Computer graphics processing and selective visual display system – Computer graphics processing – Animation
Patent
1997-03-31
2000-07-11
Zimmerman, Mark K.
Computer graphics processing and selective visual display system
Computer graphics processing
Animation
345474, 345475, G06T 1570
Patent
active
060880422
ABSTRACT:
Recorded motion data is combined with interactive control techniques to manipulate the animation of articulated figures. The methods enable computer animated characters to produce fully interactive goal-directed behaviors, such as bipedal walking, through simultaneous satisfaction of position, alignment, posture, balance, obstacle avoidance, and joint limitation constraints while retaining qualitative characteristics of the original non-interactive motion data. Goal-based motion primitives, called synergies, are used to coordinate sets of joint movements that attempt to satisfy each of the above constraints. Non-interactive motion capture and keyframe data, representing examples of desired character movements, are accommodated in the present animation system in three ways: 1) direct approach--non-interactive motion data used directly to specify desired body posture synergy goals as a function of time, 2) hybrid approach--non-interactive motion data and program control commands blended to specify elements of desired position, alignment and/or balance synergy goals as a function of time, and 3) template approach--non-interactive motion data used to auto-tune adjustable parameters, enabling program control commands to generate fully interactive movements that qualitatively resemble the non-interactive motion data. The disclosed methods allow libraries of pre-configured goal-directed behaviors, such as reaching, sitting, walking, jumping, etc., to be constructed and used to animate a wide variety of characters.
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Gullapalli Vijaykumar
Handelman David A
Lane Stephen H
Jacobson Allan
Katrix, Inc.
Nguyen Kimbinh T.
Zimmerman Mark K.
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