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Poster Communications Year : 2022

AIP: Adversarial Interaction Priors for Multi-Agent Physics-based Character Control

Abstract

We address the problem of controlling and simulating interactions between multiple physics-based characters, using short unlabeled motion clips. We propose Adversarial Interaction Priors (AIP), a multi-agents generative adversarial imitation learning (MAGAIL) approach, which extends recent deep reinforcement learning (RL) works aiming at imitating single character example motions. The main contribution of this work is to extend the idea of motion imitation of a single character to interaction imitation between multiple characters. Our method uses a control policy for each character to imitate interactive behaviors provided by short example motion clips, and associates a discriminator for each character, which is trained on actor-specific interactive motion clips. The discriminator returns interaction rewards that measure the similarity between generated behaviors and demonstrated ones in the reference motion clips. The policies and discriminators are trained in a multi-agent adversarial reinforcement learning procedure, to improve the quality of the behaviors generated by each agent. The initial results show the effectiveness of our method on the interactive task of shadowboxing between two fighters.
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Dates and versions

hal-03888489 , version 1 (08-12-2022)

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Mohamed Younes, Ewa Kijak, Richard Kulpa, Simon Malinowski, Franck Multon. AIP: Adversarial Interaction Priors for Multi-Agent Physics-based Character Control. SIGGRAPH Asia 2022 - 15th ACM SIGGRAPH Conference and Exhibition on Computer Graphics and Interactive Techniques in Asia, Dec 2022, Daegu, South Korea. , pp.2, SIGGRAPH Asia 2022 Posters. ⟨10.1145/3550082.3564207⟩. ⟨hal-03888489⟩
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