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Implicit Crowds: Optimization Integrator for Robust Crowd Simulation

delete2017-07-20
delete67
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OA
AI
I
Ioannis Karamouzas *
R
Rahul Narain
S
Stephen J. Guy
DOI:10.1145/3072959.3073705delete
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Abstract

Abstract

En 中文
Large multi-agent systems such as crowds involve inter-agent interactions that are typically anticipatory in nature, depending strongly on both the positions and the velocities of agents. We show how the nonlinear, anticipatory forces seen in multi-agent systems can be made compatible with recent work on energy-based formulations in physics-based animation, and propose a simple and effective optimization-based integration scheme for implicit integration of such systems. We apply this approach to crowd simulation by using a state-of-the-art model derived from a recent analysis of human crowd data, and adapting it to our framework. Our approach provides, for the first time, guaranteed collision-free motion while simultaneously maintaining high-quality collective behavior in a way that is insensitive to simulation parameters such as time step size and crowd density. These benefits are demonstrated through simulation results on various challenging scenarios and validation against real-world crowd data.
Keywords:
Crowd simulation
implicit integration
physics-based animation
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Journal

ACM Transactions on Graphics cover
ACM Transactions on Graphics
IF:
9.5
Papers:
4.7K
Citations:
3.6W

Organization

C
Clemson University
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1.3W
Papers: 1.1W
Citations: 1.4W