LookOut: Diverse Multi-Future Prediction and Planning for Self-Driving

• URL: http://arxiv.org/abs/2101.06547v1
• Date: Sat, 16 Jan 2021 23:19:22 GMT
• Title: LookOut: Diverse Multi-Future Prediction and Planning for Self-Driving
• Authors: Alexander Cui, Abbas Sadat, Sergio Casas, Renjie Liao, Raquel Urtasun
• Abstract summary: LookOut is an approach to jointly perceive the environment and predict a diverse set of futures from sensor data. We show that our model demonstrates significantly more diverse and sample-efficient motion forecasting in a large-scale self-driving dataset.
• Score: 139.33800431159446
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Self-driving vehicles need to anticipate a diverse set of future traffic scenarios in order to safely share the road with other traffic participants that may exhibit rare but dangerous driving. In this paper, we present LookOut, an approach to jointly perceive the environment and predict a diverse set of futures from sensor data, estimate their probability, and optimize a contingency plan over these diverse future realizations. In particular, we learn a diverse joint distribution over multi-agent future trajectories in a traffic scene that allows us to cover a wide range of future modes with high sample efficiency while leveraging the expressive power of generative models. Unlike previous work in diverse motion forecasting, our diversity objective explicitly rewards sampling future scenarios that require distinct reactions from the self-driving vehicle for improved safety. Our contingency planner then finds comfortable trajectories that ensure safe reactions to a wide range of future scenarios. Through extensive evaluations, we show that our model demonstrates significantly more diverse and sample-efficient motion forecasting in a large-scale self-driving dataset as well as safer and more comfortable motion plans in long-term closed-loop simulations than current state-of-the-art models.

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