Uncertainty-driven Planner for Exploration and Navigation

• URL: http://arxiv.org/abs/2202.11907v1
• Date: Thu, 24 Feb 2022 05:25:31 GMT
• Title: Uncertainty-driven Planner for Exploration and Navigation
• Authors: Georgios Georgakis, Bernadette Bucher, Anton Arapin, Karl Schmeckpeper, Nikolai Matni, Kostas Daniilidis
• Abstract summary: We consider the problems of exploration and point-goal navigation in previously unseen environments. We argue that learning occupancy priors over indoor maps provides significant advantages towards addressing these problems. We present a novel planning framework that first learns to generate occupancy maps beyond the field-of-view of the agent.
• Score: 36.933903274373336
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We consider the problems of exploration and point-goal navigation in previously unseen environments, where the spatial complexity of indoor scenes and partial observability constitute these tasks challenging. We argue that learning occupancy priors over indoor maps provides significant advantages towards addressing these problems. To this end, we present a novel planning framework that first learns to generate occupancy maps beyond the field-of-view of the agent, and second leverages the model uncertainty over the generated areas to formulate path selection policies for each task of interest. For point-goal navigation the policy chooses paths with an upper confidence bound policy for efficient and traversable paths, while for exploration the policy maximizes model uncertainty over candidate paths. We perform experiments in the visually realistic environments of Matterport3D using the Habitat simulator and demonstrate: 1) Improved results on exploration and map quality metrics over competitive methods, and 2) The effectiveness of our planning module when paired with the state-of-the-art DD-PPO method for the point-goal navigation task.

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