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Spectral Clustering of ROIs for Object Discovery
[chapter]
2011
Lecture Notes in Computer Science
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Object discovery is one of the most important applications of unsupervised learning. ...
The object detector provides rectangular regions of interest (ROIs) as object hypotheses independent of the underlying object class. ...
I want to thank Erik Rodner, advisor of my diploma thesis, for his great support and Michael Kemmler for helpful suggestions. ...
doi:10.1007/978-3-642-23123-0_47
fatcat:7hbbzfaknvdb7pvk4tzcoa3s4a
Page 177 of Astronomy and Astrophysics Vol. 145, Issue 1
[page]
1985
Astronomy and Astrophysics
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Pakull: Discovery of a very bright compact object N88A in the Small Magellanic Cloud 177
covered by Ha, Hf, [Om] and [Sm]. ...
except for the N67 nebula) and our poor spectral resolution. ...
An Attempt to Identify Reproducible High-Density EEG Markers of PTSD during Sleep
2019
Sleep
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To assess reproducibility, we used the first 47 consecutive participants (18 with PTSD) for initial discovery and the remaining 31 participants (13 with PTSD) for replication. ...
Study Objectives We examined electroencephalogram (EEG) spectral power to study abnormalities in regional brain activity in post-traumatic stress disorder (PTSD) during sleep. ...
Department of Defense, or The Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc. This paper has been approved for public release with unlimited distribution. ...
doi:10.1093/sleep/zsz207
pmid:31553047
fatcat:uyzraovmujdfdfi4l23oisaeka
MALDI-MSI Towards Multimodal Imaging: Challenges and Perspectives
2022
Frontiers in Chemistry
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Multimodal imaging is a powerful strategy for combining information from multiple images. It involves several fields in the acquisition, processing and interpretation of images. ...
While MALDI-MS images convey a substantial amount of chemical information, they are not readily informative about the morphological nature of the tissue. ...
All authors listed have made a direct, intellectual and equal contribution to the work and approved it for publication. ...
doi:10.3389/fchem.2022.904688
fatcat:keu6nsp6lzhtdl6qjqc22ohz5u
Spectral analysis assisted photoacoustic imaging for lipid composition differentiation
2017
Photoacoustics
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The approach is based on the classification of spectral curves obtained from the sliding windows along time-of-flight photoacoustic signals via a numerical k-means clustering method. ...
Here, we demonstrate a spectral analysis assisted photoacoustic imaging approach to differentiate and map lipid compositions within an artery wall. ...
density within the bandwidth for ROI 1 and ROI 2 ; (f) PCA result for cholesterol and olive oil within the ROIs. ...
doi:10.1016/j.pacs.2017.05.002
pmid:28649497
pmcid:PMC5472148
fatcat:7iws6l2jsncsvowu4cnnpeva4u
Efficient Method for POI/ROI Discovery Using Flickr Geotagged Photos
2018
ISPRS International Journal of Geo-Information
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Methods developed for the POI/ROI discovery of bottom-up approaches have been widely discussed. ...
The main processing steps, such as point clustering for POI/ROI discovery, usually adopt well-known algorithms or approaches, such as spatial clustering, that focus on a specific property process of either ...
The pattern or relation of objects within a time unit cannot be indicated between clusters, such as seasonal clusters. ...
doi:10.3390/ijgi7030121
fatcat:fl3wzqoqgfagdgsfxiyz2dxsp4
A new flaring high-energyγ-ray source
2013
Astronomy and Astrophysics
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A search for a possible counterpart provides indication that it can be associated with the radio source NVSS J141828+354250 whose optical SDSS colours are typical of a blazar. ...
We report the detection of a new gamma-ray source in the Fermi-LAT sky using a source detection tool based on the Minimal Spanning Tree algorithm. ...
Department of Energy, the National Aeronautics and Space Administration, the Japanese Monbukagakusho, the Max Planck Society, and the Higher Education Funding Council for England. ...
doi:10.1051/0004-6361/201220834
fatcat:sccui7sqe5avllqzmh7qotdtbe
Measuring network's entropy in ADHD: A new approach to investigate neuropsychiatric disorders
2013
NeuroImage
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In addition, to enhance interpretability, we also combined graph spectral clustering to investigate the topological organization of sub-network's modules. ...
In this study, we applied the concept of graph spectral entropy (GSE) to quantify the complexity in the organization of brain networks. ...
Graph Spectral clustering The problem of clustering ROIs (modules) consists of finding a partition of the network (graph) where different sub-networks (clusters) are lowly connected whereas the ROIs within ...
doi:10.1016/j.neuroimage.2013.03.035
pmid:23571416
fatcat:p7qj2q24rzgqhougp3llwuoeeu
Multispectral Fingerprinting Resolves Dynamics of Nanomaterial Trafficking in Primary Endothelial Cells
[article]
2020
bioRxiv
pre-print
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An analysis pipeline was developed to colocalize and deconvolute the fluorescence and Raman spectra of subcellular regions of interest (ROIs), allowing for single-chirality component spectra to be obtained ...
