Results 71 to 80 of about 3,035 (179)
Imaging of Live Cells by Digital Holographic Microscopy
PhotonicsImaging of microscopic objects is of fundamental importance, especially in life sciences. Recent fast progress in electronic detection and control, numerical computation, and digital image processing, has been crucial in advancing modern microscopy ...
Emilia Mitkova Mihaylova
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Holographic fluorescence microscopy with incoherent digital holographic adaptive optics
Journal of Biomedical Optics, 2015 Introduction of adaptive optics technology into astronomy and ophthalmology has made great contributions in these fields, allowing one to recover images blurred by atmospheric turbulence or aberrations of the eye. Similar adaptive optics improvement in microscopic imaging is also of interest to researchers using various techniques.
Changwon, Jang +5 more
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Phase Retrieval for Digital Holographic Microscopy With Defocused Holograms
IEEE Photonics Journal, 2018 A new phase retrieval technique in digital holographic microscopy (DHM) with three defocused holograms is proposed. Given the defocusing distance, the phase distributions of tested specimen can be reconstructed with a simple algebraic equation.
Dingnan Deng +5 more
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Special Issue on Digital Holographic 3D Imaging: Capture, Display, and Evaluation
ETRI Journal, 2019 Holography has been fascinating people for almost 70 years (since Gabor's invention in 1947) as a true three‐dimensional (3D) imaging technology that can replicate 3D scenes in free space.
Małgorzata Kujawińska +3 more
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Microsphere-assisted quantitative phase microscopy: a review
Light: Advanced ManufacturingLight microscopes are the most widely used devices in life and material sciences that allow the study of the interaction of light with matter at a resolution better than that of the naked eye. Conventional microscopes translate the spatial differences in
Vahid Abbasian +6 more
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JPhys PhotonicsI propose a digital holographic microscopy technique in which complex amplitude distributions at multiple wavelengths are simultaneously obtained with a common-path self-reference interferometer and a monochrome image sensor.
Tatsuki Tahara
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Separation of overlapped particles in digital holographic microscopy
Optics Express, 2013 In this paper, we present a procedure to separate aggregates of overlapped particles in digital holograms, based on a focus plane analysis applied to each particle. The method can be applied either on phase or on amplitude objects, according that each object has a border in one focus plane. Numerical simulations are performed to quantify the robustness
El Mallahi, Ahmed, Dubois, Frank
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OpticsAutomatic focusing is a crucial research issue for achieving high-quality reconstructed images in digital holographic microscopy. This paper proposes an automatic focusing method that combines the discrete cosine transform (DCT) sparse dictionary with ...
Zhaoliang Liu, Peizhen Qiu, Yupei Zhang
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Label-free spatio-temporal monitoring of cytosolic mass, osmolarity, and volume in living cells
Nature Communications, 2019 Label-free, spatio-temporal imaging of cellular physiological responses is challenging. Here the authors combine digital holographic microscopy with a millifluidic chip and mathematical modelling to quantify cell volume, mass and cell uptake under ...
Daniel Midtvedt +3 more
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P-TDHM: Open-source portable telecentric digital holographic microscope
HardwareXWe present the design of a low-cost, portable telecentric digital holographic microscope (P-TDHM) that utilizes off-the-shelf components. We describe the system’s hardware and software elements and evaluate its performance by imaging samples ranging from
Lei Jin +7 more
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