1,314 research outputs found
A Survey on Joint Object Detection and Pose Estimation using Monocular Vision
In this survey we present a complete landscape of joint object detection and
pose estimation methods that use monocular vision. Descriptions of traditional
approaches that involve descriptors or models and various estimation methods
have been provided. These descriptors or models include chordiograms,
shape-aware deformable parts model, bag of boundaries, distance transform
templates, natural 3D markers and facet features whereas the estimation methods
include iterative clustering estimation, probabilistic networks and iterative
genetic matching. Hybrid approaches that use handcrafted feature extraction
followed by estimation by deep learning methods have been outlined. We have
investigated and compared, wherever possible, pure deep learning based
approaches (single stage and multi stage) for this problem. Comprehensive
details of the various accuracy measures and metrics have been illustrated. For
the purpose of giving a clear overview, the characteristics of relevant
datasets are discussed. The trends that prevailed from the infancy of this
problem until now have also been highlighted.Comment: Accepted at the International Joint Conference on Computer Vision and
Pattern Recognition (CCVPR) 201
Production of a KK-graviton and a Vector Boson in ADD Model via Gluon fusion
In the models with large extra-dimensions, we examine the production of a
vector boson (\gamma / Z) in association with the Kaluza-Klein (KK) modes of
the graviton via gluon fusion. At the leading order, the process takes place
through quark-loop box and triangle diagrams and it is ultraviolate finite. We
report the results for the LHC. We also discuss the issues of anomaly and
decoupling of heavy quarks in the amplitude.Comment: 12 pages, 8 figures, some references and a note in the appendix adde
Electromagnetic Form Factors and the Localization of Quark Orbital Angular Momentum in the Proton
A new picture is given of generalized parton distributions probed in
experiments in which the probe scale and the momentum transfer
\DD^{2} are well separated. Application of this picture to the
dependence of the form factors shows that gauge invariant quark
orbital angular momentum can be measured and indeed {\it localized} in the
transverse profile of the proton. A previous prediction that
is generalized to GPD
language. This prediction appears to have been confirmed by recent CEBAF data.Comment: 6 pages, 1 figure. To appear in DIS 2001, 9th International Workshop
on Deep Inelastic Scattering, Bologna, 27 April - 1 May, 200
The Transverse Quark Distribution and Proton Electromagnetic Form Factors in Skew Distribution Formalism
Skew density matrices can be diagonalized to yield probability
interpretation. The power-counting prediction of perturbative QCD is found
consistent with recent CEBAF data on Comment: 4 pages, Presented May 23, 2000 by John Ralston. Published in the
Proceedings of the 7th International Conference on Intersections of Particle
and Nuclear Physics, (May 22-28, 2000 Quebec City), Edited by Z. Parseh and
W. Marciano, (AIP Conference Proceedings Number 549.
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