Barehands: implement-free interaction with a wall-mounted display

Authors:
Meredith Ringel;Henry Berg;Yuhui Jin;Terry Winograd
Affiliations:
Brown University, Providence, RI;Stanford University, Stanford, CA;Stanford University, Stanford, CA;Stanford University, Stanford, CA
Venue:
CHI '01 Extended Abstracts on Human Factors in Computing Systems
Year:
2001

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Abstract

We describe Barehands, a free-handed interaction technique, in which the user can control the invocation of system commands and tools on a touch screen by touching it with distinct hand postures. Using behind-screen infrared (IR) illumination and a video camera with an IR filter, we enable a back-projected SMARTBoard (a commercially available, 61 3/8" x 47" touch-sensing display) to identify and respond to several distinct hand postures. Barehands provides a natural, quick, implement-free method of interacting with large, wall-mounted interactive surfaces.