Space browsing interface based on head posture information

We propose an interface to browse 3D virtual space in a human scale virtual environment using a scrolling technique. Our method is based on head posture estimation by processing the image of an oval marker. Because the marker is attached to a cap, the user can wear the marker easily and naturally. Our method feels natural because the direction of scrolling is consistent with the user's direction of attention. The estimation of the position and direction of the marker is based on image moment features which makes the system robust to noise and allows real-time operation without any special hardware.