Results 151 to 160 of about 28,100 (252)

An Application of Laser Holography to Measurement of Particle Location and Velocity [PDF]

, 2000
This paper describes an application of laser holography and image processing for measuring partic1e locations. It is known that the reconstructed images of objects expand in the depth direction of the object beam, when laser holography is applied to ...
太田, 淳一, 山本, 富士夫, 篠田, 圭司   +2 more
core  

Numerical Optics in Digital Holography [PDF]

As digital holography achieves numerical reconstruction of the complex wavefront diffracted by specimen, a numerical optics formalism has been developed: numerical filters replace pinholes in Fourier planes, numerical lenses allow aberrations ...
Depeursinge, Christian, Montfort, Frédéric, Colomb, Tristan, Charrière, Florian, Kühn, Jonas   +4 more
core   +1 more source

Single to multiple digital holograms for phase compensation and defect detection

Frontiers in Photonics
Digital holography enables quantitative phase imaging based on interference. A digital hologram often encodes the phase information along with aberrations or deformations.
Zhenkai Chen, Wenjing Zhou, Zhou Ge, Yingjie Yu, Hongbo Zhang, Ting-Chung Poon   +5 more
doaj   +1 more source

Topologically Structured Light in Nanophotonics

Nanophotonics, Volume 15, Issue 13, 13 July 2026.
Yijie Shen, Qiwen Zhan, Harald Giessen
wiley   +1 more source

Acousto-optic and electro-optic modulation for multi-wavelength holography [PDF]

Multi-wavelength holography is a convenient method for the inline inspection of industrially machined parts. Compared with the single-wavelength approach, the unambiguity range can be extended by orders of magnitude.
Carl, Daniel, Breunig, Ingo, Bertz, Alexander, Seyler, Tobias, Kiessling, Jens, Voßgrag, Leonard   +5 more
core   +1 more source

Portable Filter-Free Lens-Free Incoherent Digital Holography System

Photonics
A portable incoherent digital holography system without a polarization filter or a refractive lens was developed. Phase-shifted self-interference incoherent holograms of light diffracted from an object were generated without attenuation due to a ...
Tatsuki Tahara
doaj   +1 more source

Abstract Holography

Journal of Mathematical Analysis and Applications, 1980
AbstractThe problem that is presented and investigated is a natural nonlinear extension of the following linear problem. Let H ⊕ H′ and K ⊕ K′ be two orthogonal Hilbert decompositions of a real Hilbert space X. Let P, P′, Q, Q′ and N′ be the operators of orthogonal projection of X onto H, H′, K, K′ and H′ ∩ K′ respectively.
openaire   +2 more sources

Observation on Use of Holography External Treatment to Relieve Pain in Post-operation Patients With Anal Diseases

Huli yanjiu, 2000
In view of post-operation pain in patients with anus diseases, holography treatment was used. Effects were observed and compared it with those patients relieved pain by taking analgesic orally.
宋剑萍, 殷翠云, 陈传珍
doaj  

METHOD FOR PLANE NEAR-FIELD ACOUSTIC HOLOGRAPHY BASED ON COMPRESSIVE SAMPLING AND ITS APPLICATION

Jixie qiangdu, 2016
In traditional plane near-field acoustic holography reconstruction process,regardless of wave number domain filter or regularization method,they cannot solve their own ill-posed problem,and thus cannot improve the reconstruction accuracy.
DU Bao, LUO Jian, HU Fei, LIU XiaoQin, WU Xing   +4 more
doaj  

Automated HER2 Scoring with Uncertainty Quantification Using Lensfree Holography and Deep Learning. [PDF]

BME Front
Shen CY, Yang X, Li Y, Lenk L, Ji Z, Ozcan A.   +5 more
europepmc   +1 more source