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LightGuide: Projected Visualizations for Hand Movement Guidance

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Published on May 4, 2012

LightGuide is a system that explores a new approach to
gesture guidance where we project guidance hints directly
on a user's body. These projected hints guide the user in
completing the desired motion with their body part which is
particularly useful for performing movements that require
accuracy and proper technique, such as during exercise or
physical therapy. Our proof-of-concept implementation
consists of a single low-cost depth camera and projector
and we present four novel interaction techniques that are
focused on guiding a user's hand in mid-air. Our
visualizations are designed to incorporate both feedback
and feedforward cues to help guide users through a range of
movements. We quantify the performance of LightGuide in
a user study comparing each of our on-body visualizations
to hand animation videos on a computer display in both
time and accuracy. Exceeding our expectations, participants
performed movements with an average error of 21.6mm,
nearly 85% more accurately than when guided by video.

Paper: http://rsodhi.com/LightGuide.pdf

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