Title: Achieving Consistency in a Combined IK/FK Interface for a Seven Degree-of-Freedom Kinematic Chain
Authors: McDonald, John
Wolfe, Rosalee
Alkoby, Karen
Brzezinski, Jaceck
Carter, Roymieco
Davidson, Mary Jo
Furst, Jacob
Hinkle, Damien
Kroll, Bret
Lancaster, Glenn
Smallwood, Lori
Toro, Jorge
Ougouag, Nedjla
Schnepp, Jerry
Citation: WSCG '2005: Full Papers: The 13-th International Conference in Central Europe on Computer Graphics, Visualization and Computer Vision 2005 in co-operation with EUROGRAPHICS: University of West Bohemia, Plzen, Czech Republic, p. 171-178.
Issue Date: 2005
Publisher: UNION Agency
Document type: konferenční příspěvek
URI: http://wscg.zcu.cz/wscg2005/Papers_2005/Full/!WSCG2005_Full_Proceedings_Final.pdf
ISBN: 80-903100-7-9
Keywords: animace postav;expresivní animace;inverzní kinematika;dopředná kinematika
Keywords in different language: character animation;expressive animation;inverse kinematics;forward kinematics
Abstract: Many applications in computer animation portray the motion of a human arm and torso. Often such applications can benefit from a combination of Inverse (IK) and Forward (FK) Kinematics controls to manipulate the arms of the model. The human arm is a kinematic chain with seven degrees of freedom. The previous analytic solution to this kinematic chain gives highly detailed IK controls, but problems arise when integrating it with FK controls. These problems impede the artistic process when creating expressive animations. This work improves on the previous analytic solution to create a hybrid FK/IK control interface for manipulating the chain, and enables the recalculation of all the parameters necessary for the IK solution. Thus IK and FK controls can interact seamlessly to manipulate the arm. The torso is modeled as a separate kinematic chain, and is integrated with the arm linkages. User tests demonstrate the effectiveness and efficiency of the combined FK/IK control interface.
Rights: © UNION Agency
Appears in Collections:WSCG '2005: Full Papers

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