A Compensation Method of Inter-reflection for Pattern Projection onto Non-planar Surface

If a pattern is projected to a non-planer screen, the desired view can not be correctly observed due to the influence of inter-reflections. This paper proposes a technique for photometric compensation in consideration of inter-reflections on concave surface. The compensation is accomplished by canceling inter-reflections estimated by the radiosity method. By using our technique, various concave surfaces can be used as a screen, thus the range of application will be expanded. Experimental results show that the influence of inter-reflections is effectively reduced.