Results 11 to 20 of about 38,998 (289)
Open-Set Learning-Based Hologram Verification System Using Generative Adversarial Networks
IEEE Access, 2022 In this study, we address the hologram authenticity challenge by introducing a novel deep-learning based end-to-end hologram verification system. The system ultimately makes the decision whether the hologram image captured from a mobile application is ...
Betul Ay
doaj +1 more source
A quantum volume hologram [PDF]
, 2009 We propose a new scheme for parallel spatially multimode quantum memory for light. The scheme is based on counter-propagating quantum signal wave and strong classical reference wave, like in a classical volume hologram, and therefore can be called a ...
Denis V. Vasilyev +4 more
core +1 more source
Randomness assisted in-line holography with deep learning
Scientific Reports, 2023 We propose and demonstrate a holographic imaging scheme exploiting random illuminations for recording hologram and then applying numerical reconstruction and twin image removal.
Manisha +4 more
doaj +1 more source
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
Volume Holographic Hyperspectral Imaging [PDF]
, 2004 A volume hologram has two degenerate Bragg-phase-matching dimensions and provides the capability of volume holographic imaging. We demonstrate two volume holographic imaging architectures and investigate their imaging resolution, aberration, and ...
Barbastathis, George +2 more
core +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
Simulations of coronagraphy with a dynamic hologram for the direct detection of exo-planets [PDF]
, 2010 In a previous paper, we discussed an original solution to improve the performances of coronagraphs by adding, in the optical scheme, an adaptive hologram removing most of the residual speckle starlight.
Coroller, Hervé Le +3 more
core +1 more source
Compression of Phase-Only Holograms with JPEG Standard and Deep Learning
Applied Sciences, 2018 It is a critical issue to reduce the enormous amount of data in the processing, storage and transmission of a hologram in digital format. In photograph compression, the JPEG standard is commonly supported by almost every system and device.
Shuming Jiao +5 more
doaj +1 more source
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
Sub-Terahertz Computer Generated Hologram with Two Image Planes
Applied Sciences, 2019 An advanced optical structure such as a synthetic hologram (also called a computer-generated hologram) is designed for sub-terahertz radiation. The detailed design process is carried out using the ping-pong method, which is based on the modified ...
Mateusz Surma +3 more
doaj +1 more source