Results 11 to 20 of about 939,663 (300)

Using the Transport of Intensity and the Transport of Phase Equation for Phase Retrieval

CoRR
We investigate the transport of intensity equation (TIE) and the transport of phase equation (TPE) for solving the phase retrieval problem. Both the TIE and the TPE are derived from the paraxial Helmholtz equation and relate phase information to the intensity. The TIE is usually favored since the TPE is nonlinear. The main contribution of this paper is
Kirisits, Clemens, Raik, Kemal, Scherzer, Otmar, Strohmenger, Christina Ulrike, Yan, Jikai   +4 more
openaire   +4 more sources

Surface Depth-Mapping of Material via the Transport-of-Intensity Equation

Photonics, 2022
We present a new approach for a surface characterization based on the TIE method combined with the SEM. Experimental verification is carried out on the example of characterization of a crater on the surface of monocrystalline silicon (111).
Nikita Stsepuro, Michael Kovalev, George Krasin, Ivan Podlesnykh, Yulia Gulina, Sergey Kudryashov   +5 more
doaj   +1 more source

High Capacity Steganography via Optical Phase-Encoding and Transport of Intensity Equation

IEEE Photonics Journal, 2021
A high capacity steganography based on optical phase-encoding and transport of intensity equation (TIE) is proposed. The secret image is phase-encoded and then attached a real-valued host image to form a complex light field, which diffracts a short ...
Chenggong Zhang, Wenqi He, Xiaoli Liu, Xiang Peng, Qijian Tang   +4 more
doaj   +1 more source

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

Компьютерная 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, M.S. Kovalev, G.K. Krasin, I.V. Gritsenko, A.V. Bobkov, S.I. Kudryashov   +5 more
doaj   +1 more source

Public transport equity in Shenyang: Using structural equation modelling [PDF]

, 2022
In China, with the rapid development of urbanisation, the contradiction between supply and demand has become increasingly severe, particularly in large and medium-sized cities.
Liu, Y., Ma, L., Wang, Y., Cao, M., Gao, X., Ye, R.   +5 more
core   +1 more source

Stability of Intracellular Protein Concentration under Extreme Osmotic Challenge

Cells, 2021
Cell volume (CV) regulation is typically studied in short-term experiments to avoid complications resulting from cell growth and division. By combining quantitative phase imaging (by transport-of-intensity equation) with CV measurements (by the exclusion
Jordan E. Hollembeak, Michael A. Model
doaj   +1 more source

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

Photonics, 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, Xiaotian Zhu, Ju Li, Zhengguang Tian   +3 more
doaj   +1 more source

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

Cells, 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, Fajing Li, Xiang Chen, Jun Ma, Shouping Nie, Ran Ye, Caojin Yuan   +6 more
doaj   +1 more source

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

Frontiers 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, Jay M. Albert, Samuel D. Walton   +2 more
doaj   +1 more source

Transport of intensity equation method and its applications [PDF]

Microscopy, 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