Results 51 to 60 of about 2,784,941 (298)

Resolution and Contrast Enhancement for Lensless Digital Holographic Microscopy and Its Application in Biomedicine

open access: yesPhotonics, 2022
An important imaging technique in biomedicine, the conventional optical microscopy relies on relatively complicated and bulky lens and alignment mechanics.
Duofang Chen   +4 more
doaj   +1 more source

Multicascade-linked synthetic wavelength digital holography using an optical-comb-referenced frequency synthesizer [PDF]

open access: yes, 2018
Digital holography (DH) is a promising method for non-contact surface topography because the reconstructed phase image can visualize the nanometer unevenness in a sample.
ABRAHAM, Emmanuel   +14 more
core   +2 more sources

Special Issue on Digital Holographic 3D Imaging: Capture, Display, and Evaluation

open access: yesETRI 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
doaj   +1 more source

Applications of Digital Holography: From Microscopy to 3D-Television [PDF]

open access: yesJournal of the European Optical Society-Rapid Publications, 2012
The paper gives an overview of the applications of digital holography based on the one hand on CCD-recording, computer storage, and numerical reconstruction of the wave fields, and on the other hand on numerical calculation of computer generated ...
Kreis T.
doaj   +1 more source

Iterative phase retrieval for digital holography: tutorial. [PDF]

open access: yesJournal of The Optical Society of America A-optics Image Science and Vision, 2019
This paper provides a tutorial of iterative phase retrieval algorithms based on the Gerchberg-Saxton (GS) algorithm applied in digital holography. In addition, a novel GS-based algorithm that allows reconstruction of 3D samples is demonstrated.
T. Latychevskaia
semanticscholar   +1 more source

A holographic system for subsea recording and analysis of plankton and other marine particles [PDF]

open access: yes, 2003
We report here details of the design, development, initial testing and field-deployment of the HOLOMAR system for in-situ subsea holography and analysis of marine plankton and nonliving particles.
Alexander, S   +18 more
core   +1 more source

Digital holography in production: an overview

open access: yesLight: Advanced Manufacturing, 2020
Many challenging measurement tasks in production simultaneously have high requirements for accuracy, measurement field size, lateral sampling, and measurement time.
M. Fratz, T. Seyler, A. Bertz, D. Carl
semanticscholar   +1 more source

Digital Holographic Printing Methods for 3D Visualization of Cultural Heritage Artifacts

open access: yesDigital Presentation and Preservation of Cultural and Scientific Heritage, 2014
Holography enables capture and reconstruction of the optical field scattered from three-dimensional (3D) objects. The hologram encodes both amplitude and phase of the field under coherent illumination, whereas photography records only the amplitude by ...
Hoonjong Kang   +9 more
doaj   +1 more source

On-chip differential interference contrast microscopy using lensless digital holography. [PDF]

open access: yes, 2010
We introduce the use of a birefringent crystal with lensless digital holography to create an on-chip differential interference contrast (DIC) microscope.
Isikman, Serhan O   +3 more
core   +1 more source

Digital Polarization Holography: Challenges and Opportunities

open access: yesEngineering Proceedings, 2023
Polarization has a profound impact on image quality and visual perception. For instance, polarization provides a new perspective on seeing an object which is otherwise obscured, low contrast or not measurable by conventional imaging methods.
Rakesh Kumar Singh
doaj   +1 more source

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