Adaptive Image Projection onto Non-planar Screen Using Projector-Camera Systems

In this paper, we propose a method for projecting images onto non-planar screens by using projector-camera systems eliminating distortion in projected images. In this system, point-to-point correspondences in a projector image and a camera image should be extracted. For finding correspondences, the epipolar geometry between a projector and a camera is used. By using dynamic programming method on epipolar lines, correspondences between projector image and camera image are obtained. Furthermore, in order to achieve faster and more robust matching, the non-planar screen is approximately represented by a B-spline surface. The small number of parameters for the B-spline surface are estimated from corresponding pixels on epipolar lines rapidly. Experimental results show the proposed method works well for projecting images onto non-planar screens.