Results 31 to 40 of about 50,688 (337)
Fast Hologram Calculation Method Based on Wavefront Precise Diffraction
Micromachines, 2023 In this paper, a fast hologram calculation method based on wavefront precise diffraction is proposed. By analyzing the diffraction characteristics of the object point on the 3D object, the effective viewing area of the reproduced image is analyzed. Based
Zimu Wang +4 more
doaj +1 more source
Fourier Convolution Operation on Metasurface-Based Hologram in Microwave Region
Photonics, 2021 In this paper, a 0.1λ0-thick 1-bit coding metasurface is proposed to achieve a polarization-insensitive hologram under oblique incidence, utilizing compact ground-backed patch unit cells.
Shuai Yang +5 more
doaj +1 more source
Spin-Switched Three-Dimensional Full-Color Scenes Based on a Dielectric Meta-hologram
, 2019 The possibility to manipulate light fields with metasurfaces can facilitate more compact and efficient devices for encoding computer-generated holograms.
Hang Feng +13 more
core +2 more sources
Generation of Hybrid Optical Trap Array by Holographic Optical Tweezers
Frontiers in Physics, 2021 Enabled by multiple optical traps, holographic optical tweezers can manipulate multiple particles in parallel flexibly. Spatial light modulators are widely used in holographic optical tweezers, in which Gaussian point (GP) trap arrays or special mode ...
Xing Li +12 more
doaj +1 more source
Practical Method to Screen Contaminated Holograms of Flocs Using Light Intensity
Frontiers in Marine Science, 2021 Submergible digital holographic camera can measure the in situ size and shape of suspended particles, such as complex flocs and biological organisms, without disturbance.
Sun Min Choi +4 more
doaj +1 more source
Bright-field holography: cross-modality deep learning enables snapshot 3D imaging with bright-field contrast using a single hologram [PDF]
Light: Science & Applications, 2018 Digital holographic microscopy enables the 3D reconstruction of volumetric samples from a single-snapshot hologram. However, unlike a conventional bright-field microscopy image, the quality of holographic reconstructions is compromised by interference ...
Yichen Wu +6 more
semanticscholar +1 more source
Proceedings of International Workshop on QCD Green’s Functions, Confinement and Phenomenology — PoS(QCD-TNT09), 2010 We review our recent work on four topics in strong-interaction physics from the perspective of the gauge/gravity correspondence. In particular, we discuss (i) the construction of the ``metric soft wall'' dual for holographic QCD which reproduces the observed linear square-mass trajectories of radially and orbitally excited (light-quark) hadrons, (ii ...
openaire +2 more sources
Generation of Binary Off-axis Digital Fresnel Hologram with Enhanced Quality
ICT Express, 2015 The emergence of high resolution printer and digital micromirror device (DMD) has enabled real, off-axis holograms to be printed, or projected onto a screen.
Peter Wai Ming Tsang
doaj +1 more source
Digital Fresnel Hologram Watermarking [PDF]
, 2010 We present a method of digital hologram watermarking using a Fresnel hologram of a real-world 3D object and the fractional Fourier transform. A watermark is encrypted using double random phase fractional Fourier domain encoding technique and then encoded
Tomi Pitkaaho +5 more
core +1 more source
Non-iterative phase hologram generation with optimized phase modulation.
Optics Express, 2020 A non-iterative algorithm is proposed to generate phase holograms with optimized phase modulation. A quadratic initial phase with continuous distributed spectrum is utilized to iteratively optimize the phase modulation in the reconstruction plane, which ...
Lizhi Chen +3 more
semanticscholar +1 more source