Results 161 to 170 of about 535,629 (194)

An iterative compensation solution to the transport-of-intensity equation

Advanced Optical Imaging Technologies III, 2020
In this Letter, we propose a universal iterative compensation solution to the transport-of-intensity equation (US- TIE) with the advantages of high accuracy, convergence guarantee, applicability to arbitrarily-shaped regions, and simplified implementation and computation.
Jialin Zhang, Qian Chen, Jiasong Sun, Long Tian, Chao Zuo   +4 more
openaire   +1 more source

Two-Wavelength Transport of Intensity Equation for Phase Unwrapping

2016
A novel method based on two-wavelength transport of intensity equation (TW-TIE) is proposed for phase unwrapping under large-step discontinuities condition. With a wrapped phase obtained by interferometry setup, two different wavelength illuminations are used to obtain two different intensity images, then TW-TIE is applied to phase unwrapping ...
Zhang Cheng, Cheng Hong, Shen Chuan, Zhang Fen, Bao Wen-Xia, Wei Sui, Han Chao, Fang Jie, Xia Yun   +8 more
openaire   +1 more source

Multiplicative Reconstruction Based on the Transport of Intensity Equation

2018
In order to effectively recover the phase information of the object and reconstruct the three-dimensional shape of the object, a multiplicative reconstruction based on the transport of intensity equation (TIE) is proposed. Firstly, combining with the relationship between the light field moment imaging and the TIE, the phase information and the first ...
Cheng Hong, Wang Jincheng, Shen Chuan, Zhang Cheng, Zhang Fen, Bao Wenxia   +5 more
openaire   +1 more source

Quantitative imaging of yeast cells using transport of intensity equation

2015 Workshop on Recent Advances in Photonics (WRAP), 2015
In biology most microscopy specimens, in particular living cells are transparent. In cell imaging, it is hard to create an image of a cell which is transparent with a very small refractive index change with respect to the surrounding media. Various techniques like addition of staining and contrast agents, markers have been applied in the past for ...
Praveen Kumar Poola, Vimal Prabhu Pandiyan, Renu John   +2 more
openaire   +1 more source

Rapid quantitative phase imaging using the transport of intensity equation

Optics Communications, 1997
Abstract A method for digital phase imaging is proposed. It requires the measurement of intensity in two adjacent planes orthogonal to the optical axis. The phase is subsequently recovered by a Fast Fourier Transform of the Transport of Intensity Equation.
T.E Gureyev, K.A Nugent
openaire   +1 more source

High resolution optical surface testing using transport of intensity equation

SPIE Proceedings, 2013
Phase distribution may be determined by measuring only the intensity distributions along the optical axis via the Transport of Intensity Equation (TIE). TIE has been a viable alternative to interferometry techniques for experimental conditions where those techniques perform poorly.
Peyman Soltani, Ali-Reza Moradi, Ahmad Darudi, Ramin Shomali   +3 more
openaire   +1 more source

High Resolution Phase Imaging using Transport of Intensity Equation

2022
Quantitative phase Imaging(QPI) has emerged as a valuable tool for imaging specimens with weak scattering and absorbing abilities such as cells and tissues. It is complementary to fluorescence microscopy, as such, it can be applied to unlabelled specimens without the need for fluorescent tagging.
openaire   +1 more source

A novel single-shot geometry for transport of intensity equation

Frontiers in Optics + Laser Science 2024 (FiO, LS)
Phase measurement is very important in several applications. In this paper, we present a novel optical module based on Michelson interferometer type geometry for intensity acquisition suitable for transport of intensity equation.
Ram Kumar, Naveen K. Nishchal
openaire   +1 more source

Long-term efficacy and safety of moderate-intensity statin with ezetimibe combination therapy versus high-intensity statin monotherapy in patients with atherosclerotic cardiovascular disease (RACING): a randomised, open-label, non-inferiority trial

Lancet, The, 2022
exaly  

Improved fast Fourier solution based on transport of intensity equation

First Advanced Imaging and Information Processing Conference (AIIP 2023), 2023
Hong Cheng, qihong liu, xiaotian zhu, hao sun, fen zhang, chuan shen   +5 more
openaire   +1 more source