Results 1 to 10 of about 5,099,090 (216)

Lensless Scheme for Measuring Laser Aberrations Based on Computer-Generated Holograms [PDF]

open access: yesSensors, 2020
All of the existing holographic wavefront sensors are either bulky or have low accuracy of measuring wavefront aberrations. In this paper, we present an improvement of the holographic method of measuring wavefront aberrations using computer-generated ...
George Krasin   +4 more
doaj   +4 more sources

Diffractive Sensor Elements for Registration of Long-Term Instability at Writing of Computer-Generated Holograms [PDF]

open access: yesSensors, 2021
The research and development of methods using of the specialized diffractive microstructure sensors embedded in the pattern of computer-generated holograms (CGH) manufactured on circular and X-Y laser writing systems is discussed.
Ruslan V. Shimansky   +3 more
doaj   +2 more sources

Fast Calculation of Computer Generated Holograms for 3D Photostimulation through Compressive-Sensing Gerchberg–Saxton Algorithm [PDF]

open access: yesMethods and Protocols, 2018
The use of spatial light modulators to project computer generated holograms is a common strategy for optogenetic stimulation of multiple structures of interest within a three-dimensional volume.
Paolo Pozzi   +6 more
doaj   +2 more sources

Computer-Generated Holograms Application in Security Printing

open access: yesApplied Sciences, 2022
In the present article the application of computer-generated holograms in security printing was considered. The main subject was creation of informative memory marks based on CGH for automatic read out of the information embedded in this marks that can ...
Evgenii Y. Zlokazov   +3 more
doaj   +2 more sources

Evaluation of permissible pixel positioning errors for displaying computer-generated holograms in projection photolithography [PDF]

open access: yesНаучно-технический вестник информационных технологий, механики и оптики, 2021
The authors carried out the estimation of the permissible positioning errors when displaying reflective phase holograms intended for application in holographic photolithography on solid media using electron-beam lithography devices.
Sergey N. Koreshev   +2 more
doaj   +3 more sources

Generation of Multiple‐Depth 3D Computer‐Generated Holograms from 2D‐Image‐Datasets Trained CNN [PDF]

open access: yesAdvanced Science
Generating computer‐generated holograms (CGHs) for 3D scenes by learning‐based methods can reconstruct arbitrary 3D scenes with higher quality and faster speed. However, the homogenization and difficulty of obtaining 3D high‐resolution datasets seriously
Xingpeng Yan   +10 more
doaj   +2 more sources

Optimization of Phase-Only Computer-Generated Holograms Based on the Gradient Descent Method

open access: yesApplied 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   +3 more sources

Binary Computer-Generated Holograms by Simulated-Annealing Binary Search

open access: yesPhotonics, 2022
The binary computer-generated hologram (BCGH) has attracted much attention recently because it can address the high-speed binary spatial light modulator (SLM), such as a digital micromirror device (DMD) SLM.
Jung-Ping Liu, Chen-Ming Tsai
doaj   +1 more source

Review of computer-generated hologram algorithms for color dynamic holographic three-dimensional display

open access: yesLight: Science & Applications, 2022
Holographic three-dimensional display is an important display technique because it can provide all depth information of a real or virtual scene without any special eyewear.
Dapu Pi, Juan Liu, Yongtian Wang
doaj   +1 more source

Photorealistic Rapid Computer-Generated Holography Employing an Enhanced Path Tracing Technique With Sequence Generated Trial

open access: yesIEEE Photonics Journal, 2023
Fast holographic generation technology depends on the swift creation of computer-generated holograms (CGHs). Currently, the fast generation method of computer-generated holograms based on ray tracing is still based on non-physical ray tracing methods ...
Xindi Chen   +5 more
doaj   +1 more source

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