One-frame delay for dynamic photometric compensation in a projector-camera system

One of the main challenges in a projector-camera system is to be able to project on an arbitrary surface and compensate color changes due to the color of the projection surface. This task becomes dramatically more difficult in case the projection surface changes dynamically. Even a slight displacement of the surface breaks the photometric compensation and visible artifacts may occur. An approach that is able to compensate for a dynamic scene is of great importance since it expands the application range of such a system. In this paper, a method that requires only a single frame in order to adapt its photometric compensation to the new surface is demonstrated. Furthermore, it is compared with another state-of-the-art method that claims one-frame delay compensation. In addition, the complex characterization of a DLP projector is addressed. The results prove that not only our approach outperforms the pre-existing method but also it is robust against challenging surfaces with sharp and saturated color patches, as the ones in a real environment.