%0 Journal Article %T Real-Time Joint Coupling of the Spine for Inverse Kinematics %A Raunhardt, Daniel %A Boulic, Ronan %J JVRB - Journal of Virtual Reality and Broadcasting %D 2008 %V 5(2008) %N 11 %@ 1860-2037 %F raunhardt2008 %X In this paper we propose a simple model for the couplingbehavior of the human spine for an inverse kinematicsframework. Our spine model exhibits anatomically correctmotions of the vertebrae of virtual mannequins bycoupling standard swing and revolute joint models. Theadjustement of the joints is made with several simple(in)equality constraints, resulting in a reduction of thesolution space dimensionality for the inverse kinematicssolver. By reducing the solution space dimensionality tofeasible spine shapes, we prevent the inverse kinematicsalgorithm from providing infeasible postures for the spine.In this paper, we exploit how to apply these simple constraints to the human spine by a strict decoupling of the swing and torsion motion of the vertebrae. We demonstrate the validity of our approach on various experiments. %L 004 %K Articulated Structure %K Inverse Kinematics %K Joint Coupling %K Virtual Human Modeling %R 10.20385/1860-2037/5.2008.11 %U http://nbn-resolving.de/urn:nbn:de:0009-6-15886 %U http://dx.doi.org/10.20385/1860-2037/5.2008.11