Finally, a spectral clustering analysis was applied to delineate the dynamic sequence of processes into four distinct populations, allowing stages of the intracellular trafficking process to be identified ...
Spectral k-means Clustering Spectral k-means clustering of intracellular ROIs was performed in Matlab using a combination of custom and toolbox functions. ...
doi:10.1101/2020.12.14.422763
fatcat:cnn6b7pmcjdwfnlclseqkfggie
Towards an operative use of remote sensing for exploring the past using satellite data: The case study of Hierapolis (Turkey)
2016
Remote Sensing of Environment
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This choice is given by the specificity of archaeological issue, in particular: (i) the subtle features/targets to be identified are partially or totally unknown and characterized by a very small spectral ...
This paper is focused on the presentation and discussion of an object oriented approach, applied to the Hierapolis (Turkey) site, to automatically detect the subtle features linked to buried archaeological ...
Finally, the form parameter controls the form features of an object by simultaneously balancing the criteria for smoothness of the object border and the criteria for object compactness. ...
doi:10.1016/j.rse.2015.12.016
fatcat:fcg3n45o3jhbfkp5u63vyv7uqm
Very high energy γ-ray emission from RBS 0970
2014
Monthly Notices of the Royal Astronomical Society Letters
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The discovery of RBS 0970 as a VHE emitter, combined with the spectral variability, suggest RBS 0970 to be a good candidate for follow-up observations with ground-based gamma-ray observatories. ...
In this letter I report the Fermi Large Area Telescope (LAT) detection of Very High Energy (VHE; E>100 GeV) gamma-ray emission from the BL Lac object RBS 0970. 5.3 years of LAT observations revealed the ...
This Letter reports the discovery of VHE emission from RBS 0970. Utilizing 5.3 years of Fermi-LAT data, three ULTRA-CLEAN events were discovered to be clustered within 0. • 1 of RBS 0970. ...
doi:10.1093/mnrasl/slu056
fatcat:jrghtogzmbe75l6hbgfkqqgvmu
Group-Wise Consistent Parcellation of Gyri via Adaptive Multi-view Spectral Clustering of Fiber Shapes
[chapter]
2012
Lecture Notes in Computer Science
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Then, we designed and applied a novel multi-view spectral clustering algorithm to group the vertices into groupwise consistent gyral segments across different brains. ...
In-vivo parcellation of the cerebral cortex via non-invasive neuroimaging data has been in active research for years. ...
In this paper, we propose a novel approach for fine-granularity cortical gyrus parcellation via group-wise multi-view spectral clustering of fiber shape patterns. ...
doi:10.1007/978-3-642-33418-4_34
fatcat:a56sxeywgnebbhj3hggmmm42am
Two new high-energy γ-ray blazar candidates
2016
Monthly notices of the Royal Astronomical Society
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2016 pre-print arXiv:1611.05665v1 fatcat:7hiwgea53bbinpr4lhun3epc5e
We searched for archival multi-wavelength data of possible counterparts and found interesting candidates. Both objects are radio sources and their WISE infrared colours are typical of blazars. ...
We discuss the spectral energy distributions of both sources and possible interpretations. ...
We furthermore acknowledge use of archival Fermi-LAT data, of the Final Release 6dFGS archive, and of the SDSS and DSS archives. We are particularly grateful to Mike A. Read of the 6dF team. ...
doi:10.1093/mnras/stw3007
fatcat:gy3dujltwbekzn3tz7vtnf2qnq
Quantitative analysis of individual hepatocyte growth factor receptor clusters in influenza A virus infected human epithelial cells using localization microscopy
2014
Biochimica et Biophysica Acta - Biomembranes
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This article is part of a Special Issue entitled: Viral Membrane Proteins -Channels for Cellular Networking. ...
From the density of HGFR molecule signals in the clusters and the diameter of the clusters, the number of HGFR molecule signals per cluster was estimated to be in the range between 4 and 11 (means 5-6) ...
Christina Ehrhardt, Institute of Molecular Virology, ZMBE University of Münster (Germany) for valuable advice and critical reading of the ms, as well as for the additional help obtained from colleagues ...
doi:10.1016/j.bbamem.2013.12.014
pmid:24374315
fatcat:qhtvaazgprbtrl7m6huisjwyna
Evidence of 100 TeV γ-ray emission from HESS J1702-420: A new PeVatron candidate
[article]
2021
arXiv
pre-print
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This new object has a power-law spectral slope < 2 and a gamma-ray spectrum that, extending with no sign of curvature up to 100 TeV, makes it an excellent candidate site for the presence of PeV-energy ...
This discovery brings new information to the ongoing debate on the nature of the unidentified source HESSJ1702-420, one of the most compelling PeVatron candidates in the gamma-ray sky, and on the origin ...
Acknowledgements: The support of the Namibian authorities and of the University of Namibia in facilitating the construction and operation of H.E.S.S. is gratefully acknowledged, as is the support by the ...
arXiv:2108.02989v1
fatcat:rua4p4vk3feb3oq3voszwqygw4
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