Results 31 to 40 of about 1,828 (164)
Approximated Wavefront Composition for Computer-Generated Holograms Based on Tiny Logic Operations
IEEE Access, 2023 Accelerating the calculation of computer-generated holograms (CGHs) is an urgent requirement for realizing practical electro-holography for three-dimensional (3D) displays.
Takashi Nishitsuji +3 more
doaj +1 more source
Space–Bandwidth Product Extension for Holographic Displays Through Cascaded Wavefront Modulation
Applied SciencesThe immersive experience of holographic displays is fundamentally limited by their space–bandwidth product (SBP), which imposes an inherent trade-off between the field of view (FOV) and eyebox size.
Shenao Zhang +6 more
doaj +1 more source
Nanophotonics, 2020 As one of the cutting-edge technologies in advanced information science, wave-based cryptography is a prerequisite to enable a plethora of secure encrypting platforms which can be realized by smart multiplexing techniques together with suitable ...
Rajabalipanah Hamid +5 more
doaj +1 more source
Photonics, 2021 Photocurable three-dimensional (3D) printing is a stepwise layer-by-layer fabrication process widely used in the manufacture of highly specialized objects.
Chung-Fei Lee +3 more
doaj +1 more source
Generation of optical phase singularities by computer-generated holograms [PDF]
Optics Letters, 1992 Laser beams that contain phase singularities can be generated with computer-generated holograms, which in the simplest case have the form of spiral Fresnel zone plates.
Heckenberg, NR +3 more
openaire +5 more sources
Time-Division Color Holographic Projection in Large Size Using a Digital Micromirror Device
Applied Sciences, 2021 Holographic projection is a simple projection as it enlarges or reduces reconstructed images without using a zoom lens. However, one major problem associated with this projection is the deterioration of image quality as the reconstructed image enlarges ...
Takayuki Takahashi +3 more
doaj +1 more source
Color multilayer holographic near-eye augmented reality display
Scientific Reports, 2023 This study demonstrates a full-color near-eye holographic display capable of superimposing color virtual scenes with 2D, 3D, and multiple objects with extended depth upon a real scene, which also has the ability to present different 3D information ...
Alejandro Velez-Zea +1 more
doaj +1 more source
Optimization of Phase-Only Computer-Generated Holograms Based on the Gradient Descent Method
Applied Sciences, 2020 The Gerchberg–Saxton (GS) algorithm is a Fourier iterative algorithm that can effectively optimize phase-only computer-generated holograms (CGHs). This study proposes a new optimization technique for phase-only CGHs based on the gradient descent method ...
Shujian Liu, Yasuhiro Takaki
doaj +1 more source
Computer-Generated Holograms for 3D Imaging
ACM Computing Surveys, 2020 Holography is usually considered as the ultimate way to visually reproduce a three-dimensional scene. Computer-generated holography constitutes an important branch of holography, which enables visualization of artificially generated scenes as well as real three-dimensional scenes recorded under white-light illumination.
Erdem Sahin +3 more
openaire +2 more sources
EFFECT OF OBJECT REPRESENTATION FORM ON DEPTH RESOLUTION OF RESTORED IMAGES OBTAINED BY SYNTHESIZED FRESNEL HOLOGRAMS [PDF]
Научно-технический вестник информационных технологий, механики и оптики, 2019 Subject of the Research. The paper presents the study on the effect of object representation form on the depth resolution of images reconstructed via computer-generated Fresnel holograms-projectors. Method.
Sergey N. Koreshev, Marina A. Frolova
doaj +1 more source