1,779 research outputs found
Micro-expression Recognition using Spatiotemporal Texture Map and Motion Magnification
Micro-expressions are short-lived, rapid facial expressions that are exhibited by individuals when they are in high stakes situations. Studying these micro-expressions is important as these cannot be modified by an individual and hence offer us a peek into what the individual is actually feeling and thinking as opposed to what he/she is trying to portray. The spotting and recognition of micro-expressions has applications in the fields of criminal investigation, psychotherapy, education etc. However due to micro-expressions’ short-lived and rapid nature; spotting, recognizing and classifying them is a major challenge. In this paper, we design a hybrid approach for spotting and recognizing micro-expressions by utilizing motion magnification using Eulerian Video Magnification and Spatiotemporal Texture Map (STTM). The validation of this approach was done on the spontaneous micro-expression dataset, CASMEII in comparison with the baseline. This approach achieved an accuracy of 80% viz. an increase by 5% as compared to the existing baseline by utilizing 10-fold cross validation using Support Vector Machines (SVM) with a linear kernel
Gluon Fusion Contribution to Production at Hadron Colliders
We study the associated production of an electroweak vector boson and the
Higgs boson with a jet via gluon-gluon fusion. At the leading order, these
processes occur at one-loop level. The amplitudes of these one-loop processes
are gauge invariant and finite. Therefore, their contributions towards the
corresponding hadronic cross sections and kinematic distributions can be
calculated separately. We present results for the Large Hadron Collider and its
discussed upgrades. We find that the gluon-gluon one-loop process gives
dominant contribution to the production. We observe a destructive
interference effect in the amplitude. We also find that in the
high transverse momentum and central rapidity region, the production
cross section via gluon-gluon fusion becomes comparable to the cross section
contributions coming from quark-quark and quark-gluon channels.Comment: 12 pages, 6 figures, 2 tables. Version to appear in PL
Effect of Anomalous Couplings on the Associated Production of a Single Top Quark and a Higgs Boson at the LHC
We consider the production of a single top quark in association with a Higgs
boson at the LHC. In particular, we compute the cross sections for the
processes , , , , , ,
in the presence of the anomalous and couplings. We
find that the anomalous and couplings can enhance the cross
sections significantly. We also analyze a few signatures and show that, if
these couplings are indeed anomalous, then with enough data, one should be able
to observe the production of the Higgs boson in association with single top
quark.Comment: 15 pages, 4 figures, 5 tables. Typos fixed, reference added. Journal
versio
Gluon fusion contribution to () at the LHC
We have calculated one-loop amplitudes for the production of Higgs boson in
association with two electroweak bosons () via gluon-gluon fusion.
We present preliminary results for the total cross section at 8, 13 and 100 TeV
center-of-mass energies at colliders. We study the interference effect
and, also comment on the effect of new physics in terms of anomalous couplings
of the Higgs boson in these processes.Comment: Proceedings for QCD@Work 201
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