Development of an affordable system for 2D kinematics and dynamics analysis of human gait
Mahyuddin A.I.a, Mihradi S.a, Dirgantara T.a, Sukmajaya A.a, Juliyad N.a, Purba U.a
a Mechanical Design Research Group, Faculty of Mechanical and Aerospace Engineering, Institut Teknologi Bandung, Indonesia
Abstract
Development of a low-cost, yet reliable, system for 2D gait analysis is presented in this paper. The system consists of a home video camera with speed of 25 fps, LED markers, PC and a technical computing software, which are used for capturing and processing the digital image of markers attached to human body during motion. In the experiments, a person is instructed to walk in a specially arranged measurement area. The recorded images are then digitally processed to detect and track the 2D coordinate of the markers over time. To conduct a dynamics analysis, a mathematical formulation for human motion is constructed where the body is modeled by a system of five rigid bars connected by joints. Finally, a program is developed to plot and calculate the kinematics and dynamics data of human gait, where the markers position data over time, and other variables such as dimensions and weight of the body are used as the input in the program. © 2010 SPIE.
Author keywords
2D coordinates,2D kinematics,Digital image,Dynamics analysis,Human bodies,Human gait,Human motions,Kinematics and dynamics,Mathematical formulation,Position data,Rigid bar,Technical computing
Indexed keywords
Digital image processing,Gait analysis,Tracking markers