Motionbeam: a metaphor for character interaction with handheld projectors

We present the MotionBeam metaphor for character interaction with handheld projectors. Our work draws from the tradition of pre-cinema handheld projectors that use direct physical manipulation to control projected imagery. With our prototype system, users interact and control projected characters by moving and gesturing with the handheld projector itself. This creates a unified interaction style where input and output are tied together within a single device. We introduce a set of interaction principles and present prototype applications that provide clear examples of the MotionBeam metaphor in use. Finally we describe observations and insights from a preliminary user study with our system. Author Keywords Interaction metaphor, interaction techniques, handheld projector, pico projector, character, gesture, movement. ACM Classification Keywords H5.m. Information interfaces and presentation (e.g., HCI): Miscellaneous. General Terms Design, Experimentation, Human Factors, Theory.

• Type: Journal
• Year: 2011
• Where: CHI
• Authors: Karl D. D. Willis, Ivan Poupyrev, Takaaki Shiratori
• Keywords: CHI 2011, Human Computer Interaction, Interaction Style, Prototype Applications, Unified Interaction