Spatially scaled motion-reproduction control using modified motion data

Modifying data of audio and visual information makes sound from speaker or display size larger or smaller. However, motion data has a different characteristic from audio and visual data in that it is a bilateral information. When the movement of motion data is scaled, it is affected by reaction force from environments. In this paper, the spatially scaled motion data is handled. In the conventional method of motion-copying system, the stored motion is reproduced only when environmental conditions of stored and reproduced phases are same. So, when a motion data is modified, the movement of motion data is changed and reaction force from environments is also changed. Therefore, the change of the different environmental condition affects the control system and the desired modified motion is not reproduced. In this paper, the scaled motion-reproduction control using spatially scaled motion data based on position-based motion-copying system is proposed. The validity of the proposed method is verified by simulations and experiments and the proposed method is effective for size-free motion reproduction and data volume reduction.