Results 11 to 20 of about 2,784,941 (298)
Bimodal Incoherent Digital Holography for Both Three-Dimensional Imaging and Quasi-Infinite-Depth-of-Field Imaging. [PDF]
Sci Rep, 2019 Although three-dimensional (3D) imaging and extended depth-of-field (DOF) imaging are completely opposite techniques, both provide much more information about 3D scenes and objects than does traditional two-dimensional imaging.
Nobukawa T +4 more
europepmc +2 more sources
Digital holography data compression [PDF]
Telfor Journal, 2018 Digital holography processing is a research topic related to the development of novel visual immersive applications. The huge amount of information conveyed by a digital hologram and the different properties of holographic data with respect to conventional photographic data require a comprehension of the performances and limitations of current image ...
R. Corda
openaire +3 more sources
Incoherent Digital Holography: A Review
Applied Sciences, 2018 Digital holography (DH) is a promising technique for modern three-dimensional (3D) imaging. Coherent holography records the complex amplitude of a 3D object holographically, giving speckle noise upon reconstruction and presenting a serious drawback ...
Jung-Ping Liu +3 more
semanticscholar +3 more sources
Applied Sciences, 2020 In this work, the method of IR digital holography intended for detection of volumetric defects in ZnGeP2 single crystals has been tested. The holographic method is verified by a comparison of the results obtained with the data obtained by other methods ...
V. Dyomin +7 more
semanticscholar +3 more sources
Convolutional Neural Network (CNN) vs Vision Transformer (ViT) for Digital Holography [PDF]
2022 2nd International Conference on Computer, Control and Robotics (ICCCR), 2021 In Digital Holography (DH), it is crucial to extract the object distance from a hologram in order to reconstruct its amplitude and phase. This step is called auto-focusing and it is conventionally solved by first reconstructing a stack of images and then
Stéphane Cuenat, R. Couturier
semanticscholar +1 more source
Speckle Noise Reduction in Digital Holography by 3D Adaptive Filtering. [PDF]
Sensors (Basel)Digital holography enables the reconstruction of both 2D and 3D object information from interference patterns captured by digital cameras. A major challenge in this field is speckle noise, which significantly degrades the quality of the reconstructed ...
Kerov AA +8 more
europepmc +2 more sources
digHolo : High-speed library for off-axis digital holography and Hermite-Gaussian decomposition [PDF]
Digital Holography and 3-D Imaging 2022, 2022 digHolo is an open-source library for reconstructing optical fields using off-axis digital holography. The library is particularly efficient at decomposing fields into Hermite-Gaussian coefficients and related bases.
J. Carpenter
semanticscholar +1 more source
Design of broadband terahertz vector and vortex beams: II. Holographic assessment
Light: Advanced Manufacturing, 2022 In this paper, we demonstrate the capabilities of the terahertz pulse time-domain holography in visualisation, simulation, and assessment of broadband THz vortex beam formation dynamics upon its shaping by elements of beam converter, and further ...
Nikolay V. Petrov +4 more
doaj +1 more source
Emerging scientific and industrial applications of digital holography: an overview
Engineering Research Express, 2023 Holography is a technique to record and reconstruct three dimensional (3D) information without mandating lenses. Digital holography (DH) provides direct access to the complex amplitude of the reconstructed wavefront.
Raj Kumar, G. Dwivedi
semanticscholar +1 more source
Design of broadband terahertz vector and vortex beams: I. Review of materials and components
Light: Advanced Manufacturing, 2022 In this paper, we review the existing approaches for vortex and vector beam shaping and generation in the terahertz frequency range. The particular focus of this review is on the possibility of homogeneous topological charge formation in the ultra-wide ...
Nikolay V. Petrov +4 more
doaj +1 more source