INFORMATION SCIENCE

Modeling of complex-coordinated purposeful movement of an athlete: problems and solutions

M. A. Kirkor, A. E. Pokatilov, A. M. Gal'mak, Yu. V. Voronovich

Mogilev State University of Food Technologies

Abstract: Modern methods of biomechanical analysis of complex coordinated movements of an athlete are analyzed, including a fullscale experiment and the development of mechanical and mathematical models of purposeful movement. It is shown that one of the most difficult and time-consuming stages of the study is to obtain the trajectory positions of the athlete's body when performing the exercise. The features of using “motion capture” technology based on “computer vision” for these purposes are studied. The features of the development of mechanical and mathematical models of motion are shown, taking into account the method of obtaining the coordinates of the biomechanical system (BMS). Another method for obtaining spatial coordinates is proposed: using video shooting with cameras from 1 to 3 or more, with mathematical modeling of motion in spherical and Cartesian coordinates.

Keywords: biomechanical analysis, biomechanical system, computer vision, quaternions, locomotion, modeling, spatial motion, spherical coordinate system.

UDC: 51-73; 531.3; 796.01

Received: 17.09.2020