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Solving the orientation-duality problem for a circular feature in motion

D. He, B. Benhabib
1998 IEEE transactions on systems, man and cybernetics. Part A. Systems and humans  
In this paper, several methods are presented for the solution of the orientationduality problem for circular features that are in motion.  ...  This duality problem is normally addressed through the acquisition of a second image in the case of a "static" feature. This solution, however, would not be applicable to "features in motion".  ...  In light of this reasoning, the procedure for solving the orientation-duality problem for a circular feature moving in planar motion can be summarized as follows: Step 1: Acquire the first image of the  ... 
doi:10.1109/3468.686712 fatcat:5v3h32dnwvcvdknwf6dhsmgwla

Solving Orientation Duality for 3D Circular Features using Monocular Vision

Alaa AlZoubi, Tanja K. Kleinhappel, Thomas W. Pike, Bashir Al-Diri, Patrick Dickinson
2015 Proceedings of the 10th International Conference on Computer Vision Theory and Applications  
In this paper we propose two new methods for solving this "orientation duality" problem using a single image.  ...  Methods for estimating the 3D orientation of circular features from a single image result in at least two solutions, of which only one corresponds to the actual orientation of the object.  ...  The proposed methods are effective and solve the orientation-duality problem for both static and object in motion, and it can be used to identify the actual orientation of the circular objects in real  ... 
doi:10.5220/0005262402130219 dblp:conf/visapp/AlZoubiKPAD15 fatcat:kp65bmm2ibayfkcjvo2ctlylxy

Off-center circular orbits in Newton's Principia and a non-Euclidean extension of the Bohlin-Arnold-Vassiliev duality [article]

Maxim Olshanii
2022 arXiv   pre-print
In this article, we identify a potential that generates such circular orbits and explain this phenomenon using a non-Euclidean generalization of the Bohlin-Arnold-Vassiliev duality.  ...  In Book 1, Proposition 7, Problem 2 of his 1687 Philosophiae Naturalis Principia Mathematica, Isaac Newton poses and answers the following question: "Let the orbit of a particle moving in a central force  ...  Jauffred and Bala Sundaram for inspiring this project and Vanja Dunjko and Steven Jackson for useful discussions. This work was supported by NSF grant PHY-1912542.  ... 
arXiv:2207.09606v4 fatcat:sc2atak6mrebjfdldl5zzxwk3m

Rendering with Non-uniform Approximate Concentric Mosaics [chapter]

Jinxiang Chai, Sing Bing Kang, Heung-Yeung Shum
2001 Lecture Notes in Computer Science  
We achieve the tolerance for minor perturbations about the exact circular camera path and variable input sampling by using and analyzing a variant of the Hough space of all captured rays.  ...  The image sequence capture can be achieved by holding a camcorder in position and rotating the body all around.  ...  This is to avoid potential problems in rendering. -All inclusive. All possible oriented rays in the space should be represented, with no exceptions. Note 1. Duality.  ... 
doi:10.1007/3-540-45296-6_7 fatcat:jwnqpoajsraevkt4r6nst6isli

Repetitive motion planning of PA10 robot arm subject to joint physical limits and using LVI-based primal–dual neural network

Yunong Zhang, Xuanjiao Lv, Zhonghua Li, Zhi Yang, Ke Chen
2008 Mechatronics (Oxford)  
(LVI) is presented for the online repetitive motion planning of PA10 robot arm, a kinematically redundant manipulator.  ...  In addition, the physical constraints such as joint limits and joint velocity limits are incorporated into the problem formulation of such a redundancy-resolution scheme.  ...  Before joining Sun Yat-Sen University in 2006, the corresponding author, Yunong Zhang, had been with National University of Ireland, University of Strathclyde, National University of Singapore, Chinese  ... 
doi:10.1016/j.mechatronics.2008.04.005 fatcat:6r4rarkllfdvrarg4qluixlmum

Epipolar-plane image analysis: An approach to determining structure from motion

Robert C. Bolles, H. Harlyn Baker, David H. Marimont
1987 International Journal of Computer Vision  
In our article, we first describe the application of this technique to a simple camera motion, and then show how projective duality is used to extend the analysis to a wider class of camera motions and  ...  For straight-line camera motions, these slices have a simple linear structure that makes them easier to analyze.  ...  Although the linearity induced by duality surprised us initially, it means merely that solving for the location of a scene point is a linear problem if the camera motion is known.  ... 
doi:10.1007/bf00128525 fatcat:lxuh3lucxvdwnkutx54ot7fvf4

Shape: Linear-time camera pose estimation with quadratic error-decay

Alireza Ghasemi, Adam Scholefield, Martin Vetterli
2016 2016 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)  
Our algorithm has linear time-complexity and a squared reconstruction error that decreases at least quadratically, as the number of feature point correspondences increase.  ...  We compare this algorithm with state-of-the-art pose estimation techniques in terms of accuracy and error decay rate.  ...  Triangulation with a linear camera array is equivalent to the PnP problem with collinear feature points and a known camera orientation.  ... 
doi:10.1109/icassp.2016.7471982 dblp:conf/icassp/GhasemiSV16 fatcat:zxsfakqzrrdwtcaizthh7yj3qy

