Abstract
In this paper, we propose a vision-based method for hand written pattern input and display system that enable a user to input the pattern by handwriting with the white rectangle board on hand and to make it display on the white board utilizing a video projector and two cameras which are installed above the user. This system consists of two cameras and a video projector which are geometrically related by the weak calibration, and projects the handwriting operation result of the user on the white board and the move result of the handwritten pattern compared with movement of the white board. Because homography of the white board captured by both cameras and fundamental matrix between the projector and cameras are only used, distinction of handwriting operation and position at the time of handwriting pattern projection become possible with weak calibration of the camera and the projector, which is easily performed by simple operation. For demonstrating the validity of the proposed system, we show that the user can write pattern on a board with arbitrary pose and position, while the pattern is displayed on the board in real-time.
