SCA '12:
Proceedings of the 2012 ACM SIGGRAPH/Eurographics Symposium on
Computer Animation.
Abstract
We
present a system for generating full-body animations from the
performance on a touch-sensitive tabletop of “finger walking”, where
two fingers are used to pantomime leg movements. A user study was
conducted to explore how users can communicate full-body motion using
their hands, which concluded that finger walking is a naturally-chosen
and comfortable performance method. Based on contact data recorded
during this study, the properties of a variety of performed locomotion
types were analyzed to determine which motion parameters are most
reliable and expressive for the purpose of generating corresponding
full-body animations. Based on this analysis, a compact set of motion
features was developed for classifying the locomotion type of a finger
performance. A prototype interactive animation system was implemented
to generate full-body animations of a known locomotion type from finger
walking by estimating the motion path of a finger performance, and
editing the path of a corresponding animation to match. The
classification accuracy and output animation quality of this system was
evaluated in a second user study, demonstrating that satisfying
full-body animations can be reliably generated from finger performances.