SHAPE: Linear-Time Camera Pose Estimation With Quadratic Error-Decay [article]

Alireza Ghasemi and Adam Scholefield and Martin Vetterli
2016 arXiv   pre-print
Our algorithm has linear time-complexity and a squared reconstruction error that decreases at least quadratically, as the number of feature point correspondences increase.  ...  We compare this algorithm with state-of-the-art pose estimation techniques in terms of accuracy and error decay rate.  ...  Triangulation with a linear camera array is equivalent to the PnP problem with collinear feature points and a known camera orientation.  ... 
arXiv:1602.07535v1 fatcat:idab5ql7vvfe7i7t2zfxnu6b4a

A dual neural network for redundancy resolution of kinematically redundant manipulators subject to joint limits and joint velocity limits

Yunong Zhang, Jun Wang, Youshen Xia
2003 IEEE Transactions on Neural Networks  
In this paper, a recurrent neural network called the dual neural network is proposed for online redundancy resolution of kinematically redundant manipulators.  ...  Physical constraints such as joint limits and joint velocity limits, together with the drift-free criterion as a secondary task, are incorporated into the problem formulation of redundancy resolution.  ...  For comparison, the drift-free inverse kinematics problem is first solved without considering joint physical constraints, as shown in Fig. 4 .  ... 
doi:10.1109/tnn.2003.810607 pmid:18238046 fatcat:7xgb5daombb2ficqaovcjn4xie

Holography for Heavy Quarks and Mesons at Finite Chemical Potential [article]

Carlo Ewerz, Ling Lin, Andreas Samberg, Konrad Schade
2015 arXiv   pre-print
We further investigate the energy loss of a heavy quark moving on a circular orbit as an example of an accelerated motion.  ...  Our results should be relevant for processes involving heavy quarks and their bound states in the quark-gluon plasma, including the case of finite net baryon density.  ...  Acknowledgments The work of K. S. was supported in part by the International Max Planck Research School for Precision Tests of Fundamental Symmetries.  ... 
arXiv:1511.04006v1 fatcat:jcav2dc3irf6tlrdeunvbxtuve

Elliptic shape prior for object 2D-3D pose estimation using circular feature

Cui Li, Derong Chen, Jiulu Gong, Yangyu Wu
2020 EURASIP Journal on Advances in Signal Processing  
using circular feature in a challenging environment.  ...  Many objects in real world have circular feature. It is a difficult task to obtain the 2D-3D pose estimation using circular feature in challenging scenarios.  ...  Acknowledgements The authors thank for the valuable and constructive comments from the editor and reviewers.  ... 
doi:10.1186/s13634-020-00691-6 fatcat:chwqjbfytzfpnf3qtdiis6qe2a

An Introduction to Model-Based Pose Estimation and 3-D Tracking Techniques [chapter]

Christophe Doignon
2007 Scene Reconstruction Pose Estimation and Tracking  
However, it needs the correspondence problem to be solve at least once.  ...  To automatically compute a rigid-body transformation (the pose), it is necessary to match a 3-D model features with part of the visible 2-D image features, a process referred to as the correspondence problem  ...  Some pose estimation problems We begin this section with a short review of wellknown techniques for the pose with feature points and lines in general configuration, so as to orient the discussion toward  ... 
doi:10.5772/4943 fatcat:7naq5u6g6ncxpbpi5vij2p57hy

Development of a planar cable parallel robot for practical application in the educational process

Assylbek Jomartov, Aziz Kamal, Azizbek Abduraimov
2021 Eastern-European Journal of Enterprise Technologies  
This prototype of a planar CDPR is necessary for a better understanding of the design features, structure, kinematics, statics and dynamics of the CDPR by students.  ...  This article presents the design of a prototype of a planar CDPR with four cables for practical use in the educational process.  ...  Acknowledgments This research has been funded by the Science Committee of the Ministry of Education and Science of the Republic of Kazakhstan (Grant No. AP09259339).  ... 
doi:10.15587/1729-4061.2021.237772 fatcat:5hvnca3hircjrj2h37qijjj6wa

Flow onset for a single bubble in yield-stress fluids [article]

Ali Pourzahedi, Emad Chaparian, Ali Roustaei, Ian A. Frigaard
2021 arXiv   pre-print
We use computational methods to determine the minimal yield-stress required in order to hold static a buoyant bubble in a yield-stress liquid.  ...  For a given geometry, bubbles are static for Y > Y_c, which we determine for a range of shapes.  ...  Comparison of AL and FISTA methods Here we illustrate convergence behaviour of the two numerical methods used in this paper (i.e. Augmented Lagrangian and FISTA) for the case of a 2D circular bubble.  ... 
arXiv:2107.07580v2 fatcat:krjqlsbrkrcavgoxzxgjir2iya

Normativity and Mind

Mark H. Bickhard
2004 Contemporary Psychology  
problem solving.  ...  The first is concerned with a computer model of problem solving and learning that the author has been developing for some years, called (in its current version) Connectionistic Learning with Adaptive Rule  ... 
doi:10.1037/004280 fatcat:de2kd2bbuvcongclcsv3nc3jba
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