US Patent 8952969 Transfer of motion between animated characters

Motion may be transferred between portions of two characters if those portions have a minimum topological similarity. The elements of the topology that are similar are referred to as basic elements. To transfer motion between the source and target characters, the motion associated with the basic elements of the source character is determined. This motion is retargetted to the basic elements of the target character. The retargetted motion is then attached to the basic elements of the target character. As a result, the animation of the basic elements in the topology of the target character effectively animates the target character with motion that is similar to that of the source character.