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A simplified approach using deep neural network for fast and accurate shape from focus
Microscopy research and technique (Print), 2020Three‐dimensional shape recovery is an important issue in the field of computer vision. Shape from Focus (SFF) is one of the passive techniques that uses focus information to estimate the three‐dimensional shape of an object in the scene.
Husna Mutahira +3 more
semanticscholar +1 more source
Measurements of Plasma Density in a Fast and Compact Plasma Focus Operating at Hundreds of Joules
AIP Conference Proceedings, 2006It is known that there are plasma parameters that remain relatively constant for plasma focus facilities operating in a wide range of de energy, from 1kJ to 1MJ, such as: electron density, temperature and plasma energy density. Particularly the electron density is of the order of 1025m−3.
Cristian Pavez +3 more
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Journal of Fusion Energy, 2011
In this paper, best condition of filling gas pressure and operating voltage for SBUPF1 plasma focus device to have maximum intensity of hard and soft X-ray emission has been reported. For time resolved X-ray detection, PIN detector and fast plastic Scintillator detector with appropriate filters have been used and for time integrated X-ray emission ...
Nikoo Darestani Farahani +2 more
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In this paper, best condition of filling gas pressure and operating voltage for SBUPF1 plasma focus device to have maximum intensity of hard and soft X-ray emission has been reported. For time resolved X-ray detection, PIN detector and fast plastic Scintillator detector with appropriate filters have been used and for time integrated X-ray emission ...
Nikoo Darestani Farahani +2 more
openaire +1 more source
Optimal Sampling for Shape from Focus by Using Gaussian Process Regression
IEEE International Conference on Consumer Electronics, 2020Shape from Focus (SFF) is one of passive optical methods for estimating 3D shape of an object. In SFF, a large number of 2D images with different focus levels are required.
Hoon-Seok Jang +3 more
semanticscholar +1 more source
IEEE Transactions on Plasma Science, 2017
Measured current waveforms at different neon pressures from two different plasma focus (PF) devices, namely, NX2 and NX1 are used for analysis using the Lee code. The model parameters of mass ( $f_{m}$ and $f_{{\text {mr}}}$ ) and current ( $f_{\text {c}}$ and $f_{\mathrm {cr}}$ ) in axial and radial phase, respectively, are ...
Prakash Gautam +3 more
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Measured current waveforms at different neon pressures from two different plasma focus (PF) devices, namely, NX2 and NX1 are used for analysis using the Lee code. The model parameters of mass ( $f_{m}$ and $f_{{\text {mr}}}$ ) and current ( $f_{\text {c}}$ and $f_{\mathrm {cr}}$ ) in axial and radial phase, respectively, are ...
Prakash Gautam +3 more
openaire +1 more source
Focus Measures Assessment for Astronomical Images
2020 International Conference on Innovative Trends in Communication and Computer Engineering (ITCE), 2020Precise focus is an essential step in astronomical research since an accurate measure of celestial objects properties depends on it. This paper presents a performance comparison of different focus measure operators.
I. Helmy, F. Elnagahy, A. Hamdy
semanticscholar +1 more source
Journal of Fusion Energy, 2014
The generation of soft X-rays in a 2.8 kJ plasma focus operated with argon as a filling gas is studied using a system of five pin Si diodes filtered with different thicknesses of Mylar, Aluminium and Copper. Attention is paid to finding the pressure range for highest X-ray emission.
Sh. Al-Hawat, M. Akel, S. Shaaban
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The generation of soft X-rays in a 2.8 kJ plasma focus operated with argon as a filling gas is studied using a system of five pin Si diodes filtered with different thicknesses of Mylar, Aluminium and Copper. Attention is paid to finding the pressure range for highest X-ray emission.
Sh. Al-Hawat, M. Akel, S. Shaaban
openaire +1 more source
Regularity of Maximal Operators: Recent Progress and Some Open Problems
New Trends in Applied Harmonic Analysis, Volume 2, 2019This is an expository paper on the regularity theory of maximal operators, when these act on Sobolev and BV functions, with a special focus on some of the current open problems in the topic. Overall, a list of fifteen research problems is presented.
E. Carneiro
semanticscholar +1 more source
Focus Relationship Perception for Unsupervised Multi-Focus Image Fusion
IEEE transactions on multimediaMulti-focus image fusion can extract the focus regions from different source images and combine them into a fully clear image. Existing unsupervised methods typically use gradient information to measure the focus regions in images and generate a fusion ...
Jinyang Liu +3 more
semanticscholar +1 more source
Nuclear Technology - Fusion, 1983
The ratio R(D-D)/R(D-/sup 3/He) of yields of fusion reactions was used as a diagnostic tool for studying the effective ion energy of plasma produced in the 1-MJ plasma focus device at Frascati. The device is operated in the neutron-optimized mode at energies of 250, 390, and 490 kJ.
Jan S. Brzosko +6 more
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The ratio R(D-D)/R(D-/sup 3/He) of yields of fusion reactions was used as a diagnostic tool for studying the effective ion energy of plasma produced in the 1-MJ plasma focus device at Frascati. The device is operated in the neutron-optimized mode at energies of 250, 390, and 490 kJ.
Jan S. Brzosko +6 more
openaire +1 more source