نتایج جستجو برای: high resolution

تعداد نتایج: 2185897  

2004
M. A. Pérez - Torres J. M. Marcaide A. Alberdi E. Ros J. C. Guirado L. Lara F. Mantovani C. J. Stockdale K. W. Weiler P. J. Diamond S. D. Van Dyk P. Lundqvist N. Panagia I. I. Shapiro

The high resolution obtained through the use of VLBI gives an unique opportunity to directly observe the interaction of an expanding radio supernova with its surrounding medium. We present here results from our VLBI observations of the young supernovae SN 1979C, SN 1986J, and SN 2001gd.

1996
P. Roca i Cabarrocas S. Hamma A. Hadjadj J. Andreu

Spectroscopic ellipsometry and high resolution transmission electron microscopy have been used to characterize microcrystalline silicon films. We obtain an excellent agreement between the multilayer model used in the analysis of the optical data and the microscopy measurements. Moreover, thanks to the high resolution achieved in the microscopy measurements and to the improved optical models, tw...

2002
Grigorios Karangelis Stelios Zimeras

With the modern treatment planning techniques the accurate definition of the target volume as well as the organs at risk is a crucial step for the treatment outcome. One of the key organs that must be protected during the irradiation treatment is the spinal cord. Nowadays, high resolution computed tomography (CT) data are required to perform accurate treatment planning, and there is the demand ...

Journal: :Computers & Graphics 2012
Noura Faraj Jean-Marc Thiery Tamy Boubekeur

We propose VoxMorph, a new interactive freeform deformation tool for high resolution voxel grids. Our system exploits cages for high-level deformation control. We tackle the scalability issue by introducing a new 3-scale deformation algorithm composed of a high quality as-rigid-as possible deformation at coarse scale, a quasi-conformal space deformation at mid-scale and a new deformation-adapti...

Journal: :J. Electronic Imaging 1999
Françoise J. Prêteux Catalin I. Fetita André Capderou Philippe Grenier

In this paper, we address bronchi segmentation in high resolution computerized tomography (HRCT) in order to estimate the bronchial caliber. The method developed is based on mathematical morphology theory, and relies on morphological filtering, marking techniques derived from the concept of connection cost, and conditional watershed. In order to evaluate the robustness of the segmentation and t...

1999
J. DEN JAN SIJBERS

Using parameter estimation theory, an expression is derived for the maximum precision with which the position of a single atom can be estimated from high resolution transmission electron microscopy images. This expression, being a complicated function of the object as well as of the microscope parameters and the electron dose, can be used to optimize the design of an HREM experiment so as to at...

1997
M. Murayama K. Hono M. Saga M. Kikuchi

Pre-precipitation stages of Al-0.70Mg-0.33Si and Al-0.65Mg-0.70Si (at.%) alloys have been investigated by atom probe field ion microscopy (APFIM) and high resolution transmission electron microscopy (HREM). Atom probe results show that clusters of Mg atoms are present in the asquenched state. After a prolonged aging at room temperature, clusters of Mg, Si and their co-clusters are detected, alt...

2016
Mathieu Grossard Micky Rakotondrabe Delbert Tesar

Mathieu Grossard 1 and Micky Rakotondrabe 2,* 1 Interactive Robotics Laboratory (IRL) CEA LIST DIGITEO Labs, Rue Noetzlin, Bâtiment 660, 91190 Gif sur Yvettes, France; [email protected] 2 Department of Automatic Control and MicroMechatronic Systems (AS2M) FEMTO-ST Institute CNRS UMR6174—University of Franche-Comté at Besancon-UBFC-ENSMM-UTBM, 25000 Besancon, France * Correspondence: mrako...

2014
Alan Gevins

High temporal resolution is necessary to resolve the rapidly changing patterns of brain activity underlying mental function. While electroencephalography (EEG) provides temporal resolution in the millisecond-range, which would seem to make it an ideal complement to other imaging modalities, traditional EEG technology and practice provides insufficient spatial detail to identifu relationships be...

2008
Ken Freeman Joss Bland-Hawthorn

Stellar populations in galaxies are vast repositories of fossil information. In recent years it has become possible to consider high resolution spectroscopic surveys of millions of stars. New high resolution multi-object spectrographs on 4-8m class telescopes (HERMES, WFMOS) will allow us for the first time to make large and detailed chemical abundance surveys of stars in the Galactic disk, bul...

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