Volumetric calibration and registration of multiple RGBD-sensors into a joint coordinate system

2015 ◽  
Author(s):  
Stephan Beck ◽  
Bernd Froehlich
Keyword(s):  
Coordinate System ◽  
Joint Coordinate System

ISB recommendation on definitions of joint coordinate system of various joints for the reporting of human joint motion—part I: ankle, hip, and spine

2002 ◽  
Vol 35 (4) ◽  
pp. 543-548 ◽  
Author(s):  
Ge Wu ◽  
Sorin Siegler ◽  
Paul Allard ◽  
Chris Kirtley ◽  
Alberto Leardini ◽  
...  
Keyword(s):  
Coordinate System ◽  
Joint Motion ◽  
Joint Coordinate System ◽  
Human Joint

Elastodynamics modeling of 4-SPS/CU parallel mechanism with flexible moving platform based on absolute nodal coordinate formulation

2017 ◽  
Vol 232 (21) ◽  
pp. 3843-3858 ◽  
Author(s):  
Gengxiang Wang
Keyword(s):  
Coordinate System ◽  
Parallel Mechanism ◽  
Absolute Nodal Coordinate Formulation ◽  
Dynamic Performance ◽  
Flexible Body ◽  
Surface Approach ◽  
Absolute Nodal Coordinate ◽  
Cylindrical Joint ◽  
Moving Platform ◽  
Joint Coordinate System

The moving platform of the 4-SPS/CU (S is the spherical joint, P is the prismatic joint, C is the cylindrical joint, U is the universal joint) parallel mechanism is treated as a thin-plate element based on the absolute nodal coordinate formulation due to its physical characteristic. In order to eliminate high-frequency modes caused by the coupling between membrane and bending effects, the elastic mid-surface approach is used to evaluate the elastic force of the flexible moving platform. In order to formulate constraint equations between the flexible body and the rigid body, the tangent frame is introduced to define the joint coordinate system that is rigidly attached to the node at the joint, which is convenient for determining the constant vector in the joint coordinate system. The dynamics model of the parallel mechanism with the flexible moving platform is built based on the equation of motion. The simulation results show that the vibration frequency caused by the flexible body will be increased with the increasing stiffness of the material, and the kinematic trajectory and dynamics performance of the parallel mechanism are affected seriously when the smaller Young’s modulus is used, which illustrates that the effect of the flexible moving platform on the dynamic performance of the parallel mechanism should not be ignored.

Mandibular kinematics represented by a non-orthogonal floating axis joint coordinate system

2003 ◽  
Vol 36 (2) ◽  
pp. 275-281 ◽  
Author(s):  
Joseph K. Leader ◽  
J.Robert Boston ◽  
Richard E. Debski ◽  
Thomas E. Rudy
Keyword(s):  
Coordinate System ◽  
Joint Coordinate System ◽  
Mandibular Kinematics

scholarly journals Concrete use of the joint coordinate system for the quantification of articular rotations in the digital joints of the horse

2000 ◽  
Vol 31 (3) ◽  
pp. 297-311 ◽  
Author(s):  
Christophe Degueurce ◽  
Henry Chateau ◽  
Viviane Pasqui-Boutard ◽  
Philippe Pourcelot ◽  
Fabrice Audigi� ◽  
...  
Keyword(s):  
Coordinate System ◽  
Joint Coordinate System

Development of an Anatomical Wrist Joint Coordinate System to Quantify Motion During Functional Tasks

2014 ◽  
Vol 30 (4) ◽  
pp. 586-593 ◽  
Author(s):  
Howard J. Hillstrom ◽  
Rohit Garg ◽  
Andrew Kraszewski ◽  
Mark Lenhoff ◽  
Timothy Carter ◽  
...  
Keyword(s):  
Coordinate System ◽  
Motion Analysis ◽  
Convergent Validity ◽  
Wrist Joint ◽  
Intraclass Correlation ◽  
Absolute Difference ◽  
Validity And Reliability ◽  
3D Motion ◽  
3D Motion Analysis ◽  
Joint Coordinate System

The purpose of this study was to develop a three-dimensional (3D) motion analysis based anatomical wrist joint coordinate system for measurement of in-vivo wrist kinematics. The convergent validity and reliability of the 3D motion analysis implementation was quantified and compared with manual and electrogoniometry techniques on 10 cadaveric specimens. Fluoroscopic measurements were used as the reference. The 3D motion analysis measurements (mean absolute difference [MAD] = 3.6°) were significantly less different (P < .005) than manual goniometry (MAD = 5.7°) but not (P = .066, power = 0.45) electrogoniometry (MAD = 5.0°) compared with fluoroscopy. The intraclass correlation coefficient (ICC[2,1]) was highest for 3D motion analysis compared with manual and electrogoniometry, suggesting better reliability for this technique. To demonstrate the utility of this new wrist joint coordinate system, normative data from 10 healthy subjects was obtained while throwing a dart.

Application of the Joint Coordinate System to Three-Dimensional Joint Attitude and Movement Representation: A Standardization Proposal

1993 ◽  
Vol 115 (4A) ◽  
pp. 344-349 ◽  
Author(s):  
G. K. Cole ◽  
B. M. Nigg ◽  
J. L. Ronsky ◽  
M. R. Yeadon
Keyword(s):  
Coordinate System ◽  
Three Dimensional ◽  
Axial Rotation ◽  
Distal Segment ◽  
The Body ◽  
Proximal Segment ◽  
Practical Applications ◽  
Flexion Extension ◽  
Joint Coordinate System ◽  
Selection Of

The selection of an appropriate and/or standardized method for representing 3-D joint attitude and motion is a topic of popular debate in the field of biomechanics. The joint coordinate system (JCS) is one method that has seen considerable use in the literature. The JCS consists of an axis fixed in the proximal segment, an axis fixed in the distal segment, and a “floating” axis. There has not been general agreement in the literature on how to select the body fixed axes of the JCS. The purpose of this paper is to propose a single definition of the body fixed axes of the JCS. The two most commonly used sets of body fixed axes are compared and the differences between them quantified. These differences are shown to be relevant in terms of practical applications of the JCS. Argumentation is provided to support a proposal for a standardized selection of body fixed axes of the JCS consisting of the axis eˆ1 embedded in the proximal segment and chosen to represent flexion-extension, the “floating” axis eˆ2 chosen to represent ad-abduction, and the axis eˆ3 embedded in the distal segment and chosen to represent axial rotation of that segment. The algorithms for the JCS are then documented using generalized terminology.

Inverse Kinematics of Push-Up Exercise Using Joint Coordinate System

2014 ◽  
Vol 4 (1) ◽  
pp. 83-91 ◽  
Author(s):  
Marcio de Oliveira Nunes ◽  
Luciano Luporini Menegaldo ◽  
Gustavo Leporace de Oliveira Lomelino Soares ◽  
Alexandre Visintainer Pino ◽  
Marcio Nogueira de Souza
Keyword(s):  
Coordinate System ◽  
Inverse Kinematics ◽  
Joint Coordinate System ◽  
Push Up
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