Thumb modelling for the generation of sign language

Authors:
Maxime Delorme;Michael Filhol;Annelies Braffort
Affiliations:
LIMSI/CNRS, Orsay CX, France;LIMSI/CNRS, Orsay CX, France;LIMSI/CNRS, Orsay CX, France
Venue:
GW'11 Proceedings of the 9th international conference on Gesture and Sign Language in Human-Computer Interaction and Embodied Communication
Year:
2011

Citing 3
Cited 0

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Abstract

We present a simple kinematic model of the thumb for the animation of virtual characters. The animation is made through a purely kinematic approach, thus requires very precise limitations on the rotations of the thumb to be realistic. The thumb is made opposable thanks to the addition of two bones simulating the carpo-metacarpal complex. The bones are laid out to build a virtual axis of rotation allowing the thumb to move in the opposed position. The model is then evaluated by generating 22 static hand-shapes of Sign Language and compared to previous work in animation.