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SHAPE algorithm for approximate computation of angular velocities in humeral motion

Rakesh Krishnan, Niclas Bjorsell
2017 2017 IEEE International Instrumentation and Measurement Technology Conference (I2MTC)  
Note that, the approximation error of the angular velocity estimate is on the order of δt 2 .  ...  Importantly, the movement parameters can be interpreted based on the consistent features that constitute a movement of interest.  ... 
doi:10.1109/i2mtc.2017.7969776 dblp:conf/i2mtc/KrishnanB17 fatcat:pjgwyyb7yrff7j6avv5ezkslk4

Nonlinear Model Based Estimation of Rigid-Body Motion Via an Indirect Measurement of an Elastic Appendage

M. Senesh, A. Wolf, O. Gottlieb
2010 Journal of Vibration and Acoustics  
In this paper we develop and implement a nonlinear model based procedure for estimation of rigid body motion via an indirect measurement of an elastic appendage.  ...  We implement a Lagrangian approach to derive a theoretical nonlinear model that consistently incorporates the generalized forces acting on the system.  ...  The linear damping parameter Therefore, the estimated gravity parameter is 121.76 γ = . 4.2 Estimation of Rigid Body Motion i) Coupled system Two sets of slider damping parameters were evaluated.  ... 
doi:10.1115/1.4000465 fatcat:bmhfv53dj5bajch6q7xv5iedlm

Action-Reaction based motion and vibration control of multi-degree-of freedom flexible systems

Islam S. M. Khalil, Asif Sabanovic
2010 2010 11th IEEE International Workshop on Advanced Motion Control (AMC)  
the possibility of performing motion, vibration and force control assignments through measurement taken from the interface point of the actuator with the dynamical system.  ...  This paper demonstrates the feasibility of using the Action-Reaction principle in order to identify and observe dynamical system parameter and states respectively by considering the instantaneous system's  ...  ACKNOWLEDGMENT The authors gratefully acknowledge The Scientific and Technological Research Council of Turkey (TUBITAK) -Project number 108M520 and Yousef Jameel scholarship for the financial support.  ... 
doi:10.1109/amc.2010.5464068 dblp:conf/amc/KhalilS10 fatcat:u3yibt5tejhn7c22b7xuk6h5di

Page 532 of American Society of Civil Engineers. Collected Journals Vol. 127, Issue 5 [page]

2001 American Society of Civil Engineers. Collected Journals  
One approximate way to separate the contribution of the rigid body rocking is to filter it out.  ...  of the instantaneous frequency ver- sus the corresponding amplitude of the envelope of the re- sponse.  ... 

A Bayesian model for estimating observer translation and rotation from optic flow and extra-retinal input

J. A. Saunders, D. C. Niehorster
2010 Journal of Vision  
The model assumes a rigid environment and noise in velocity measurements, and that eye movement provides a probabilistic cue for rotation.  ...  The model can simulate human heading perception across a range of conditions, including: translation with simulated vs. actual eye rotations, environments with various depth structures, and the presence  ...  Acknowledgments This research was supported by a grant from the Hong Kong Research Grants Council (HKU 750209H). We thank two anonymous reviewers for their helpful comments and suggestions.  ... 
doi:10.1167/10.10.7 pmid:20884472 fatcat:emp7bdvogfbxdl372j6auiyw6e

The multiple-frequency Chandler wobble

Cheh PAN
1982 Journal of Physics of the Earth  
The multiple Chandler frequency consists of a fundamental frequency attributable to the Earth's triaxiality, as well as series of small feedback frequencies arising from the Earth's instantaneous inertia  ...  the motion.  ...  The deformed circle represents the polar motion on a rheological Earth and the dashed circle is the polar motion on a rigid Earth; the two models are not consistent.  ... 
doi:10.4294/jpe1952.30.389 fatcat:gqppixfohvfmtlr4b44yf7xrxi

CFD Analysis Incorporating the Influence of Wall Motion: Application to Intracranial Aneurysms [chapter]

Laura Dempere-Marco, Estanislao Oubel, Marcelo Castro, Christopher Putman, Alejandro Frangi, Juan Cebral
2006 Lecture Notes in Computer Science  
flow patterns and understand the effects of deforming walls on the haemodynamic patterns.  ...  A novel method is presented that combines image-based wall motion estimation obtained through non-rigid registration with computational fluid dynamics (CFD) simulations in order to provide realistic intra-aneurysmal  ...  The authors LDM, EO and AF are supported by the Spanish Ministry of Science and Technology through a Juan de la Cierva Research Fellowship (LDM), FPU grant (EO), and a Ramon y Cajal Research Fellowship  ... 
doi:10.1007/11866763_54 fatcat:4kksxchqlfbwxi5f3a5rybolki

Action-reaction based parameters identification and states estimation of flexible systems

