Results 51 to 60 of about 858,901 (185)

Single-Shot Smartphone-Based Quantitative Phase Imaging Using a Distorted Grating. [PDF]

open access: yesPLoS ONE, 2016
Blood testing has been used as an essential tool to diagnose diseases for decades. Recently, there has been a rapid developing trend in using Quantitative Phase Imaging (QPI) methods for blood cell screening.
Zhenyu Yang, Qiwen Zhan
doaj   +1 more source

Iterative projection meets sparsity regularization: towards practical single-shot quantitative phase imaging with in-line holography

open access: yesLight: Advanced Manufacturing, 2023
Holography provides access to the optical phase. The emerging compressive phase retrieval approach can achieve in-line holographic imaging beyond the information-theoretic limit or even from a single shot by exploring the signal priors.
Yunhui Gao, Liangcai Cao
doaj   +1 more source

Quantitative Phase Imaging Camera With a Weak Diffuser

open access: yesFrontiers in Physics, 2019
We introduce the quantitative phase imaging camera with a weak diffuser (QPICWD) as an effective scheme of quantitative phase imaging (QPI) based on normal microscope platforms.
Linpeng Lu   +16 more
doaj   +1 more source

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

Accurate single-shot quantitative phase imaging of biological specimens with telecentric digital holographic microscopy [PDF]

open access: yes, 2014
The advantages of using a telecentric imaging system in digital holographic microscopy (DHM) to study biological specimens are highlighted. To this end, the performances of nontelecentric DHM and telecentric DHM are evaluated from the quantitative phase ...
Ana Doblas   +9 more
core   +2 more sources

High-resolution 3D phase imaging using a partitioned detection aperture: a wave-optic analysis

open access: yes, 2015
Quantitative phase imaging has become a topic of considerable interest in the microscopy community. We have recently described one such technique based on the use of a partitioned detection aperture, which can be operated in a single shot with an ...
Barankov, Roman   +2 more
core   +1 more source

Quantitative phase imaging with partially coherent illumination [PDF]

open access: yesOptics Letters, 2014
In this Letter, we formulate a mathematical model for predicting experimental outcomes in quantitative phase imaging (QPI) when the illumination field is partially spatially coherent. We derive formulae that apply to QPI and discuss expected results for two classes of QPI experiments: common path and traditional interferometry, under varying degrees of
T H, Nguyen   +3 more
openaire   +2 more sources

Transmission Structured Illumination Microscopy for Quantitative Phase and Scattering Imaging

open access: yesFrontiers in Physics, 2021
In this paper, we demonstrate a digital micromirror device (DMD) based optical microscopic apparatus for quantitative differential phase contrast (qDIC) imaging, coherent structured illumination microscopy (SIM), and dual-modality (scattering/fluorescent)
Kai Wen   +5 more
doaj   +1 more source

Quantitative phase imaging based on polarization encoding

open access: yesOptics Express, 2022
Most optical characterization methods rely on measuring the complex optical fields emerging from the interaction between light and material systems. Nevertheless, inherent scattering and absorption cause ambiguities in both interferometric and noninterferometric attempts to measure phase.
Shengwei Cui   +4 more
openaire   +2 more sources

Reference-free polarization-sensitive quantitative phase imaging using single-point optical phase conjugation [PDF]

open access: yes, 2018
We propose and experimentally demonstrate a method of polarization-sensitive quantitative phase imaging using two photodetectors and a digital micromirror device.
Lee, KyeoReh   +4 more
core   +2 more sources

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