Results 11 to 20 of about 857,162 (283)
Quantitative phase imaging via Fourier ptychographic microscopy [PDF]
Optics Letters, 2013 Fourier ptychographic microscopy (FPM) is a recently developed imaging modality that uses angularly varying illumination to extend a system’s performance beyond the limit defined by its optical components.
Horstmeyer, Roarke +3 more
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GPC and quantitative phase imaging [PDF]
SPIE Proceedings, 2016 Generalized Phase Contrast (GPC) is a light efficient method for generating speckle-free contiguous optical distributions using binary-only or analog phase levels. It has been used in applications such as optical trapping and manipulation, active microscopy, structured illumination, optical security, parallel laser marking and labelling and recently in
Banas, Andrew Rafael +3 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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Using an inexpensive module for Quantitative Phase Imaging [PDF]
EPJ Web of Conferences, 2023 We report on modular implementation of digital holography that we recently proposed. The module is designed such that it may be added to an existing brightfield microscope’s image port for digital holographic microscopy functionality. The proposed system
Xin Fan, Muddiman Ryan, Hennelly Bryan
doaj +1 more source
Variational Hilbert Quantitative Phase Imaging. [PDF]
Sci Rep, 2020 AbstractUtilizing the refractive index as the endogenous contrast agent to noninvasively study transparent cells is a working principle of emerging quantitative phase imaging (QPI). In this contribution, we propose the Variational Hilbert Quantitative Phase Imaging (VHQPI)—end-to-end purely computational add-on module able to improve performance of a ...
Trusiak M +6 more
europepmc +4 more sources
Quantitative phase imaging of arthropods [PDF]
Journal of Biomedical Optics, 2015 Classification of arthropods is performed by characterization of fine features such as setae and cuticles. An unstained whole arthropod specimen mounted on a slide can be preserved for many decades, but is difficult to study since current methods require sample manipulation or tedious image processing.
Shamira, Sridharan +3 more
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Quantitative Phase and Absorption Contrast Imaging
IEEE Transactions on Computational Imaging, 2022 We present an algorithm for coherent diffractive imaging with phaseless measurements. It treats the forward model as a combination of coherent and incoherent waves. The algorithm reconstructs absorption and phase contrast that quantifies the attenuation and the refraction of the waves propagating through an object.
Miguel Moscoso +3 more
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Quantitative Phase Imaging Using Deep Learning-Based Holographic Microscope
Frontiers in Physics, 2021 Digital holographic microscopy enables the measurement of the quantitative light field information and the visualization of transparent specimens. It can be implemented for complex amplitude imaging and thus for the investigation of biological samples ...
Jianglei Di +5 more
doaj +1 more source
Lensless Three-Dimensional Quantitative Phase Imaging Using Phase Retrieval Algorithm
Journal of Imaging, 2020 Quantitative phase imaging (QPI) techniques are widely used for the label-free examining of transparent biological samples. QPI techniques can be broadly classified into interference-based and interferenceless methods.
Vijayakumar Anand +4 more
doaj +1 more source
Quantitative Phase Imaging of Thin Film Surface
Acta Physica Polonica A, 2021 This work was supported by the Tekirdağ Namık Kemal University Scientific Research Project Commission (NKUBAP.01.GA.18.148) and the Turkish Scientific and Technical Research Council (TUBITAK-MFAG No 120F325).
Tiryaki, E., Kocahan, O., Ozder, S.
openaire +4 more sources