An imitation of 3D projection mapping using augmented reality and shader effects

Nowadays, 3D projection mapping is known for amazing visual performance, and animated content on a structure or building has become very popular for larger brands and corporate campaigns. Because it is limited by the environment and the lighting, the cost can be still high for a person to own a combination of high-lumen projectors and a Multi-projector Seamless Display System. In this paper, we want to pay attention to the visual effect part of Augmented Reality (AR) applications and imitate 3D projection mapping by using the technologies of augmented reality and shader effects. We present an AR framework that uses the shading control technique to make AR scene as realistically as 3D projection mapping as possible. This framework offers people a more convenient way of accessing 3D projection mapping experiences on their mobile devices. The prototypes based on these techniques show the advantages and disadvantages of the technologies while superimposing virtual objects onto a real picture.