Open AccessImproved generalized regularized phase tracker for demodulation of a single fringe pattern
Author(s) -
Kai Li,
Qian Kemao
Publication year - 2013
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.21.024385
Subject(s) - demodulation , computer science , regularization (linguistics) , phase retrieval , optics , phase (matter) , point spread function , phase modulation , algorithm , artificial intelligence , phase noise , mathematics , physics , fourier transform , telecommunications , channel (broadcasting) , quantum mechanics , mathematical analysis
A generalized regularized phase tracker (GRPT) for demodulation of a single fringe pattern was recently proposed. It is very successful for many fringe patterns. However, the GRPT has poor performance in the area where the fringe pattern is sparse. An improved GRPT (iGRPT) with two novel improvements is proposed to overcome the problem. First, the fixed window used in the GRPT is replaced by a spatially adaptive window. Second, a background regularization term and a modulation regularization term are incorporated in the cost function. With these two improvements, the proposed iGRPT can successfully demodulate sparse fringes and thus improves the demodulation capability of the GRPT. Simulation and experimental results are presented to verify the performance of the iGRPT.