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Visualization Space: A Testbed for Deviceless Multimodal User Interface

The Visualization Space ("VizSpace") is a visual computing system created as a testbed for deviceless multimodal user interfaces. Continuous voice recognition and passive machine vision provide two channels of interaction with computer graphics imagery on a wall-sized display. Users gesture (e.g., point) and speak commands to manipulate and navigate through virtual objects and worlds. Voiced commands are combined with several types of gestures-fullbody, deictic, symbolic and iconic- to allow users to interact using only these natural human-to-human communication skills. The system is implemented on a single (high-end) IBM PC, yet provides comfortably interactive rates. It allows for rapid testing of voice/vision multimodal input and rapid prototyping of specific multimodal applications for natural interaction.