“Domain of Attraction Expansion for Physics-Based Character Control” by Panne, Borno and Fiume
Conference:
Type:
Title:
- Domain of Attraction Expansion for Physics-Based Character Control
Session/Category Title: Human Motion
Presenter(s)/Author(s):
Moderator(s):
Abstract:
Determining effective control strategies and solutions for high-degree-of-freedom humanoid characters has been a difficult, ongoing problem. A controller is only valid for a subset of the states of the character, known as the domain of attraction (DOA). This article shows how many states that are initially outside the DOA can be brought inside it. Our first contribution is to show how DOA expansion can be performed for a high-dimensional simulated character. Our second contribution is to present an algorithm that efficiently increases the DOA using random trees that provide denser coverage than the trees produced by typical sampling-based motion-planning algorithms. The trees are constructed offline but can be queried fast enough for near-real-time control. We show the effect of DOA expansion on getting up, crouch-to-stand, jumping, and standing-twist controllers. We also show how DOA expansion can be used to connect controllers together.
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