The following information was submitted:
Transactions: WSEAS TRANSACTIONS ON SYSTEMS
Transactions ID Number: 29-743
Full Name: Ivo Stancic
Position: Ph.D. Candidate
Age: ON
Sex: Male
Address: FESB, Rudjera Boskovica b.b. Split
Country: CROATIA (HRVATSKA)
Tel: 305 879
Tel prefix: 0 385 21
Fax:
E-mail address: istancic@fesb.hr
Other E-mails: istancic@gmail.com
Title of the Paper: Development and Testing of a Device for Human Kinematics Measurement
Authors as they appear in the Paper: Ivo Stancic, Daniela Borojevic, Tamara Supuk
Email addresses of all the authors: istancic@fesb.hr, dborojev@fesb.hr, tada@fesb.hr
Number of paper pages: 10
Abstract: This paper presents a simple, inexpensive, and fast procedure for motion kinematics measurement and analysis. System developed in our laboratory is based on a high speed industrial camera, active LED markers and a PC for handling cameras video stream and data analysis. Active markers used in this work were assembled using small, lightweight and easily available white LEDs. Smaller LEDs allow larger density of markers to be placed on a subject in motion, tracking position and orientation of all segments relevant for motion kinematic analysis. Computer vision algorithm for marker detection and tracking was developed in-house, followed by an algorithm for computing and analyzing kinematics data of human locomotion. Procedures for camera calibration and sub pixel accuracy were also developed and integrated with the system. The accuracy and properties of our system were tested, and results were compared with the existing referent systems presently used in the field. Res!
ults of testing marker – camera properties suggest that the system could support work in larger volumes (distances from camera) and almost perpendicular rotations of marker against camera. This property allows building of a 3D kinematics tracking system with two or more cameras placed at different angels against the subject in setup. Proposed system has a few disadvantages; measurements and results that are representative in only one plane and use of battery powered active markers that could disturb subject during normal gait trial. The major advantage of our system is that it offers acceptable accuracy, high speed (up to 320Hz) and easy upgradeability at much lower price when compared with the other commercially available systems. Further development of our system will include additional cameras for 3D marker tracking and integration with an inertial sensor for full kinematics and kinetic measurement of human movement.
Keywords: biomechanics, computer vision, active markers, human motion kinematics
EXTENSION of the file: .pdf
Special (Invited) Session: Human Kinematics Measuring Using a High Speed Camera and Active Markers
Organizer of the Session: 617-270
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