Results 61 to 70 of about 586,449 (202)

Automated Optical Inspection and Image Analysis of Superconducting Radio-Frequency Cavities [PDF]

, 2017
The inner surface of superconducting cavities plays a crucial role to achieve highest accelerating fields and low losses. For an investigation of this inner surface of more than 100 cavities within the cavity fabrication for the European XFEL and the ILC
Wenskat, Marc
core   +2 more sources

Profile and Determinants of Retinal Optical Intensity in Normal Eyes with Spectral Domain Optical Coherence Tomography. [PDF]

PLoS ONE, 2016
PURPOSE:To investigate the profile and determinants of retinal optical intensity in normal subjects using 3D spectral domain optical coherence tomography (SD OCT).
Binyao Chen, Enting Gao, Haoyu Chen, Jianling Yang, Fei Shi, Ce Zheng, Weifang Zhu, Dehui Xiang, Xinjian Chen, Mingzhi Zhang   +9 more
doaj   +1 more source

Spatiogram features to characterize pearls in paintings [PDF]

, 2011
Objective characterization of jewels in paintings, especially pearls, has been a long lasting challenge for art historians. The way an artist painted pearls reflects his ability to observing nature and his knowledge of contemporary optical theory ...
Cornelis, Bruno, Daubechies, Ingrid, De Mey, Marc, Dooms, Ann, Martens, Maximiliaan, Pizurica, Aleksandra, Platisa, Ljiljana, Ruzic, Tijana, Schelkens, Peter   +8 more
core   +2 more sources

Enhancing retinal images by nonlinear registration

, 2014
Being able to image the human retina in high resolution opens a new era in many important fields, such as pharmacological research for retinal diseases, researches in human cognition, nervous system, metabolism and blood stream, to name a few.
Chenegros, Guillaume, Glanc, Marie, Molodij, Guillaume, Ribak, Erez N.   +3 more
core   +3 more sources

Mapping the submillimeter spiral wave in NGC 6946 [PDF]

, 2002
We have analysed SCUBA 850\mum images of the (near) face-on spiral galaxy NGC 6946, and found a tight correlation between dust thermal emission and molecular gas. The map of visual optical depth relates well to the distribution of neutral gas (HI+H2) and
Agladze, Alton, Alton, Alton, Alton, Beck, Beckman, Berlind, Bianchi, Bianchi, Bianchi, Bianchi, Bianchi, Block, Bohlin, Boulanger, Boulanger, Burton, Casey, Casoli, Corradi, D. Pierce-Price, de Jong, Draine, Dumke, Dumke, Dunne, Edmunds, Engargiola, F. Combes, Fall, Frick, Genzel, Gonzalez, Guélin, Guélin, Holland, Hughes, Israel, J. Richer, Jenness, Knapen, Masci, Masi, Mathis, Mauersberger, Neininger, Nieten, P. B. Alton, Peletier, Pierce-Price, Rand, Reach, Rengarajan, S. Bianchi, Sauty, Seigar, Siebenmorgen, Soifer, Sopka, Tacconi, Tacconi, Trewhella, Valentijn, Vila-Costas, Weliachew, White, Williams, Witt, Xilouris   +69 more
core   +3 more sources

Discrete correlators using multiple imaging for digital optical computing [PDF]

Optics Letters, 1991
New optical discrete correlators based on multiple-imaging systems with a simple structure and good stability are proposed. The systems are composed of lenses for image duplication and optical shutters for kernel specification. As a result, large throughput can be attained with an incoherent configuration. The throughput of the system is estimated, and
Tanida, Jun, Ichioka, Yoshiki
openaire   +3 more sources

Enhancing Optical Correlation Decision Performance for Face Recognition by Using a Nonparametric Kernel Smoothing Classification

Sensors, 2019
Optical correlation has a rich history in image recognition applications from a database. In practice, it is simple to implement optically using two lenses or numerically using two Fourier transforms.
Matthieu Saumard, Marwa Elbouz, Michaël Aron, Ayman Alfalou, Christian Brosseau   +4 more
doaj   +1 more source

Roadmap on optical security [PDF]

, 2016
Postprint (author's final ...
Javidi, Bahram, Millán Garcia-Varela, M. Sagrario, Pérez Cabré, Elisabet   +2 more
core   +2 more sources

Optical elastography: tracking surface waves with digital image correlation [PDF]

Physics in Medicine & Biology, 2019
Elastography consists in evaluating the propagation speed of waves into a tissue to estimate its stiffness. Usually this method is based on Ultrasounds, magnetic resonance imaging or optical coherent tomography. This paper proposes a simple optic method using ultrafast cameras.
Ali, Zorgani, Tarek Abdul, Ghafour, Maxime, Lescanne, Stefan, Catheline, Aline, Bel-Brunon   +4 more
openaire   +2 more sources

Selecting the Best Image Pairs to Measure Slope Deformation

Sensors, 2020
Optical remote sensing images can be used to monitor slope deformation in mountain regions. Abundant optical sensors onboard various platforms were designed to provide increasingly high spatial–temporal resolution images at low cost; however, finding the
Wentao Yang
doaj   +1 more source