Results 31 to 40 of about 381,395 (248)
Active single-pixel microscopy for quantitative phase imaging [PDF]
EPJ Web of ConferencesIn this work, a motionless method to achieve quantitative phase imaging in single-pixel microscopy based on the transport of intensity equation is presented.
Zapata-Valencia Samuel I. +3 more
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Phase calibration target for quantitative phase imaging with ptychography
Optics Express, 2016 Quantitative phase imaging (QPI) utilizes refractive index and thickness variations that lead to optical phase shifts. This gives contrast to images of transparent objects. In quantitative biology, phase images are used to accurately segment cells and calculate properties such as dry mass, volume and proliferation rate.
T M, Godden +4 more
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Quantitative Phase Imaging with a Metalens
, 2023 Quantitative phase imaging (QPI) recovers the exact wavefront of light from the intensity measured by a camera. Topographical maps of translucent microscopic bodies can be extracted from these quantified phase shifts. We demonstrate quantitative phase imaging at the tip of an optical fiber endoscope with a chromatic silicon nitride metalens. Our method
Shanker, Aamod +5 more
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Preprocessing methods for quantitative phase image stitching
Biomedical 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
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High-resolution impedance mapping using electrically activated quantitative phase imaging
Light: Science & Applications, 2021 Microscopy: phased-in approach puts nanoscale electrical impedance on the map A microscope capable of real-time, label-free analysis of nanoscale structures and their associated electrical properties could find applications in both biology and materials ...
Cristina Polonschii +8 more
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White-light quantitative phase imaging unit
Optics Express, 2016 We introduce the white light quantitative phase imaging unit (WQPIU) as a practical realization of quantitative phase imaging (QPI) on standard microscope platforms. The WQPIU is a compact stand-alone unit which measures sample induced phase delay under white-light illumination.
Baek, YoonSeok +4 more
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Robust Phase Unwrapping via Deep Image Prior for Quantitative Phase Imaging [PDF]
IEEE Transactions on Image Processing, 2021 Quantitative phase imaging (QPI) is an emerging label-free technique that produces images containing morphological and dynamical information without contrast agents. Unfortunately, the phase is wrapped in most imaging system. Phase unwrapping is the computational process that recovers a more informative image.
Fangshu Yang +5 more
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Results in Physics, 2021 We propose a simple common-path off-axis interferometric system to perform high-quality quantitative phase imaging based on a rotatable birefringent prism that is placed at the output port of a conventional transmission or reflection microscope.
Hsiao-Ning Weng, Chu-Yu Huang
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Quantitative phase imaging with a compact meta-microscope
npj Nanophotonics, 2023 AbstractQuantitative phase imaging (QPI) based on the transport-of-intensity equation (TIE) is a powerful technique in label-free microscopy. The image stack required for a successful TIE-QPI is traditionally obtained by translating the object or image plane, and the optical elements used in the conventional TIE-QPI systems are usually bulky and ...
Junyi Wang +12 more
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Quantitative phase contrast imaging with a nonlocal angle-selective metasurface
Nature 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
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