Results 11 to 20 of about 51,169 (250)
Digital Holography as Computer Vision Position Sensor with an Extended Range of Working Distances [PDF]
Sensors, 2018 Standard computer vision methods are usually based on powerful contact-less measurement approaches but applications, especially at the micro-scale, are restricted by finite depth-of-field and fixed working distance of imaging devices.
Miguel Asmad Vergara +3 more
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Digital Holography and Its Application
Applied SciencesDigital holography represents a pioneering frontier in optical imaging, intertwining cutting-edge computational approaches with sophisticated optical methodologies [...]
Davood Khodadad
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Roadmap on digital holography [Invited]
Optics Express, 2021 This Roadmap article on digital holography provides an overview of a vast array of research activities in the field of digital holography. The paper consists of a series of 25 sections from the prominent experts in digital holography presenting various aspects of the field on sensing, 3D imaging and displays, virtual and augmented reality, microscopy ...
Bahram Javidi +24 more
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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
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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
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Compression Performance Analysis of Experimental Holographic Data Coding Systems
Sensors, 2023 It is challenging to find a proper way to compress computer-generated holography (CGH) data owing to their huge data requirements and characteristics. This study proposes CGH data coding systems with high-efficiency video coding (HEVC), three-dimensional
Tianyu Dong +3 more
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Scientific Reports, 2022 The paper presents the results of a comprehensive study on the optimization of independent amplitude and phase wavefront manipulation which is implemented using a binary digital micromirror device. The study aims to investigate the spatial resolution and
Alexandra Georgieva +2 more
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Light: Advanced Manufacturing, 2022 Since its invention, holography has been mostly applied at visible wavelengths in a variety of applications. Specifically, non-destructive testing of manufactured objects was a driver for developing holographic methods and all related ones based on the ...
Marc Georges +2 more
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Digital Plasmonic Holography [PDF]
Imaging and Applied Optics 2018 (3D, AO, AIO, COSI, DH, IS, LACSEA, LS&C, MATH, pcAOP), 2018 AbstractWe demonstrate digital plasmonic holography for direct in-plane imaging with propagating surface-plasmon waves. Imaging with surface plasmons suffers from the lack of simple in-plane lenses and mirrors. Lens-less digital holography techniques, however, rely on digitally decoding an interference pattern between a reference wave and an object ...
Joseph W. Nelson +3 more
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Robust Holographic Reconstruction by Deep Learning with One Frame
Photonics, 2023 A robust method is proposed to reconstruct images with only one hologram in digital holography by introducing a deep learning (DL) network. The U-net neural network is designed according to DL principles and trained by the image data set collected using ...
Xianfeng Xu +3 more
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