithm does not require any parameters to be adjusted which are dependent upon the specific fringe pattern that is being processed, or upon the particular setup of the optical fringe projection system that is being used. It is therefore particularly suitable for full algorithmic automation. The accuracy and validity of the suggested method has been tested using both computer-generated and real fringe patterns. This novel algorithm has been proposed for its advantages in terms of computational processing speed as it is the fastest available method to extract the wrapped phase information from a fringe pattern. (C) 2015 Elsevier B.V. All rights reserved.
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