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human-motion-tracking
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Implementation of optical tracker system for marker-based human motion tracking
, Article 15th IASTED International Conference on Applied Simulation and Modelling, Rhodes, 26 June 2006 through 28 June 2006 ; Volume 2006 , 2006 , Pages 252-257 ; 0889865612 (ISBN); 9780889865617 (ISBN) ; Hoviatalab, M ; Rezaeian, T ; Alizadeh, M ; Bostan, M ; Sharif University of Technology
2006
Abstract
In this paper a complete design of a high speed optical human motion tracking system has been described for biomechanical human motion analysis and animation craft applications. The main core of the image processing unit that is implemented by the differential algorithm procedure and some intelligent and conservative procedures that facilitate the search algorithm have also been proposed and implemented for the processing of human motions tracking images. In the next step an optimized modified direct linear transformation (MDLT) method has been used to reconstruct 3D locations of markers as an input data for animation unit. The low computational cost and the high precision in detecting and...
Human arm motion tracking by inertial/magnetic sensors using unscented Kalman filter and relative motion constraint
, Article Journal of Intelligent and Robotic Systems: Theory and Applications ; Volume 90, Issue 1-2 , May , 2018 , Pages 161-170 ; 09210296 (ISSN) ; Salarieh, H ; Alasty, A ; Abediny, M ; Sharif University of Technology
Springer Netherlands
2018
Abstract
Human motion tracking has many applications in biomedical and industrial services. Low-cost inertial/magnetic sensors are widely used in human motion capture systems to obtain the orientation of the human body segments. In this paper, we have presented a quaternion-based unscented Kalman filter algorithm to fuse inertial/magnetic sensors measurements for tracking human arm movements. In order to have a better estimation of the orientation of the forearm and the upper arm, a constraint equation was developed based on the relative velocity of the elbow joint with respect to the inertial sensors attached to the forearm and the upper arm. Also to compensate for fast body motions, we adapted the...
Markerless human motion tracking using microsoft kinect SDK and inverse kinematics
, Article 12th Asian Control Conference, ASCC 2019, 9 June 2019 through 12 June 2019 ; 2019 , Pages 504-509 ; 9784888983006 (ISBN) ; Behzadipour, S ; Tsujita, T ; Komizunai, S ; Konno, A ; Sharif University of Technology
Institute of Electrical and Electronics Engineers Inc
2019
Abstract
Motion capture systems are used to gauge the kinematic features of the motion in numerous fields of research. Despite superb accuracy performance, the commercial systems are costly and difficult to use. To solve these issues, Kinect has been proposed as a low-priced markerless motion capture sensor, and its accuracy has been assessed using previous motion capture systems. However, in many of these studies, the anatomical joint angles captured using the Kinect are compared to the 3D rotation angles reported by the gold standard motion capture systems. These incompatibilities in the determination of the human joint angles can lead to higher error estimation. To accomplish a valid accuracy...
Human arm motion tracking by inertial/magnetic sensors using unscented kalman filter and relative motion constraint
, Article Journal of Intelligent and Robotic Systems: Theory and Applications ; 2017 , Pages 1-10 ; 09210296 (ISSN) ; Salarieh, H ; Alasty, A ; Abediny, M ; Sharif University of Technology
Abstract
Human motion tracking has many applications in biomedical and industrial services. Low-cost inertial/magnetic sensors are widely used in human motion capture systems to obtain the orientation of the human body segments. In this paper, we have presented a quaternion-based unscented Kalman filter algorithm to fuse inertial/magnetic sensors measurements for tracking human arm movements. In order to have a better estimation of the orientation of the forearm and the upper arm, a constraint equation was developed based on the relative velocity of the elbow joint with respect to the inertial sensors attached to the forearm and the upper arm. Also to compensate for fast body motions, we adapted the...
Design of a marker-based human motion tracking system
, Article Biomedical Signal Processing and Control ; Volume 2, Issue 1 , 2007 , Pages 59-67 ; 17468094 (ISSN) ; Hoviattalab, M ; Rezaeian, T ; Alizadeh, M ; Bostan, M ; Mokhtarzadeh, H ; Sharif University of Technology
2007
Abstract
In this paper a complete design of a high speed optical motion analyzer system has been described. The main core of the image processing unit has been implemented by the differential algorithm procedure. Some intelligent and conservative procedures that facilitate the search algorithm have also been proposed and implemented for the processing of human motions. Moreover, an optimized modified direct linear transformation (MDLT) method has been used to reconstruct 3D markers positions which are used for deriving kinematic characteristics of the motion. Consequently, a set of complete tests using some simple mechanical devices were conducted to verify the system outputs. Considering the system...