Results 11 to 20 of about 535,728 (294)

3D particle tracking using transport of intensity equation (TIE)

open access: yesOptics Express, 2022
This article presents a simple and high-speed approach for tracking colloidal spheres in three dimensions. The method uses the curvature of the wavefront as determined by the transport of intensity equation (TIE) technique. Due to the fact that the TIE is applicable under partially coherent light, our technique is fully compatible with standard bright ...
Nadim Rezaei   +4 more
openaire   +2 more sources

Real-Time Phase Retrieval Based on Cube-Corner Prisms Single Exposure

open access: yesPhotonics, 2022
The phase retrieval method based on the Transport of Intensity Equation needs to record the light intensity information on two or more planes perpendicular to the optical axis propagating along the optical axis. Usually, a single CCD camera is moved back
Hong Cheng   +3 more
doaj   +1 more source

Measurement of the radius of curvature of a spherical surface based on the transport-of-intensity equation

open access: yesКомпьютерная оптика, 2022
The transport-of-intensity equation provides a new non-interferometric and non-iterative access to quantitative information about the phase of a light wave by measuring intensity distributions. This equation can be used to implement a simple and accurate
N.G. Stsepuro   +5 more
doaj   +1 more source

Transport of intensity equation method and its applications [PDF]

open access: yesMicroscopy, 2020
Abstract A phase retrieval technique based on a transport of intensity equation (TIE) is one of the defocus series reconstruction techniques in microscopy. Since it does not require any dedicated devices like a biprism, and only three defocus images are enough to retrieve phase information, it has been applied to observe magnetic fields,
openaire   +2 more sources

ContransGAN: Convolutional Neural Network Coupling Global Swin-Transformer Network for High-Resolution Quantitative Phase Imaging with Unpaired Data

open access: yesCells, 2022
Optical quantitative phase imaging (QPI) is a frequently used technique to recover biological cells with high contrast in biology and life science for cell detection and analysis.
Hao Ding   +6 more
doaj   +1 more source

Multimodal computational microscopy based on transport of intensity equation [PDF]

open access: yesJournal of Biomedical Optics, 2016
Transport of intensity equation (TIE) is a powerful tool for phase retrieval and quantitative phase imaging, which requires intensity measurements only at axially closely spaced planes without a separate reference beam. It does not require coherent illumination and works well on conventional bright-field microscopes.
Jiaji, Li   +4 more
openaire   +2 more sources

Variational Phase Imaging Using the Transport-of-Intensity Equation [PDF]

open access: yesIEEE Transactions on Image Processing, 2016
We introduce a variational phase retrieval algorithm for the imaging of transparent objects. Our formalism is based on the transport-of-intensity equation (TIE), which relates the phase of an optical field to the variation of its intensity along the direction of propagation.
Emrah Bostan   +4 more
openaire   +2 more sources

Drift phase resolved diffusive radiation belt model: 2. implementation in a case of random electric potential fluctuations

open access: yesFrontiers in Astronomy and Space Sciences, 2023
In the first part of this work, we highlighted a drift-diffusion equation capable of resolving the magnetic local time dimension when describing the effects of trapped particle transport on radiation belt intensity.
Solène Lejosne   +2 more
doaj   +1 more source

Drift phase resolved diffusive radiation belt model: 1. Theoretical framework

open access: yesFrontiers in Astronomy and Space Sciences, 2023
Most physics-based models provide a coarse three-dimensional representation of radiation belt dynamics at low time resolution, of the order of a few drift periods. The description of the effect of trapped particle transport on radiation belt intensity is
Solène Lejosne, Jay M. Albert
doaj   +1 more source

On a universal solution to the transport-of-intensity equation [PDF]

open access: yesOptics Letters, 2020
The transport-of-intensity equation (TIE) is one of the most well-known approaches for phase retrieval and quantitative phase imaging. It directly recovers the quantitative phase distribution of an optical field by through-focus intensity measurements in a non-interferometric, deterministic manner.
Jialin Zhang   +4 more
openaire   +3 more sources

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