Results 71 to 80 of about 22,111 (245)

Improved method for phase wraps reduction in profilometry

open access: yes, 2016
In order to completely eliminate, or greatly reduce the number of phase wraps in 2D wrapped phase map, Gdeisat et al. proposed an algorithm, which uses shifting the spectrum towards the origin.
Du, Guangliang   +6 more
core   +1 more source

A Vision-Based Technique for Lay Length Measurement of Metallic Wire Ropes [PDF]

open access: yes, 2009
The lay length of metallic wire ropes is an important dimensional quantity whose analysis is useful to highlight rope deformations due to distributed damages.
Molinari, Filippo, Vallan, Alberto
core   +1 more source

Profiling Co‐Occurrent Morphological Phenotypes and Their Degree of Expression Severity in Vacuolated Cells by Holo‐Tomographic Flow Cytometry and Fractal Analysis

open access: yesAdvanced Intelligent Systems, EarlyView.
HTFC gets 3D refractive index tomograms of flowing cells. Label‐free monocytes are engineered to express patterns of cytoplasmic vacuoles. From the tomogram, an efficient dimensionality reduction is operated. Interpretable features are extracted to classify the expression severity of phenotypes coexisting in each cell, visually represented by a seven ...
Marika Valentino   +9 more
wiley   +1 more source

Aiding phase unwrapping by increasing the number of residues in two-dimensional wrapped-phase distributions [PDF]

open access: yes
In phase unwrapping residues are points of locally inconsistent phase that occur within a wrapped-phase map, which are usually regarded as being problematic for phase-unwrapping algorithms.
Cusack   +11 more
core   +1 more source

Reducing of phase retrieval errors in Fourier analysis of 2-dimensional digital model interferograms [PDF]

open access: yes, 2006
In order to measure the radial displacements of facets on surface of a growing spherical Cu_{2-\delta}Se crystal with sub-nanometer resolution, we have investigated the reliability and accuracy of standard method of Fourier analysis of fringes obtained ...
Davorin Lovrić   +14 more
core   +2 more sources

Coherence‐Gated Wrapped‐Phase InSAR With Matrix‐Based Uncertainty Diagnostics for Burial‐Mound Hotspot Ranking (Sicily, Italy)

open access: yesArchaeological Prospection, EarlyView.
ABSTRACT Burial mounds are key elements of Mediterranean funerary landscapes, but in intensively cultivated coastal plains their low‐relief expression is easily obscured by ploughing, levelling and rapidly changing surface conditions, making single‐date observations unreliable.
Salvatore Polverino   +2 more
wiley   +1 more source

Time-resolved quantitative multiphase interferometric imaging of a highly focused ultrasound pulse [PDF]

open access: yes, 2010
Interferometric imaging is a well established method to image phase objects by mixing the image wavefront with a reference one on a CCD camera. It has also been applied to fast transient phenomena, mostly through the analysis of single interferograms. It
Abraham   +18 more
core   +5 more sources

Flame‐Retardant Bio‐Based Thermo‐Flexible Phase‐Change Composites with Antivibration and Low‐Contact Resistance for Advanced Battery Thermal Management

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Flame‐retardant bio‐based thermo‐flexible phase‐change composites for advanced battery thermal management. Batteries face critical challenges in thermal management, including overheating risks, poor interfacial contact, and mechanical vibration–induced performance attenuation.
Shichao Feng   +7 more
wiley   +1 more source

New Interferometric Phase Unwrapping Method Based on Energy Minimization From Contextual Modeling

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2020
Two-dimensional phase unwrapping is a critical processing procedure of synthetic aperture radar interferometry. This operation becomes even more difficult in the presence of noise.
Ayoub Tlili   +3 more
doaj   +1 more source

Simultaneous three-wavelength unwrapping using external digital holographic multiplexing module

open access: yes, 2018
We present an external interferometric setup that is able to simultaneously acquire three wavelengths of the same sample instance without scanning or multiple exposures. This setup projects onto the monochrome digital camera three off-axis holograms with
Barnea, Itay   +3 more
core   +1 more source

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