Results 111 to 120 of about 705,634 (314)

Heterodyne Holography with full control of both signal and reference arms

, 2015
Heterodyne holography is a variant of phase shifting holography in which reference and signal arms are controlled by acousto optic modulators. In this review paper, we will briefy describe the method and its properties, and we will illustrate its ...
Gross, Michel
core   +3 more sources

Gaze‐Engineered 3D Augmented Reality

Advanced Intelligent Systems, EarlyView.
Augmented Reality (AR) systems serve as a critical interface bridging users with the metaverse. This study explores the application of human factors engineering in metaverse development, specifically investigating the integration of eye‐tracking technology to enhance AR display performance.
Naiqin Zhao, Jiasheng Xiao, Runze Zhu, Hao Zhang   +3 more
wiley   +1 more source

Holographic memory with localized recording [PDF]

, 2001
We experimentally demonstrate and characterize a memory module that features selective page erasure and readout persistence using the localized recording method in doubly doped LiNbO3.
Moser, Christophe, Psaltis, Demetri
core  

Pixel super-resolution for lens-free holographic microscopy using deep learning neural networks.

Optics Express, 2019
Lens-free holographic microscopy (LFHM) provides a cost-effective tool for large field-of-view imaging in various biomedical applications. However, due to the unit optical magnification, its spatial resolution is limited by the pixel size of the imager ...
Zhenxiang Luo, A. Yurt, R. Stahl, A. Lambrechts, Veerle Reumers, D. Braeken, L. Lagae   +6 more
semanticscholar   +1 more source

Memory‐Reduced Convolutional Neural Network for Fast Phase Hologram Generation

Advanced Intelligent Systems, EarlyView.
This article reports a lightweight convolutional neural network framework using INT8 quantization to efficiently generate 3D computer‐generated holograms from a single 2D image. The quantized model reduces memory usage and computational cost, accelerates inference speed, and maintains high output quality, enabling real‐time holographic display on low ...
Chenliang Chang, Chenzhou Zhao, Bo Dai, Qi Wang, Dawei Zhang, Songlin Zhuang, Chao Ping Chen   +6 more
wiley   +1 more source

Cross talk in wavelength multiplexed holographic memories [PDF]

, 1992
The cross talk between wavelength-multiplexed holograms is analyzed. The signal-to-noise ratio (SNR) is calculated for a recording schedule that places the center of each image at the null (in wavelength space) of the adjacent hologram.
Curtis, Kevin, Gu, Claire, Psaltis, Demetri   +2 more
core   +1 more source

Real‐Time, Label‐Free Classification of Cell Death Pathways via Holotomography‐Based Deep Learning Framework

Advanced Intelligent Systems, EarlyView.
A 3D holotomography system coupled with a deep learning model distinguishes how cells die—apoptosis, necroptosis or necrosis—without any fluorescent labels. Training on refractive index maps of HeLa cells yields 97% accuracy and flags necroptosis hours before chemical dyes.
Minwook Kim, Wei Sun Park, Geon Kim, Sanggeun Oh, Jaephil Do, Juyeon Park, Jihwan Yu, Won Do Heo, YongKeun Park   +8 more
wiley   +1 more source

A new low-cost, compact, auto-phoropter for refractive assessment in developing countries

Scientific Reports, 2017
Using a phoropter to measure the refractive error is one of the most commonly used methods by ophthalmologists and optometrists. Here, we demonstrate design and fabrication of a portable automatic phoropter with no need for patient’s feedback. The system
Babak Amirsolaimani, Gholam Peyman, Jim Schwiegerling, Arkady Bablumyan, N. Peyghambarian   +4 more
doaj   +1 more source

Label‐Free Holographic Imaging Flow Cytometry With Deep‐Learning‐Based Detection and Classification of Thousands of Cells Per Second

Cytometry Part A, EarlyView.
ABSTRACT We present a new end‐to‐end neural network approach for real‐time biological cell detection and classification via label‐free quantitative imaging flow cytometry based on digital holography, offering a comprehensive representation of cellular structures without the need for chemical cell staining. In contrast to previous studies, our method is
Dana Yagoda‐Aharoni, Eden Dotan, Matan Dudaie, Natan T. Shaked   +3 more
wiley   +1 more source

Holographic Einstein ring in asymptotically safe gravity

European Physical Journal C: Particles and Fields
To address the non-renormalizability issue of general relativity in the realm of quantum gravity, Weinberg first proposed the theory of asymptotically safe gravity.
De-Jiang Qi, Miao Zhang, Guo-Ping Li, Hui-Ling Li   +3 more
doaj   +1 more source