Tangible Spatial Augmented Reality in Rapid Prototyping: Multiple and dierential tangible object manipulation and interaction

Tangible Interface Objects underpin the interactions between users and a SAR environment. When utilizing SAR for rapid-prototyping work flows, particularly when the subject of the prototyping is a user-input centric design, the role of the Tangible Interface Objects is crucial. A Tangible Interface Object with form or functionality that does not reect that of its real-world counterpart is detrimental to the prototyping workow, where realism in prototypes is highly sought after. Moving from the use of `dumb'input controls with SAR-emulated functionality to `intelligent', state-aware input controlscan greatly aid the rapid-prototyping work flow, and SAR environments generally.This research examines two areas: integrating sensors into input controls to enhance both the self-awareness and the local environmental-awareness of the input control, and increasing state-awareness of traditional input controls such as switches and radial dials. This second area has a focus on input controls which do not require a traditional power source. The results from both these areas demonstrate that `intelligent' Tangible Interface Objects are viable, providing numerous benets to SAR scenes, particularly in the realm of rapid-prototyping