Islam S. M. Khalil, Asif Sabanovic
2010 2010 IEEE International Symposium on Industrial Electronics  
This work attempts to identify and estimate flexible system's parameters and states by a simple utilization of the Action-Reaction law of dynamical systems.  ...  The idea is experimentally implemented on a dynamical system with three flexible modes, then it can be extended to more complicated structures with infinite modes.  ...  Acknowledgements The authors gratefully acknowledge The Scientific and Technological Research Council of Turkey (TUBITAK)-Project number 108M520 and Yousef Jameel scholarship for the financial support.  ... 
doi:10.1109/isie.2010.5637217 fatcat:necz2ln3dnenrfywttwt7677se

Direct-from-Video: Unsupervised NRSfM [chapter]

Karel Lebeda, Simon Hadfield, Richard Bowden
2016 Lecture Notes in Computer Science  
In this work we describe a novel approach to online dense non-rigid structure from motion.  ...  The proposed algorithm needs no offline pre-learning and does not assume the modelled object stays rigid at the beginning of the video sequence.  ...  This work was supported by the EPSRC project EP/I011811/ 1: "Learning to Recognise Dynamic Visual Content from Broadcast Footage" and the SNSF Sinergia project "Scalable Multimodal Sign Language Technology  ... 
doi:10.1007/978-3-319-49409-8_50 fatcat:oa265vzfxzhsvicupjja4cwhia

Videographic Determination of Instantaneous Center of Rotation Using a Hinge Joint Model

John H. Hollman, Robert H. Deusinger
1999 Journal of Orthopaedic and Sports Physical Therapy  
Estimated location of the instantaneous centers of rotation (ICR) of the hinge joint model through 120° of rotation.  ...  Transformation of any given set of marker positions in the laboratory reference system to the local reference system consists of one translation (R) and one rotation (a) given by a 2 X 2 direction cosine  ... 
doi:10.2519/jospt.1999.29.8.463 pmid:10444736 fatcat:ax2wy6gp3zhxlhexnvloqzgwnm

Image-Guided Positioning and Tracking

Dan Ruan, Patrick Kupelian, Daniel A. Low
2011 The Cancer Journal  
This article focuses on the monitoring and adaptive response aspect of the problem.  ...  Not intended as an exhaustive exposition, this article focuses on discussing the major issues and development principles for image-guided motion management systems.  ...  of the most recent motion estimate and the timing of the actual geometry.  ... 
doi:10.1097/ppo.0b013e318221ad69 pmid:21610468 fatcat:nbs4jgjysneobfzn5ls7pzmijy

Estimation of composite object and camera image motion

Y. Yacoob, L. Davis
1999 Proceedings of the Seventh IEEE International Conference on Computer Vision  
The performance of the algorithm is demonstrated on several image sequences of rigid and articulated bodies in motion.  ...  The spatiotemporal ow models of the object motion are represented as a set of orthogonal ow bases that are learned using principal component analysis of instantaneous ow measurements from a stationary  ...  We demonstrate the performance of the approach on rigid and articulated bodies in motion.  ... 
doi:10.1109/iccv.1999.791217 dblp:conf/iccv/YacoobD99 fatcat:oge5yryiyfbmflquzdjd6cmkri

Percepts of rigid motion within and across apertures

Maggie Shiffrar, M. Pavel
1991 Journal of Experimental Psychology: Human Perception and Performance  
In the 1st of 2 experiments, Ss consistently perceived the fixed center of rotation for an unmarked line viewed through an aperture as located on the line, regardless of its actual location.  ...  Humans consistently err in their percepts of rotational motion viewed through an aperture. Such errors provide insight into the constraints observers use to interpret retinal images.  ...  (In the position shown, the instantaneous motion of O' is mostly parallel to the edge.  ... 
doi:10.1037//0096-1523.17.3.749 pmid:1834788 fatcat:cbtdcvcmwbgldnvch2gokjhsvi

Percepts of rigid motion within and across apertures

Maggie Shiffrar, M. Pavel
1991 Journal of Experimental Psychology: Human Perception and Performance  
In the 1st of 2 experiments, Ss consistently perceived the fixed center of rotation for an unmarked line viewed through an aperture as located on the line, regardless of its actual location.  ...  Humans consistently err in their percepts of rotational motion viewed through an aperture. Such errors provide insight into the constraints observers use to interpret retinal images.  ...  (In the position shown, the instantaneous motion of O' is mostly parallel to the edge.  ... 
doi:10.1037/0096-1523.17.3.749 fatcat:euosjrecnna7tmd7wewhxiuthi

Dynamic Geometry Registration [article]

Niloy J. Mitra, Simon Floery, Maks Ovsjanikov, Natasha Gelfand, Leonidas Guibas, Helmut Pottmann
2007 Symposium on geometry processing : [proceedings]. Symposium on Geometry Processing  
We add a time coordinate to all the input points based on the ordering of the respective frames and pose the problem of computing the motion of each frame as an estimation of certain kinematic properties  ...  By performing this estimation for each frame as a whole we are able to compute rigid inter-frame motions, and by adapting our method to perform a local analysis of the space-time surface, we extend the  ...  We sincerely thank Andreas Schilling for originally suggesting the idea of iterative normal refinement, and Thibaut Weise from ETH Zurich for providing the bee, coati, and teapot data sequences.  ... 
doi:10.2312/sgp/sgp07/173-182 fatcat:jqarwunz6naqzassmswbpw2l5y
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