Many robust phase unwrapping algorithms are computationally very time-consuming, making them impractical for handling large datasets or real-time applications. In this paper, we propose a generic framework using a novel wavelet transform that can be combined with many types of phase unwrapping algorithms. By inserting reversible modulo operators in the wavelet transform, the number of coefficients that need to be unwrapped is significantly reduced, which results in large computational gains. The algorithm is tested on various types of wrapped phase imagery, reporting speedup factors of up to 500. The source code of the algorithm is publicly available.
Blinder, D, Ottevaere, H, Munteanu, A & Schelkens, P 2016, 'Efficient multiscale phase unwrapping methodology with modulo wavelet transform', Optics Express, vol. 24, no. 20, pp. 23094-23108. https://doi.org/10.1364/OE.24.023094
Blinder, D., Ottevaere, H., Munteanu, A., & Schelkens, P. (2016). Efficient multiscale phase unwrapping methodology with modulo wavelet transform. Optics Express, 24(20), 23094-23108. https://doi.org/10.1364/OE.24.023094
@article{0307ca6afc3c4d148fa660e05570e703,
title = "Efficient multiscale phase unwrapping methodology with modulo wavelet transform",
abstract = "Many robust phase unwrapping algorithms are computationally very time-consuming, making them impractical for handling large datasets or real-time applications. In this paper, we propose a generic framework using a novel wavelet transform that can be combined with many types of phase unwrapping algorithms. By inserting reversible modulo operators in the wavelet transform, the number of coefficients that need to be unwrapped is significantly reduced, which results in large computational gains. The algorithm is tested on various types of wrapped phase imagery, reporting speedup factors of up to 500. The source code of the algorithm is publicly available.",
keywords = "Phase unwrapping, Wavelets, Phase-only filters",
author = "David Blinder and Heidi Ottevaere and Adrian Munteanu and Peter Schelkens",
year = "2016",
month = oct,
doi = "10.1364/OE.24.023094",
language = "English",
volume = "24",
pages = "23094--23108",
journal = "Optics Express",
issn = "1094-4087",
publisher = "The Optical Society",
number = "20",
}