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Forum

Numerical Simulation of Equilibrium Systems while Viewing 2D/3D Video Clips without Perspective Clues

Yuki Mori¹, Yoshiki Maeda¹, Fumiya Kinoshita^1,2 and Hiroki Takada¹*

¹Department of Human and Artificial Intelligent Systems, Graduate School of Engineering, University of Fukui, 3-9-1 Bunkyo, Fukui 910-8507, Japan
²Institute of Innovation for Future Society, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan
*E-mail address: takada@u-fukui.ac.jp

(Received March 31, 2015; Accepted January 21, 2016)

Abstract. The influence of 3-D images on body sway was investigated using videos of complex sphere movement in space and Smart glass. In addition, perspective clues were added to the videos and the influence on body sway was compared. Significant changes in analytical parameters were noted when the videos without spheres at the 4 corners giving no perspective clue were presented, showing that the standing position control system became unstable while viewing the video without perspective clues, compared to that while viewing them with such clues. On comparison between the 2D and 3D videos, significant changes were noted in the elderly group in the test with open eyes while viewing the video without perspective clues, but no significant change was noted in the young or middle-aged subjects.

Keywords: Body Sway, Stabilograms, Three-Dimensional (3D), Depth Cues, Time-Average Potential