ABSTRACT

In Spatially Augmented Reality (SAR), the user’s physical environment is augmented with images that are integrated directly into the user’s envi­ ronment, not simply into their visual field. For example, the images could be projected onto real objects using digital light projectors, or embedded directly in the environment with flat panel displays. For the purpose of this paper, we will concentrate on the former. While the approach has certain restrictions, it offers an interesting new method for realizing compelling il­ lusions of virtual objects coexisting with the real world. The images could appear in 2D, aligned on a flat display surface, or they could be 3D and floating above a planar surface, or even 3D and floating above an irregu­ lar surface.