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A novel multiple directional shearing interferometry system with synchronous polarization phase shifting [PDF]

open access: yesScientific Reports
This paper explores a multi-directional (multiple directional) shearing synchronous polarization phase-shifting interferometer that utilizes a birefringent crystal displacer. This design effectively mitigates nonlinear issues and environmental influences
Yahui Zhu   +4 more
doaj   +2 more sources

Camera Calibration Robust to Defocus Using Phase-Shifting Patterns [PDF]

open access: yesSensors, 2017
Camera parameters can’t be estimated accurately using traditional calibration methods if the camera is substantially defocused. To tackle this problem, an improved approach based on three phase-shifting circular grating (PCG) arrays is proposed in this ...
Bolin Cai   +4 more
doaj   +2 more sources

A phase-shifting anterior-posterior network organizes global phase relations [PDF]

open access: yesPLoS ONE
Prior research has identified a variety of task-dependent networks that form through inter-regional phase-locking of oscillatory activity that are neural correlates of specific behaviors.
Melisa Menceloglu   +2 more
doaj   +4 more sources

Single-shot incoherent digital holography based on generalised three-step phase-shifting method with 1D phase grating [PDF]

open access: yesScientific Reports
Incoherent digital holography (IDH) is a passive holographic 3D imaging technique under spatially incoherent light. Single-shot recording with high light-utilization efficiency and high spatial resolution is a challenge in IDH.
Teruyoshi Nobukawa   +5 more
doaj   +2 more sources

Two-step phase shifting differential-recording digital holographic microscopy [PDF]

open access: yesScientific Reports, 2017
We present two-step phase-shifting differential-recording digital holographic microscopy (TPD-DH in microscopy) for phase imaging of microscopic transparent elements.
Jun-He Han   +4 more
doaj   +2 more sources

Single-Shot On-Axis Fizeau Polarization Phase-Shifting Digital Holography for Complex-Valued Dynamic Object Imaging

open access: yesPhotonics, 2022
Digital holography assisted with inline phase-shifting methods has the benefit of a large field of view and a high resolution, but it is limited in dynamic imaging due to sequential detection of multiple holograms.
Hanzi Liu   +5 more
doaj   +1 more source

Performance Evaluation of Harmonic Reduced Non-Overlap Winding Wound Rotor Synchronous Machine

open access: yesEnergies, 2021
The analysis and performance evaluation of a harmonic reduction strategy of a non-overlap winding wound rotor synchronous machine is conducted in this paper.
Karen S. Garner   +2 more
doaj   +1 more source

Holography with Incoherent Light

open access: yesEngineering Proceedings, 2023
Conventional digital holography uses the technique of combining two coherent light fields and the numerical reconstruction of the recorded hologram leads to the object amplitude and phase information.
Akanksha Gautam   +5 more
doaj   +1 more source

Step Surface Profile Measurement Based on Fringe Projection Phase-Shifting Using Selective Sampling

open access: yesPhotonics, 2021
Fringe projection is a non-contact optical method that is widely used in the optical precision measurement of complex stepped surfaces. However, the accuracy of the fringe phase extraction employed has a direct impact on the measurement precision of the ...
Songsong Zhang, Haisong Huang
doaj   +1 more source

Semi-Global Matching Assisted Absolute Phase Unwrapping

open access: yesSensors, 2022
Measuring speed is a critical factor to reduce motion artifacts for dynamic scene capture. Phase-shifting methods have the advantage of providing high-accuracy and dense 3D point clouds, but the phase unwrapping process affects the measurement speed ...
Yi-Hong Liao, Song Zhang
doaj   +1 more source

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