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Recording muscle tendon junction displacements during movement, allows separate investigation of the muscle and tendon behaviour, respectively. In order to provide a fully-automatic tracking method, we employ a novel deep learning approach…

Quantitative Methods · Quantitative Biology 2020-09-09 Christoph Leitner , Robert Jarolim , Andreas Konrad , Annika Kruse , Markus Tilp , Jörg Schröttner , Christian Baumgartner

The estimation of the motor torque and friction parameters are crucial for implementing an efficient low level joint torque control. In a set of coupled joints, the actuators torques are mapped to the output joint torques through a coupling…

Robotics · Computer Science 2019-06-13 Nuno Guedelha , Silvio Traversaro , Daniele Pucci

Injuries to the lower extremity joints are often debilitating, particularly for professional athletes. Understanding the onset of stressful conditions on these joints is therefore important in order to ensure prevention of injuries as well…

Statistics Theory · Mathematics 2024-04-25 Patrick Bastian , Rupsa Basu , Holger Dette

Magnetic Resonance Imaging allows high resolution data acquisition with the downside of motion sensitivity due to relatively long acquisition times. Even during the acquisition of a single 2D slice, motion can severely corrupt the image.…

Numerical Analysis · Mathematics 2024-04-12 Mathias S. Feinler , Bernadette N. Hahn

This study evaluates the agreement of marker-based and markerless (OpenCap) motion capture systems in assessing joint kinematics and kinetics during cycling. Markerless systems, such as OpenCap, offer the advantage of capturing natural…

Computer Vision and Pattern Recognition · Computer Science 2025-05-01 Reza Kakavand , Reza Ahmadi , Atousa Parsaei , W. Brent Edwards , Amin Komeili

This paper presents an approach for detecting unilateral arm paralysis/weakness using kinematic data. Our method employs temporal convolution networks and recurrent neural networks, guided by knowledge distillation, where we use inertial…

Computer Vision and Pattern Recognition · Computer Science 2023-11-29 Kenneth Lai , Mohammed Almekhlafi , Svetlana Yanushkevich

We address the problem of human motion tracking by registering a surface to 3-D data. We propose a method that iteratively computes two things: Maximum likelihood estimates for both the kinematic and free-motion parameters of a kinematic…

Computer Vision and Pattern Recognition · Computer Science 2023-11-21 Radu Horaud , Matti Niskanen , Guillaume Dewaele , Edmond Boyer

Robots applied in therapeutic scenarios, for instance in the therapy of individuals with Autism Spectrum Disorder, are sometimes used for imitation learning activities in which a person needs to repeat motions by the robot. To simplify the…

Robotics · Computer Science 2022-07-26 Natalia Quiroga , Alex Mitrevski , Paul G. Plöger

Inertial motion capture is a promising approach for capturing motion outside the laboratory. However, as one major drawback, most of the current methods require different quantities to be calibrated or computed offline as part of the setup…

Robotics · Computer Science 2025-09-17 Michael Lorenz , Bertram Taetz , Gabriele Bleser-Taetz , Didier Stricker

This paper presents a novel method for 3D human pose and shape estimation from images with sparse views, using joint points and silhouettes, based on a parametric model. Firstly, the parametric model is fitted to the joint points estimated…

Computer Vision and Pattern Recognition · Computer Science 2020-12-14 Zhongguo Li , Anders Heyden , Magnus Oskarsson

We introduce a framework for dynamic evaluation of the fingers movements: flexion, extension, abduction and adduction. This framework estimates angle measurements from joints computed by a hand pose estimation algorithm using a depth sensor…

Computer Vision and Pattern Recognition · Computer Science 2019-03-19 Luciano Walenty Xavier Cejnog , Roberto Marcondes Cesar , Teofilo Emidio de Campos , Valeria Meirelles Carril Elui

This work presents methods for the determination of a humanoid robot's joint velocities and accelerations directly from link-mounted Inertial Measurement Units (IMUs) each containing a three-axis gyroscope and a three-axis accelerometer. No…

Robotics · Computer Science 2016-02-17 Nicholas Rotella , Sean Mason , Stefan Schaal , Ludovic Righetti

Estimating human poses from videos is critical in human-computer interaction. Joints cooperate rather than move independently during human movement. There are both spatial and temporal correlations between joints. Despite the positive…

Computer Vision and Pattern Recognition · Computer Science 2024-05-14 Yonghao Dang , Jianqin Yin , Shaojie Zhang , Jiping Liu , Yanzhu Hu

Designing an exoskeleton to reduce the risk of low-back injury during lifting is challenging. Computational models of the human-robot system coupled with predictive movement simulations can help to simplify this design process. Here, we…

Robotics · Computer Science 2018-03-16 Paul Manns , Manish Sreenivasa , Matthew Millard , Katja Mombaur

We address the problem of unsupervised learning of complex articulated object models from 3D range data. We describe an algorithm whose input is a set of meshes corresponding to different configurations of an articulated object. The…

Computer Vision and Pattern Recognition · Computer Science 2012-07-19 Dragomir Anguelov , Daphne Koller , Hoi-Cheung Pang , Praveen Srinivasan , Sebastian Thrun

We propose a probabilistic filtering method which fuses joint measurements with depth images to yield a precise, real-time estimate of the end-effector pose in the camera frame. This avoids the need for frame transformations when using it…

Robotics · Computer Science 2016-11-28 Cristina Garcia Cifuentes , Jan Issac , Manuel Wüthrich , Stefan Schaal , Jeannette Bohg

Human motion prediction is an increasingly interesting topic in computer vision and robotics. In this paper, we propose a new 2D CNN based network, TrajectoryNet, to predict future poses in the trajectory space. Compared with most existing…

Computer Vision and Pattern Recognition · Computer Science 2020-03-23 Xiaoli Liu , Jianqin Yin , Jin Liu , Pengxiang Ding , Jun Liu , Huaping Liu

Robots operating in domestic environments generally need to interact with articulated objects, such as doors, cabinets, dishwashers or fridges. In this work, we present a novel, probabilistic framework for modeling articulated objects as…

Robotics · Computer Science 2014-06-02 Jürgen Sturm , Cyrill Stachniss , Wolfram Burgard

Quantitative magnetic resonance imaging (qMRI) derives tissue-specific parameters -- such as the apparent transverse relaxation rate R2*, the longitudinal relaxation rate R1 and the magnetisation transfer saturation -- that can be compared…

Image and Video Processing · Electrical Eng. & Systems 2021-05-10 Yaël Balbastre , Mikael Brudfors , Michela Azzarito , Christian Lambert , Martina F. Callaghan , John Ashburner

Human Pose Estimation is a low-level task useful forsurveillance, human action recognition, and scene understandingat large. It also offers promising perspectives for the animationof synthetic characters. For all these applications, and…

Computer Vision and Pattern Recognition · Computer Science 2020-10-15 Lucas Mourot , François Le Clerc , Cédric Thébault , Pierre Hellier