Results 91 to 100 of about 5,115,539 (219)

Computer generated display holography

, 2017
Holografie je speciální zobrazovací metoda umožňující záznam vysoce realistického 3-D obrazu. Navíc má nespočet technických aplikací, například v mikroskopii nebo nedestruktivním testování. Holografie je dvoustupňovým procesem.
Lobaz, Petr
core  

Towards zero-th order free, full field of view, computer generated holography

In this study, we investigate the removal of zero-order diffraction (ZOD) in computer-generated holography (CGH) using a destructive interference approach.
Valentini, Gianluca, Bassi, Andrea, Pozzi, Paolo, Cerioni, Alessandro, Astarita, Marco, Ongarello, Tommaso, Cerullo, Giulio N. F., Cesaratto, Anna   +7 more
core   +1 more source

Nonlocal Leaky Mode Metasurfaces for Mode‐, Angle‐, and Polarization‐Multiplexed Holography With Thermal Light

Laser &Photonics Reviews, EarlyView.
Nonlocal leaky mode metasurfaces reconstruct multiplexed holograms directly from unfiltered thermal light. High‐Q leaky guided modes compress broadband halogen emission into narrowband channels, enhancing temporal coherence a hundredfold, while a single nanohole array encodes independent images addressed by mode, angle, and polarization, establishing ...
Rajat Kumar Sinha, Mo Mojahedi
wiley   +1 more source

Gaussian Wave Splatting for Computer-Generated Holography

ACM Transactions on Graphics
State-of-the-art neural rendering methods optimize Gaussian scene representations from a few photographs for novel-view synthesis. Building on these representations, we develop an efficient algorithm, dubbed Gaussian Wave Splatting, to turn these Gaussians into holograms.
Suyeon Choi, Brian Chao, Jacqueline Yang, Manu Gopakumar, Gordon Wetzstein   +4 more
openaire   +4 more sources

Weak Measurement for Characterizing Effective Jones Matrices of Phase Gradient Metasurfaces

Laser &Photonics Reviews, EarlyView.
Spin dependent deflection from a PB phase gradient metasurface is converted by two dimensional weak measurement into a centroid map, where the amplitude ratio, phase difference, and phase gradient produce distinct spatial features. These effective parameters are then retrieved directly from the centroid response.
Peng Tang, Youngsun Jeon, Xiaoyu Zhao, Ting Wan, Chengle Zhou, Trevon Badloe, Hao Deng, Guoqiang Li, Junsuk Rho   +8 more
wiley   +1 more source

Interpolation-Filtering Method for Image Improvement in Digital Holography

Applied Sciences
Digital holography is actively used for the characterization of objects and 3D-scenes, tracking changes in medium parameters, 3D shape reconstruction, detection of micro-object positions, etc.
Alexander V. Kozlov, Pavel A. Cheremkhin, Andrey S. Svistunov, Vladislav G. Rodin, Rostislav S. Starikov, Nikolay N. Evtikhiev   +5 more
doaj   +1 more source

Imaging Ionic Displacements Across Inclined Ferroelectric Domains by a Reciprocity Approach to 4D‐STEM

Small, EarlyView.
Four‐dimensional STEM comprises a vast portfolio of electron microscopy methods in one data set, conventional plane‐wave illumination TEM being one of them. Here, the principle of reciprocity is employed to produce true structural projections of misoriented ferroelectric domains at atomic resolution. By reciprocal TEM imaging from four‐dimensional STEM
Jean Felix Dushimineza, Max Leo Leidl, Sebastian Sturm, Thibaud Denneulin, Knut Müller‐Caspary   +4 more
wiley   +1 more source

Phase Optimized Computer-Generated Holographic Video Calculation With Frame Interpolation Using Gradient Descent Algorithm

IEEE Access
Computer-generated holography (CGH) has been anticipated in augmented reality (AR) field since it can fully provide multi-depth 3D information to users.
Gyeongsu Jin, Young-Jun Ann, Seung-Yeol Lee   +2 more
doaj   +1 more source

Precise Nanoscale Mapping of Electric Fields Across Random Grain Boundaries in Polycrystalline Oxides Using Precession‐Assisted 4D‐STEM

Small, EarlyView.
Correlative singular value decomposition 4D‐STEM analysis of the potential, electric field, and charge density distributions with crystal orientation, strain across grain boundaries in polycrystalline materials. ABSTRACT Space charge layers (SCLs) at grain boundaries play a crucial role in modulating electric fields and thereby influence functional ...
Sangjun Kang, Hyeyoung Cho, Maximilian Töllner, Anna Rose Nelson, Ziming Ding, Xiaoke Mu, Di Wang, Wolfgang Rheinheimer, Kai Wang, Bai‐Xiang Xu, Jakob Konstantin Laux, Mahmoud Serour, Karsten Albe, Andreas Klein, Christian Kübel   +14 more
wiley   +1 more source

Computer Generated Holograms

, 2010
The presented Diploma thesis deals with the computer-generated diffractive structures or rather called computer generated holograms (CGH). We follow basic principles of classical holography and in the context of which we define a synthetic holography. We
Tvarog, Drahoslav
core