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PeriTop: extending back-projected tabletops with top-projected peripheral displays

Integrating digital tabletops into homes or desktop environments will give rise to a set of problems emerging from placing everyday objects on interactive tabletops. Chief among them is the arbitrary placement of physical objects that considerably limits the digital working space on the surface of tabletops. In this paper we contribute PeriTop, an interactive back-projected tabletop system which exploit the surface of physical objects and tabletop rims as additional interactive displays to represent and interact with digital objects. This is realized by augmenting the tabletop system with an inexpensive pico projector-depth camera pair. We support the PeriTop approach by depicting several salient use case scenarios aiding users in performing activities on hybrid physical-digital tabletop settings.