BiDi screen: a thin, depth-sensing LCD for 3D interaction using light fields

Authors:
Matthew Hirsch;Douglas Lanman;Henry Holtzman;Ramesh Raskar
Affiliations:
MIT Media Lab;Brown University;MIT Media Lab;MIT Media Lab
Venue:
ACM SIGGRAPH ASIA 2009 Art Gallery & Emerging Technologies: Adaptation
Year:
2009

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Capture and express behavior environment (CEBE) for realizing enculturating human-agent interaction

Culture and computing

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Abstract

An LCD screen is transformed into a BiDi (bidirectional) screen to support 2D multi-touch and walk-up 3D gesture interaction. An image sensor placed a small distance behind an LCD forms a mask-based light-field camera, allowing passive depth estimation. The BiDi screen also supports novel mixed-reality rendering with external light-emitting widgets that light a virtual scene.