Results 21 to 30 of about 3,896,846 (293)

Evaluation of high-quality image reconstruction techniques applied to high-resolution Z-contrast imaging

Ultramicroscopy, 2017
High-quality image reconstruction techniques allow the generation of high pixel density images from a set of low-resolution micrographs. In general, these techniques consist of two main steps, namely, accurate registration, and formulation of an appropriate forward image model via some restoration method.
Barcena González, Guillermo, Guerrero Lebrero, María de la Paz, Guerrero Vázquez, Elisa, Yañez Escolano, Andrés, Fernández de los Reyes, Daniel, González Robledo, David, Galindo Riaño, Pedro Luis   +6 more
openaire   +3 more sources

A High-precision Technique to Correct for Residual Atmospheric Dispersion in High-contrast Imaging Systems

Publications of the Astronomical Society of the Pacific, 2016
8 Pages, 10 figures, accepted to ...
Pathak, P., Guyon, O., Jovanovic, N., Lozi, J., Martinache, Frantz, Minowa, Y., Kudo, T., Takami, H., Hayano, Y., Narita, N.   +9 more
openaire   +3 more sources

The LAOG-Planet Imaging Surveys [PDF]

, 2009
With the development of high contrast imaging techniques and infrared detectors, vast efforts have been devoted during the past decade to detect and characterize lighter, cooler and closer companions to nearby stars, and ultimately image new planetary ...
A.-M. Lagrange, B. Zuckerman, C. Dumas, D. Ehrenreich, D. Gratadour, D. Mouillet, D. Rouan, F. Allard, G. Chauvin, H. Beust, I. Song, J. Farihi, J.-L. Beuzit, M. Bessel, M. Bonavita, M. Bonnefoy, M. Mayor, Miki Ishii, Motohide Tamura, P. Lowrance, S. Desidera, S. Udry, T. Fusco, Tomonori Usuda   +23 more
core   +2 more sources

Near-infrared Hong-Ou-Mandel interference on a silicon quantum photonic circuit [PDF]

, 2012
Near-infrared Hong-Ou-Mandel quantum interference is observed in silicon nanophotonic directional couplers with raw visibilities on-chip at 90.5%. Spectrally-bright 1557-nm two-photon states are generated in a periodically-poled KTiOPO4 waveguide chip ...
Englund, Dirk R., Kocaman, Serdar, Kwong, Dim-Lee, Liang, Junlin, Lo, Guo-Qiang, Wong, Chee Wei, Wong, Franco N. C., Xie, Zhenda, Xu, Xinan, Yu, Mingbin, Zheng, Jiangjun, Zhong, Tian   +11 more
core   +2 more sources

Asymptotic expansions for high-contrast elliptic equations

, 2012
In this paper, we present a high-order expansion for elliptic equations in high-contrast media. The background conductivity is taken to be one and we assume the medium contains high (or low) conductivity inclusions. We derive an asymptotic expansion with
Calo, Victor M., Efendiev, Yalchin, Galvis, Juan   +2 more
core   +1 more source

Recurrence Quantification Analysis as a Post-processing Technique in Adaptive Optics High-contrast Imaging [PDF]

The Astrophysical Journal, 2018
Abstract In this work we explore the possibility of using recurrence quantification analysis (RQA) in astronomical high-contrast imaging to statistically discriminate the signal of faint objects from speckle noise. To this end, we tested RQA on a sequence of high frame rate (1 kHz) images acquired with the SHARK-VIS forerunner at the ...
M. Stangalini, G. Li Causi, F. Pedichini, S. Antoniucci, M. Mattioli, J. Christou, G. Consolini, D. Hope, S. M. Jefferies, R. Piazzesi, V. Testa   +10 more
openaire   +2 more sources

HD 179949b - a close orbiting extrasolar giant planet with a stratosphere? [PDF]

, 2008
The original article can be found at: http://www3.interscience.wiley.com Copyright Blackwell Publishing. DOI: 10.1111/j.1365-2966.2008.13831.xWe have carried out a search for the 2.14-μm spectroscopic signature of the close orbiting extrasolar giant ...
Barber, R.J., Barman, T.S., Barnes, J.R., Cameron, A.C., Jones, H.R.A., Leigh, C.J., Pinfield, D.J.   +6 more
core   +2 more sources

Keck Primary Mirror Closed-loop Segment Control Using a Vector-Zernike Wavefront Sensor

The Astrophysical Journal
We present the first on-sky segmented primary mirror closed-loop piston control using a Zernike wavefront sensor (ZWFS) installed on the Keck II telescope.
Maïssa Salama, Charlotte Guthery, Vincent Chambouleyron, Rebecca Jensen-Clem, J. Kent Wallace, Jacques-Robert Delorme, Mitchell Troy, Tobias Wenger, Daniel Echeverri, Luke Finnerty, Nemanja Jovanovic, Joshua Liberman, Ronald A. López, Dimitri Mawet, Evan C. Morris, Maaike van Kooten, Jason J. Wang, Peter Wizinowich, Yinzi Xin, Jerry Xuan   +19 more
doaj   +1 more source

Temporal contrast reduction techniques for high dynamic-range single-shot temporal contrast measurement

, 2019
29 pages, 7 ...
Shen, Xiong, Wang, Peng, Zhu, Jingxin, Si, Zhe, Zhao, Yuxia, Liu, Jun, Li, Ruxin   +6 more
openaire   +2 more sources

European Standard Clinical Practice Guideline and EXPeRT Recommendations for the Diagnosis and Management of Gastroenteropancreatic Neuroendocrine Neoplasms in Children and Adolescents

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Pediatric gastroenteropancreatic neuroendocrine neoplasms (GEP‐NENs) are extremely rare and clinically heterogeneous. Management has largely been extrapolated from adult practice. This European Standard Clinical Practice Guideline (ESCP), developed by the EXPeRT network in collaboration with adult NEN experts, provides (adult) evidence ...
Michaela Kuhlen, Calogero Virgone, Antje Redlich, Michael Abele, Ricardo Lopez‐Almaraz, Tal Ben‐Ami, Ewa Bien, Gianni Bisogno, Maja Mazic Cesen, Andrea Ferrari, Malgorzata A. Krawczyk, Yves Reguerre, Dominik T. Schneider, Ines B. Brecht, Charlotte Rigaud, Bilgehan Yalcin, Rainer Claus, Christian Vokuhl, Constantin Lapa, Jörg Fuchs, Segolene Hescot, Thomas Walter, Julien Hadoux, Daniel Orbach   +23 more
wiley   +1 more source