Results 51 to 60 of about 602,338 (125)

A New Multi-Sensor Fusion Scheme to Improve the Accuracy of Knee Flexion Kinematics for Functional Rehabilitation Movements

Sensors, 2016
Exergames have been proposed as a potential tool to improve the current practice of musculoskeletal rehabilitation. Inertial or optical motion capture sensors are commonly used to track the subject’s movements.
Halim Tannous, Dan Istrate, Aziz Benlarbi-Delai, Julien Sarrazin, Didier Gamet, Marie Christine Ho Ba Tho, Tien Tuan Dao   +6 more
doaj   +1 more source

Body and Head Orientation Estimation From Low-Resolution Point Clouds in Surveillance Settings

IEEE Access
We propose a system that estimates people’s body and head orientations using low-resolution point cloud data from two LiDAR sensors. Our models make accurate estimations in real-world conversation settings where subjects move naturally with ...
Onur N. Tepencelik, Wenchuan Wei, Pamela C. Cosman, Sujit Dey   +3 more
doaj   +1 more source

Use of Earth’s Magnetic Field for Mitigating Gyroscope Errors Regardless of Magnetic Perturbation

Sensors, 2011
Most portable systems like smart-phones are equipped with low cost consumer grade sensors, making them useful as Pedestrian Navigation Systems (PNS).
Muhammad Haris Afzal, Valérie Renaudin, Gérard Lachapelle   +2 more
doaj   +1 more source

Recursive Estimation of Orientation Based on the Bingham Distribution [PDF]

, 2013
Directional estimation is a common problem in many tracking applications. Traditional filters such as the Kalman filter perform poorly because they fail to take the periodic nature of the problem into account.
Gilitschenski, Igor, Hanebeck, Uwe D., Julier, Simon, Kurz, Gerhard   +3 more
core  

Object-Oriented Computation of Sandwich Estimators [PDF]

Journal of Statistical Software, 2006
Sandwich covariance matrix estimators are a popular tool in applied regression modeling for performing inference that is robust to certain types of model misspecification. Suitable implementations are available in the R system for statistical computing for certain model fitting functions only (in particular lm()), but not for other standard regression ...
openaire   +7 more sources

Improved Complementary Filters for Estimation of Heading and Attitude Angles in Accelerated Motion [PDF]

مکانیک هوافضا, 2023
In this paper, a method for improving the performance of Complementary filter in the Attitude and Heading Reference System for estimating the orientation in accelerated movements is presented.
Ali Namvar, Mohammad Mahdi Dehghan, Hossein Nourmohammadi, Mohammadali Alirezapouri   +3 more
doaj  

Effects of repetitive low-acceleration impacts on attitude estimation with micro-electromechanical inertial measurement units

Frontiers in Robotics and AI, 2023
Inertial Measurement Units are present in several applications in aerospace, unmanned vehicle navigation, legged robots, and human motion tracking systems, due to their ability to estimate a body’s acceleration, orientation and angular rate.
Federico Allione, Federico Allione, Juan D. Gamba, Antonios E. Gkikakis, Roy Featherstone, Darwin Caldwell   +5 more
doaj   +1 more source

Multi-Array 5G V2V Relative Positioning: Performance Bounds

, 2019
We study the performance bounds of vehicle-to-vehicle (V2V) relative positioning for vehicles with multiple antenna arrays. The Cram\'{e}r-Rao bound for the estimation of the relative position and the orientation of the Tx vehicle is derived, when angle ...
García, Mario H. Castañeda, Kakkavas, Anastasios, Nossek, Josef A., Stirling-Gallacher, Richard A.   +3 more
core   +1 more source

Human motion tracking based on complementary Kalman filter [PDF]

, 2017
Miniaturized Inertial Measurement Unit (IMU) has been widely used in many motion capturing applications. In order to overcome stability and noise problems of IMU, a lot of efforts have been made to develop appropriate data fusion method to obtain ...
Huang, ZP, Sun, LX, Wang, ZB, Wu, JK, Yang, L, Zhang, ZQ   +5 more
core   +1 more source

Gravitational-Wave Astronomy with Inspiral Signals of Spinning Compact-Object Binaries [PDF]

, 2008
Inspiral signals from binary compact objects (black holes and neutron stars) are primary targets of the ongoing searches by ground-based gravitational-wave interferometers (LIGO, Virgo, GEO-600 and TAMA-300).
A. Stroeer, A. Vecchio, Acernese, C. Röver, Cutler, Gelman, Gilks, I. Mandel, M. V. van der Sluys, N. Christensen, O'Shaughnessy, R. Meyer, Röver, Stroeer, V. Kalogera, V. Raymond, Van den Broeck, Van der Sluys, Willke   +18 more
core   +2 more sources