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Vol. 161, Issue 12, December 2013, pp. 59-66




Virtual Interaction System Based on Optical Capture
1 Peng CHEN, 2 Xiaoyang ZHOU, 3 Jianguang LI, 1 Peijun WANG

1 School of Mechanical Engineering, Southwest Jiaotong University, 610031, P.R.China

2 Schaeffler Holding (China) Co., Ltd, Taicang, 215400, P. R. China

3 School of Mechatronics Engineering, Harbin Institute of Technology, 150001, P.R.China

1 Tel.: 86-28-66365266, fax: 86-28-66365266
E-mail: chenpeng@home.swjtu.edu.cn


Received: 27 September 2013   /Accepted: 22 November 2013   /Published: 30 December 2013

Digital Sensors and Sensor Sysstems


Abstract: Virtual reality system provides probability and methods for efficient flexible human machine interaction. Since motion capture technology can obtain the motion state in real environment, an interaction system based on optical motion capture system is introduced in this paper. The models of human body are constructed by commercial CAD software. It analyzes movement characteristics of human arm and hand and builds layered structure model for the movement of them. The motion parameter of hand model is also determined. Moreover, motion control is applied to geometric model of human body as well as mapping image from human body's motion to virtual environment is established. Considering on detection precision and efficiency analysis of collision detection algorithm, suitable collision detection methods for this research is selected, and real-time collision detection by means of bounding volume hierarchies is achieved. Furthermore, it studies human hands grasp motion and defines grasp rules of virtual hands for grasp motion of objects in VR Environment. Finally, development and test of virtual interaction system are accomplished. Various motions, such as grasping, moving and releasing operations are demonstrated in the virtual interaction system for the aiming tasks.


Keywords: Virtual reality, Motion capture, Motion control, Collision detection, Virtual interaction.


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