| 摘要 |
<p>A motion tracking system for a locomotion platform comprises a locomotion platform 10, in particular an omni-directional treadmill, at least one acoustic detection device 20, and means for interpreting the signal from the acoustic detection device to provide input to a virtual reality system. The omni-driectional treadmill comprises a bowl shaped upper surface used with special footwear 90 that generates sound when sliding on the upper surface. Preferably at least two acoustic detection devices, e.g. microphones, which are mounted on or close to the surface of the locomotion platform, are used. The surface of the locomotion platform may have an embossment pattern which varies such that different sounds are made as the footwear slides over it in different ways. In this way the location and direction of movement of the feet of a user can be interpreted. The system is preferably used with a head mounted display to provide a virtual reality environment.</p> |
