Abstract
To realize the mobile scene-touch equipment of for vision-impaired persons, the measurement and presentation method for the system are examined. It is desirable that the system has fewer disturbances to the vision-impaired person, higher portability and lower cost. Then, we consider a system that uses the video camera attached to the person and the vibrator attached to his/her finger. The video camera acquires the front scene and his/her finger simultaneously. The vibrator presents the image contour of the scene near the finger. As to simplify the measurement of the finger position, a marker is also attached to the finger. In this paper, the measurement precision was examined for various markers. The result showed that the three-colored marker had the best performance in the actual environment. Next, the touch system was confirmed to he used effectively. In addition, a method is presented to obtain the distance to the marker by using the image size of the marker. The system can be expanded to the three-dimensional pointing device.