Results 41 to 50 of about 857,162 (283)

Preprocessing methods for quantitative phase image stitching

open access: yesBiomedical Optics Express, 2021
Quantitative phase imaging of cell cultures and histopathological slides often requires measurements in large fields of view which is realized through the stitching of multiple high resolution phase maps. Due to the characteristic properties of phase images, careful preprocessing is crucial for maintaining the metrological value of the stitched phase ...
Piotr Stȩpień   +2 more
openaire   +2 more sources

Multispectral Quantitative Phase Imaging Using a Diffractive Optical Network

open access: yesAdvanced Intelligent Systems, 2023
As a label‐free imaging technique, quantitative phase imaging (QPI) provides optical path length information of transparent specimens for various applications in biology, materials science, and engineering.
Che-Yung Shen   +3 more
doaj   +1 more source

Automated Fourier space region-recognition filtering for off-axis digital holographic microscopy [PDF]

open access: yes, 2016
Automated label-free quantitative imaging of biological samples can greatly benefit high throughput diseases diagnosis. Digital holographic microscopy (DHM) is a powerful quantitative label-free imaging tool that retrieves structural details of cellular ...
He, Xuefei   +9 more
core   +1 more source

Quantitative phase contrast imaging with a nonlocal angle-selective metasurface

open access: yesNature Communications, 2022
The authors present an approach to phase imaging by using the non-local optical response of a guided-moderesonator metasurface. They demonstrate that this metasurface can be added to a conventional microscope to enable quantitative phase contrast imaging.
Anqi Ji   +10 more
doaj   +1 more source

Simultaneous off-axis multiplexed holography and regular fluorescence microscopy of biological cells

open access: yes, 2018
We present a new technique for obtaining simultaneous multimodal quantitative phase and fluorescence microscopy of biological cells, providing both quantitative phase imaging and molecular specificity using a single camera.
Barnea, Itay   +3 more
core   +1 more source

Suppression of Octahedral Tilts and Associated Changes of Electronic Properties at Epitaxial Oxide Heterostructure Interfaces [PDF]

open access: yes, 2010
Epitaxial oxide interfaces with broken translational symmetry have emerged as a central paradigm behind the novel behaviors of oxide superlattices. Here, we use scanning transmission electron microscopy to demonstrate a direct, quantitative unit-cell-by ...
Borisevich, A.   +12 more
core   +5 more sources

Deep Phase Shifter for Quantitative Phase Imaging

open access: yes, 2020
A single intensity-only holographic interferogram can records the full amplitude and phase information of optical field. However, current digital holography technologies cannot recover the lossless phase information from a single interferogram. In this paper, we provide an entirely new approach for the full-field quantitative phase imaging technology ...
Zhang, Qinnan   +7 more
openaire   +2 more sources

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

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

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

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