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   Articles with "phase unwrapping" as a keyword



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Phase unwrapping with a rapid opensource minimum spanning tree algorithm (ROMEO)

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recommendations! Published in 2020 at "Magnetic Resonance in Medicine"

DOI: 10.1002/mrm.28563

Abstract: To develop a rapid and accurate MRI phase‐unwrapping technique for challenging phase topographies encountered at high magnetic fields, around metal implants, or postoperative cavities, which is sufficiently fast to be applied to large‐group studies including… read more here.

Keywords: phase; rapid opensource; opensource minimum; minimum spanning ... See more keywords
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Phase unwrapping methods for solving the ambiguity in current velocity estimation based on combined signal design

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recommendations! Published in 2018 at "Flow Measurement and Instrumentation"

DOI: 10.1016/j.flowmeasinst.2017.12.001

Abstract: Abstract Acoustic Doppler Current Profiler (ADCP) due to the Doppler principle is a powerful instrument for the current velocity measurement, where the complex autocorrelation function is a commonly used method to estimate the Doppler frequency… read more here.

Keywords: phase unwrapping; phase; current velocity; velocity estimation ... See more keywords
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Direction-determined phase unwrapping using geometric constraint of the structured light system: The establishment of minimum phase map

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recommendations! Published in 2017 at "Optics Communications"

DOI: 10.1016/j.optcom.2017.05.046

Abstract: Abstract A recently proposed absolute phase unwrapping method using geometric constraints of the structured light system significantly improves the measurement speed and the robustness. The most important step of this method is to create a… read more here.

Keywords: phase; direction determined; phase map; phase unwrapping ... See more keywords
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Adaptive mask generating algorithm based on the fuzzy set theory for the weighted least-squares phase unwrapping

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recommendations! Published in 2021 at "Optics and Lasers in Engineering"

DOI: 10.1016/j.optlaseng.2021.106721

Abstract: Abstract In the digital speckle pattern interferometry (DSPI), accurate phase unwrapping is essential for quantitative phase measurement. In this paper, a novel adaptive mask generating algorithm based on the fuzzy set theory is proposed, which… read more here.

Keywords: adaptive mask; mask generating; phase unwrapping; generating algorithm ... See more keywords
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Fast adaptive phase unwrapping algorithm based on improved bucket sorting

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recommendations! Published in 2021 at "Optics and Lasers in Engineering"

DOI: 10.1016/j.optlaseng.2021.106745

Abstract: Abstract As a key step in active structured light reconstruction technology, the phase unwrapping algorithm has a direct impact on improving measurement accuracy and efficiency. A fast adaptive phase unwrapping algorithm based on improved bucket… read more here.

Keywords: unwrapping algorithm; adaptive phase; phase unwrapping; bucket ... See more keywords
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A generalized multi-sensitivity temporal phase unwrapping method for absolute phase retrieval

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recommendations! Published in 2017 at "Optics and Laser Technology"

DOI: 10.1016/j.optlastec.2017.05.026

Abstract: Abstract In this paper, a noble phase unwrapping method based on 2-sensitivity temporal phase unwrapping (TPU) is proposed. The algorithm considers the maximum ratio between two wavelengths in a measurement system and deals with wrapped… read more here.

Keywords: phase; generalized multi; unwrapping method; temporal phase ... See more keywords
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Using Phase Unwrapping Methods to Apply D-InSAR in Mining Areas

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recommendations! Published in 2019 at "Canadian Journal of Remote Sensing"

DOI: 10.1080/07038992.2019.1583097

Abstract: Abstract Phase unwrapping is one of the key processing steps of D-InSAR (Differential Interferometric Synthetic Aperture Radar), and its accuracy has a great impact on the accuracy of interferometric deformation results. Therefore, it is necessary… read more here.

Keywords: mining areas; phase; coherence; phase unwrapping ... See more keywords
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A Probabilistic Approach for Spatio-Temporal Phase Unwrapping in Multi-Frequency Phase-Shift Coding

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recommendations! Published in 2022 at "IEEE Access"

DOI: 10.1109/access.2022.3174121

Abstract: Multi-frequency techniques with temporally encoded pattern sequences are used in phase-measuring methods of 3D optical metrology to suppress phase noise but lead to ambiguities that can only be resolved by phase unwrapping. However, classical phase… read more here.

Keywords: multi frequency; phase unwrapping; temporal phase; phase ... See more keywords
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A Refined Cluster-Analysis-Based Multibaseline Phase-Unwrapping Algorithm

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recommendations! Published in 2017 at "IEEE Geoscience and Remote Sensing Letters"

DOI: 10.1109/lgrs.2017.2723050

Abstract: As is well known, multibaseline phase unwrapping (PU) is put forward to overcome single-baseline PU in discontinuous-terrain-height estimation. This letter presents a refined algorithm based on the cluster analysis (CA)-based noise-robust efficient multibaseline PU algorithm… read more here.

Keywords: algorithm; cluster analysis; multibaseline phase; analysis based ... See more keywords
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A CNN-Based Coherence-Driven Approach for InSAR Phase Unwrapping

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recommendations! Published in 2020 at "IEEE Geoscience and Remote Sensing Letters"

DOI: 10.1109/lgrs.2020.3029565

Abstract: Phase unwrapping (PU) is among the most critical tasks in synthetic aperture radar (SAR) interferometry (InSAR). Due to the presence of noise, the interferogram usually presents phase inconsistencies, also called residues, which imply a nonunivocal… read more here.

Keywords: phase; phase unwrapping; insar; based coherence ... See more keywords
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InSAR Phase Unwrapping by Deep Learning Based on Gradient Information Fusion

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recommendations! Published in 2022 at "IEEE Geoscience and Remote Sensing Letters"

DOI: 10.1109/lgrs.2021.3127318

Abstract: Phase unwrapping (PhU) is an important step in interferometric synthetic aperture radar (InSAR) technology. At present, difficulties are encountered when using deep learning to solve the PhU problem because the fringe density of the actual… read more here.

Keywords: gradient information; phase unwrapping; deep learning; fusion ... See more keywords