Results 11 to 20 of about 586,449 (202)

Ghost Imaging Using Optical Correlations [PDF]

open access: yesLaser & Photonics Reviews, 2017
AbstractGhost imaging uses optical correlations to enable an alternative and intriguing image acquisition technique: even though information from either one of the detectors used for the acquisition does not yield an image, an image can be obtained by harnessing the optical correlations.
Moreau, Paul-Antoine   +3 more
openaire   +2 more sources

Image correlators using optical memory disks [PDF]

open access: yesOptics Letters, 1989
Image correlators are described and experimentally demonstrated that are implemented using optical memory disks to store a large library of reference images.
D, Psaltis, M A, Neifeld, A, Yamamura
openaire   +2 more sources

Changing image of correlation optics: introduction [PDF]

open access: yesApplied Optics, 2016
This feature issue of Applied Optics contains a series of selected papers reflecting recent progress of correlation optics and illustrating current trends in vector singular optics, internal energy flows at light fields, optical science of materials, and new biomedical applications of lasers.
Angelsky, Oleg V.   +7 more
openaire   +3 more sources

Digital image correlation–based optical coherence elastography [PDF]

open access: yesJournal of Biomedical Optics, 2013
Optical coherence elastography (OCE) provides deformation or material properties, mapping of soft tissue. We aim to develop a robust speckle tracking OCE technique with improved resolution and accuracy. A digital image correlation (DIC)-based OCE technique was developed by combining an advanced DIC algorithm with optical coherence tomography (OCT ...
Cuiru, Sun   +4 more
openaire   +2 more sources

Image Quality Assessment for Digital Volume Correlation-Based Optical Coherence Elastography

open access: yesPhotonics, 2022
Optical coherence elastography (OCE) based on digital volume correlation (DVC) has the advantages of full 3D displacements and strain tensor quantification.
Xianglong Lin   +6 more
doaj   +1 more source

Optical surface evaluation by correlating bi-Ronchigram images [PDF]

open access: yesOptical Engineering, 2014
This procedure correlates experimental and simulated bironchigram images in order to estimate conic constant, paraxial curvature radius and error function of any reflecting surface. No interference orders and integration are used. Article not available.
Alberto Cordero-Davila   +1 more
openaire   +2 more sources

High optical contrast nanoimprinted speckle patterns for digital image correlation analysis

open access: yesMicro and Nano Engineering, 2022
For the characterization of the mechanical deformation of materials at microscopic length scales, image processing of a high-quality surface pattern was used.
E.C. Kursun   +4 more
doaj   +1 more source

River Surface Velocimetry Based on Virtual River Dataset and Modulated-RAFT

open access: yesIEEE Access, 2023
In recent years, there has been a surge of interest in image-based velocimetry methods for river surface velocity (RSV) estimation due to their efficiency and accuracy, including large-scale particle image velocimetry (LSPIV), space-time image ...
Yixin Wu   +5 more
doaj   +1 more source

Geometrical optics in correlated imaging systems [PDF]

open access: yesPhysical Review A, 2005
We discuss the geometrical optics of correlated imaging for two kinds of spatial correlations corresponding, respectively, to a classical thermal light source and a quantum two-photon entangled source. Due to the different features in the second-order spatial correlation, the two sources obey different imaging equations.
De-Zhong Cao, Jun Xiong, Kaige Wang
openaire   +1 more source

Temporal Co-Attention Guided Conditional Generative Adversarial Network for Optical Image Synthesis

open access: yesRemote Sensing, 2023
In the field of SAR-to-optical image synthesis, current methods based on conditional generative adversarial networks (CGANs) have satisfying performance under simple scenarios, but the performance drops severely under complicated scenarios.
Yongchun Weng   +7 more
doaj   +1 more source

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