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Comparison of Appearance-Based and Geometry-Based Bubble Detectors
[chapter]
2014
Lecture Notes in Computer Science
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The two common techniques to detect circular objects such as bubbles, the geometry-based and appearance-based approaches, have their advantages and weaknesses. ...
In this paper, we compare a geometry-based concentric circular arrangements (CCA) and appearance-based sliding window methods as well as their combinations in terms of bubble detection, gas volume computation ...
There are two common approaches that are used to detect circular objects: geometry-based and appearance-based approaches. ...
doi:10.1007/978-3-319-11331-9_73
fatcat:g5fwqjkfb5e43noexkti6um4b4
Modeling, analysis and prediction of neutron emission spectra from acoustic cavitation bubble fusion experiments
2008
Nuclear Engineering and Design
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The impact of neutron pulse-pileup during bubble fusion was verified and estimated with pulsed neutron generator based experiments and first-principle calculations. ...
Self-nucleated and external neutron nucleated acoustic (bubble fusion) cavitation experiments have been modeled and analyzed for neutron spectral characteristics at the detector locations for all separate ...
Colin West for improving the quality of the manuscript, and which are deeply appreciated and duly acknowledged. Editorial assistance and encouragement from Prof. G. ...
doi:10.1016/j.nucengdes.2008.06.007
fatcat:thc3yloj7zctlgrwylrtzgmwea
Tensioned Metastable Fluid Detectors in Nuclear Security for Passively Monitoring of Special Nuclear Materials―Part A
2011
World Journal of Nuclear Science and Technology
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This paper (constituting Part A) describes the transformational Tensioned Metastable Fluid Detector (TMFD) based method for "passive" detection of Special Nuclear Materials (SNMs) as related to nuclear ...
These techniques will then be discussed and evaluated in the context of area monitoring in waste processing applications with a focus on passive monitoring of radioactive source particles from SNMs. ...
Additional support was provided by the United States Department of Energy, the Department of Homeland Security, and Purdue University. ...
doi:10.4236/wjnst.2011.13010
fatcat:7dytxvlqozdl5g6g7ohm7pyhhu
A physical zero-knowledge object-comparison system for nuclear warhead verification
2016
Nature Communications
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Here we demonstrate a non-electronic fast neutron differential radiography technique using superheated emulsion detectors that can confirm that two objects are identical without revealing their geometry ...
The possibility of using such proofs to process classified and other sensitive physical data has attracted attention, especially in the field of nuclear arms control. ...
Neutron counts in the detectors are affected by the geometry and physical properties of the item. ...
doi:10.1038/ncomms12890
pmid:27649477
pmcid:PMC5034327
fatcat:ueupneb2qrc5bjenrslnvv6l6q
Development of the High Energy Bremsstrahlung X-Ray Spectrometer by Using (γ, n) Reaction
2014
Plasma and Fusion Research
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A (γ,n) reaction based hard X-ray spectrometer with energy range from 4 MeV to 30 MeV has been developed for Fast Ignition related experiments. ...
The performance was evaluated by using a linear accelerator facility, and the obtained results are in good agreement with Monte-Carlo simulation. ...
Acknowledgments The authors gratefully acknowledge the support of the GEKKO XII operation group, the LFEX development and operation group, the target fabrication group, and the plasma diagnostics operation ...
doi:10.1585/pfr.9.4404112
fatcat:nhlcvhshf5hhveejoxr5xrn5by
Generation and evaluation of an artificial optical signal based on X-ray measurements for bubble characterization in fluidized beds with vertical internals
2018
International Journal of Multiphase Flow
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Generation and evaluation of an artificial optical signal based on X-ray measurements for bubble characterization in fluidized beds with vertical internals Schillinger, F.; Schildhauer, TJ; Maurer, S.; ...
Acknowledgment This research project is financially supported by the Swiss Innovation Agency lnnosuisse and is part of the Swiss Competence Center for Energy Research SCCER BIOSWEET. ...
Comparison of bubble rise velocity between optical and X-ray evaluation method If the shape of a bubble does not change between the lower and upper detector array, it is expected that both the X-ray evaluation ...
doi:10.1016/j.ijmultiphaseflow.2018.03.002
fatcat:uywqx3maj5e5bn57ptplcpulda
3D Object Representations for Fine-Grained Categorization
2013
2013 IEEE International Conference on Computer Vision Workshops
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In this paper, we therefore lift two state-of-the-art 2D object representations to 3D, on the level of both local feature appearance and location. ...
their efficacy for estimating 3D geometry from images via ultrawide baseline matching and 3D reconstruction. ...
Both are based on estimating the 3D geometry of an object under consideration (Sect. 3.2), and represent both the appearance of individual local features (Sect. 3.3) and their locations (Sect. 3.4) in ...
doi:10.1109/iccvw.2013.77
dblp:conf/iccvw/Krause0DF13
fatcat:ybpy5geivnbnrhxyq43xw45f2e
Page 256 of SPE Production & Operations Vol. 4, Issue 3
[page]
1989
SPE Production & Operations
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The Internet Archive has digitized a microfilm copy of this work. It may be possible to borrow a copy for reading.
