A FEASIBILITY STUDY USING ACTION SPORT CAMERAS FOR 3D MOTION ANALYSIS
Michael Hales, John D. Johnson. Kennesaw State University, Kennesaw, GA.
The purpose of this study was to assess the practicality and validity of using consumer-based action sport cameras (ASC) for three-dimensional motion analysis. Three different tests were conducted under two different data collection settings where research studies are routinely performed. The investigation compared different types and number of cameras, different calibration protocols, and different types of motion analysis systems with different biomechanical models. The mechanical tests evaluated the accuracy (r = .99, p = 0.001) of the motion capture system and the strength of the biomechanical model used to calculate rotational kinematics (M = 69.1, p = 0.001). Results of motion capture system accuracy tests using sport cameras showed that, for both settings, the error between the measured and calculated distances between markers was less than 1mm and 1 degree for marker separations which ranged from 52mm to 228mm. Finally, errors across settings (indoor vs outdoor) for single joint rotations and for combined rotations at the shoulder and elbow were less than 1 degree, respectively. These results demonstrate that system accuracy and reliability can be obtained allowing the collection of comparable data across different motion analysis settings with varying configurations and equipment. This assessment was particularly important when considering budget, portability, without sacrificing accuracy.
Hales, M and Johnson, JD
"A FEASIBILITY STUDY USING ACTION SPORT CAMERAS FOR 3D MOTION ANALYSIS,"
International Journal of Exercise Science: Conference Proceedings: Vol. 16:
2, Article 214.
Available at: https://digitalcommons.wku.edu/ijesab/vol16/iss2/214