Results 31 to 40 of about 4,285,430 (261)
Evaluation of 3D Markerless Motion Capture Accuracy Using OpenPose With Multiple Video Cameras
Frontiers in Sports and Active Living, 2020 There is a need within human movement sciences for a markerless motion capture system, which is easy to use and sufficiently accurate to evaluate motor performance.
Nobuyasu Nakano +9 more
doaj +1 more source
Skeletal Parameter Estimation from Optical Motion Capture Data [PDF]
2005 IEEE Computer Society Conference on Computer Vision and Pattern Recognition (CVPR'05), 2004 In this paper we present an algorithm for automatically estimating a subject’s skeletal structure from optical motion capture data. Our algorithm consists of a series of steps that cluster markers into segment groups, determine the topological connectivity between these groups, and locate the positions of their connecting joints.
Adam G. Kirk +2 more
openaire +10 more sources
A Procedure for Automatically Estimating Model Parameters in Optical Motion Capture [PDF]
Procedings of the British Machine Vision Conference 2002, 2002 Abstract Model-based optical motion capture systems require knowledge of the position of the markers relative to the underlying skeleton, the lengths of the skeleton's limbs, and which limb each marker is attached to. These model parameters are typically assumed and entered into the system manually, although techniques exist for calculating some of ...
Maurice Ringer, Joan Lasenby
openaire +3 more sources
Diagnostics, 2020 Portable inertial measurement units (IMUs) are beginning to be used in human motion analysis. These devices can be useful for the evaluation of spinal mobility in individuals with axial spondyloarthritis (axSpA).
I. Concepción Aranda-Valera +14 more
doaj +1 more source
Validating Knee Varus Alignment Measurements Using Markerless Motion Capture
Geriatrics, 2023 This study aimed to determine the validity of specific knee varus alignment measurement methods. We measured the femorotibial angle (FTA) using radiography and optical motion capture and validated the FTA measurement using markerless motion capture.
Kensuke Todoriki +3 more
doaj +1 more source
Validation of an IMU Suit for Military-Based Tasks
Sensors, 2020 Investigating the effects of load carriage on military soldiers using optical motion capture is challenging. However, inertial measurement units (IMUs) provide a promising alternative.
Matthew P. Mavor +4 more
doaj +1 more source
Mechanical Engineering Journal, 2023 In human motion capture systems, reflective markers attached to the body have been widely used to track motion using optical cameras. However, when the speed of motion increases, because the brightness and angle of view of the camera are limited, and the
Ayane KUSAFUKA +3 more
doaj +1 more source
Multiple Hypothesis Tracking for Automatic Optical Motion Capture [PDF]
, 2002 We present a technique for performing the tracking stage of optical motion capture which retains, at each time frame, multiple marker association hypotheses and estimates of the subject's position. Central to this technique are the equations for calculating the likelihood of a sequence of association hypotheses, which we develop using a Bayesian ...
Maurice Ringer, Joan Lasenby
openaire +2 more sources
Analysis of Kinematics of Flapping Wing UAV Using OptiTrack Systems
Aerospace, 2016 An analysis of the kinematics of a flapping membrane wing using experimental kinematic data is presented. This motion capture technique tracks the positon of the retroreflective marker(s) placed on the left wing of a 1.3-m-wingspan ornithopter.
Matthew Ng Rongfa +2 more
doaj +1 more source
Future Internet, 2021 Using optical motion capture and wearable sensors is a common way to analyze impaired movement in individuals with neurological and musculoskeletal disorders.
Ibsa K. Jalata +4 more
doaj +1 more source