Results 11 to 20 of about 6,973,682 (218)

Phase unwrapping using deep learning in holographic tomography.

open access: yesOptics Express, 2023
Holographic tomography (HT) is a measurement technique that generates phase images, often containing high noise levels and irregularities. Due to the nature of phase retrieval algorithms within the HT data processing, the phase has to be unwrapped before
Michał Gontarz   +3 more
semanticscholar   +1 more source

InSAR Phase Unwrapping Based on Square-Root Cubature Kalman Filter

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2020
In this article, we propose a novel phase unwrapping method termed the square-root cubature Kalman filter phase unwrapping (SCKFPU) method. Specifically, as the system model of the interferometric synthetic aperture (InSAR) phase unwrapping can be ...
Xiaomei Luo   +3 more
doaj   +1 more source

An improved method of GB-SAR phase unwrapping for landslide monitoring

open access: yesFrontiers in Earth Science, 2022
The ground-based Synthetic Aperture Radar (GB-SAR) technique can be applied to the safety monitoring and early warning of geo-hazards, especially for monitoring displacement of various types of landslide masses. One of the key techniques of processing GB-
Xia Xiang   +9 more
doaj   +1 more source

Phase unwrapping for MHz optical coherence elastography and application to brain tumor tissue

open access: yesBiomedical Optics Express, 2023
During neuro-oncologic surgery, phase-sensitive optical coherence elastography (OCE) can be valuable for distinguishing between healthy and diseased tissue.
Sazgar Burhan   +9 more
semanticscholar   +1 more source

A Robust InSAR Phase Unwrapping Method via Phase Gradient Estimation Network

open access: yesRemote Sensing, 2021
Phase unwrapping is a critical step in synthetic aperture radar interferometry (InSAR) data processing chains. In almost all phase unwrapping methods, estimating the phase gradient according to the phase continuity assumption (PGE-PCA) is an essential ...
Liming Pu   +6 more
doaj   +1 more source

Phase Cost Indicator-Guided Central Difference Information Filter 2-D Phase Unwrapping Approach

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2023
Phase unwrapping (PU) as an ill-posed inverse scientific problem has invariably been the significant difficulty in interferometric synthetic aperture radar technique for topographic mapping.
Yansuo Zhang   +3 more
doaj   +1 more source

A CNN-Based Coherence-Driven Approach for InSAR Phase Unwrapping

open access: yesIEEE Geoscience and Remote Sensing Letters, 2022
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 ...
Francescopaolo Sica   +3 more
semanticscholar   +1 more source

Phase Unwrapping Error Correction Based on Multiple Linear Regression Analysis

open access: yesItalian National Conference on Sensors, 2023
Fringe projection profilometry (FPP) is prone to phase unwrapping error (PUE) due to phase noise and measurement conditions. Most of the existing PUE-correction methods detect and correct PUE on a pixel-by-pixel or partitioned block basis and do not make
Z. Lv   +8 more
semanticscholar   +1 more source

A new 3D phase unwrapping method by region partitioning and local polynomial modeling in abdominal quantitative susceptibility mapping

open access: yesFrontiers in Neuroscience, 2023
BackgroundAccurate phase unwrapping is a critical prerequisite for successful applications in phase-related MRI, including quantitative susceptibility mapping (QSM) and susceptibility weighted imaging.
Junying Cheng   +8 more
doaj   +1 more source

Phase-Shifting Projected Fringe Profilometry Using Binary-Encoded Patterns

open access: yesPhotonics, 2021
A phase unwrapping method for phase-shifting projected fringe profilometry is presented. It did not require additional projections to identify the fringe orders. The pattern used for the phase extraction could be used for phase unwrapping directly.
Nai-Jen Cheng, Wei-Hung Su
doaj   +1 more source

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