The texture plots appeared finer than they should because partial blockage of the detector cell usually occurred early in counting these samples. ...
Static drain times are often used as a measure of foam performance, even though static properties may have little to do with end use of the foam—i.e., creation of fracture geometry and transport of prop ...
Gaussian and non-Gaussian speckle fluctuations in the diffusing-wave spectroscopy signal of a coarsening foam
2006
Applied Optics
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2005 pre-print arXiv:cond-mat/0511669v1 fatcat:geo6bovzubfznmodgk6wnor34a
However, we find that the Gaussian character breaks down for point-in / point-out backscattering geometries in which the illumination spot size is not sufficiently large in comparison with the size of ...
We find that the electric field is Gaussian for typical experimental geometries equivalent to illumination and detection with a plane wave, both for backscattering and transmission through an optically-thick ...
Their structure is meta-stable, constantly evolving by gas diffusion, bubble rearrangement, drainage, and bubble rupture. ...
doi:10.1364/ao.45.002199
pmid:16607984
fatcat:vndtkbkqdfhyzmswgsgk2dyxqa
Time-resolved fast-neutron radiography of air-water two-phase flows in a rectangular channel by an improved detection system
2015
Review of Scientific Instruments
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The enhanced imaging quality enables an improved prediction of two-phase flow parameters like the instantaneous volumetric gas fraction, bubble size, and bubble velocities. ...
Using the tailored detector and the improved post-processing, significant increase in the image quality and an order of magnitude lower exposure times, down to 3.33 ms, have been achieved with minimized ...
Note that the bubble size and the CM velocity are only taken for bubbles appearing fully inside the FOV. ...
doi:10.1063/1.4926999
pmid:26233413
fatcat:76o6dpb5xzbe3me4tq6p4pkae4
Nuclear Fusion in Collapsing Bubbles—Is It There? An Attempt to Repeat the Observation of Nuclear Emissions from Sonoluminescence
2002
Physical Review Letters
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Using the same cavitation apparatus, a more sophisticated data acquisition system, and a larger scintillator detector, we find no evidence for 2.5-MeV neutron emission correlated with sonoluminescence ...
form collapsing bubbles. ...
We also note the intriguing time dependence seen in the SL detector. We thank R. Varner for help in setting up the data acquisition system, and J. D. Fox and L. Berry for help with the manuscript. ...
doi:10.1103/physrevlett.89.104302
pmid:12225196
fatcat:wvfbqtqdfbbnxkxnzefpbzvcqi
Development and validation of an automated algorithm to evaluate the abundance of bubbles in small bowel capsule endoscopy
2018
Endoscopy International Open
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Conclusion A computed algorithm based on a GLCM detector strategy had high diagnostic performance allowing assessment of the abundance of bubbles in SB-CE still frames. ...
This algorithm could be of interest for clinical use (quality reporting) and for research purposes (objective comparison tool of different preparations). ...
Discussion We selected and validated a computed and comprehensive algorithm, allowing evaluation of the abundance of bubbles in SB-CE still frames, based on GLCM detector strategy. ...
doi:10.1055/a-0573-1044
pmid:29616238
pmcid:PMC5880035
fatcat:cbh5sn7i7vdzhm3efqm4zeff6e
Characterization of 30 ^76Ge enriched Broad Energy Ge detectors for GERDA Phase II
[article]
2019
arXiv
pre-print
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This paper describes the properties and the overall performance of these detectors during operation in vacuum. ...
strength of pulse shape simulation codes. ...
In most of these cases a single 'bubble' was observed, in two detectors even two independent 'bubbles' for the first time. The 'bubbles' appear only at well-defined high voltages. ...
arXiv:1901.06590v1
fatcat:faciv44vjjbiffdoqnetr6sj2y
A Concept for a Scalable 2 kTon Liquid Argon TPC Detector for Astroparticle Physics
[article]
2005
arXiv
pre-print
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This paper describes the results of a study on the general lines, main construction criteria, crucial points, parameters and required preliminary R&D activities for the construction of a LAr (liquid argon ...
Such detectors are crucial for supernova detection, proton decay, LBL neutrino physics and other astroparticle physics applications. ...
If, from one side the spherical shape requires half of the wall stiffness in comparison with the cylindrical one, the latter appears more suitable for the TPC drift geometry and with a more advantageous ...
arXiv:astro-ph/0509410v1
fatcat:62dx5djwwrhs7pmfl4ae3z3y3q
Fluidization dynamics of cohesive Geldart B particles. Part I: X-ray tomography analysis
2019
Chemical Engineering Journal
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X-ray tomography was used to reconstruct 3D bubbles in a bubbling bed. • The inter-particle cohesive force facilitates the coalescence of bubbles in the bed. • The fluidization fails as the whole bed slugging ...
Acknowledgements This work is supported by National Key R&D Program of China (2017YFB0603300) and National Nature Science Foundation of China (51806036 and 51676042). ...
Both normal bubbles and gas slugs determined the bubble hold-up. At 30 °C, no slugging appears. ...
doi:10.1016/j.cej.2018.11.082
fatcat:nkui7wpppvfyzes6563p2jb2ue
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